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Tonight on
history's greatest mysteries...
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It is perhaps one of
the most famous expeditions
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of the twentieth century.
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Ernest Shackleton's
disastrous mission
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to cross antarctica.
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When Shackleton's ship,
the endurance
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got snared in polar ice,
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the mission became
an all-out fight for survival.
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The ship disappeared
beneath the ice.
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I'm Laurence Fishburn
and tonight's mystery,
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what happened to
Shackleton's lost ship?
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Can we find it?
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What secrets might it hold?
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Now for the first time,
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an expedition is heading
into the frozen waters
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of the antarctic.
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Put it in the water!
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This is pretty much
the holy grail
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because it's so inaccessible.
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Armed with
the latest technology...
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Ready for armed state.
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And a century old log book,
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they'll use sonar
and drone submarines
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00:01:09,870 --> 00:01:13,037
to track down
Shackleton's famous ship.
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But with winter approaching,
there is no margin for error.
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Oh, well,
what the hell is going on?
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This is a start of it, here.
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The hunt for the endurance,
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tonight on
history's greatest mysteries.
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Antarctica,
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the most extreme place on earth.
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Temperatures reach 100 below.
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Wind whips across it at 200 mph.
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This frozen continent
surrounds the south pole.
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It's a vast land, entirely
covered in ice.
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Somewhere in these frozen seas
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lies the holy grail
of shipwrecks,
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the endurance,
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the ship that carried
legendary explorer,
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sir ernest shackleton,
south in 1914.
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Down here, the water is so cold,
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the wooden ship is likely
perfectly preserved.
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But it's so hard to get to
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that no one's ever been able to
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hunt for the wreck.
Until now.
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Flying in from across the globe
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is an international team
of ship hunters,
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00:03:00,614 --> 00:03:03,014
explorers, and scientists.
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00:03:06,520 --> 00:03:08,020
Two years in the planning
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00:03:08,989 --> 00:03:13,125
and over $250 million of
cutting-edge technology
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00:03:13,993 --> 00:03:18,030
make them think
they can pull off a world first.
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If the data that we have for
the wreck site is correct,
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then we'll find it.
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Maritime archaeologist mensun
bound is heading up the search.
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He's got 40 years' experience
excavating shipwrecks,
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00:03:37,084 --> 00:03:39,985
but finding the endurance
is the ultimate challenge.
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The endurance is, to my mind,
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the most famous wreck
of all time.
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You know, she's up there
with the titanic.
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If anybody can find
the endurance,
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it's going to be
this expedition.
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This is the greatest wreck hunt
that there's ever been.
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00:04:04,078 --> 00:04:05,521
The first mission
for the team members
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not arriving by chopper,
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is just getting onto the ship
with their gear.
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Three meters, closing.
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Access from a 100-ft ice cliff
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is not for the faint of heart.
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- Okay, everyone happy?
- Yep.
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Good to go.
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00:04:27,167 --> 00:04:29,446
You'll be in the center like
this, holding here and here,
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-basically
-okay.
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And then the other guys
will surround you.
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It's quite interesting.
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This expedition will face
the same risks and dangers
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00:04:43,817 --> 00:04:46,985
that shackleton did
a century ago.
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But today's team
has come prepared.
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The rov has the tension.
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00:04:53,226 --> 00:04:55,526
- You can release it.
- Got it.
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It's just going to go under.
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00:04:57,463 --> 00:04:58,963
Steve saint amour,
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leads one of the elite teams
of sub-sea explorers.
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00:05:03,937 --> 00:05:04,947
Our job will be to document
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00:05:04,971 --> 00:05:07,052
the condition of the wreck
on the sea floor.
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Based in Maryland,
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his team has found
missing plane wrecks
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00:05:11,879 --> 00:05:15,012
and most famously,
surveyed the titanic.
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00:05:19,620 --> 00:05:21,720
But hunting Shackleton's wreck
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is their most challenging
mission yet.
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00:05:29,096 --> 00:05:32,064
A ship has not been to the
shackleton location primarily
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00:05:32,165 --> 00:05:36,000
due to the ice pack and how
difficult it is to get here.
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00:05:37,805 --> 00:05:40,038
This is the equivalent
of going to mars
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and looking for, you know,
the wreckage of a space craft.
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It's just that remote.
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To help him search,
steve's got a secret weapon.
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A purpose-built,
remotely operated vehicle,
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or rov.
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00:06:02,995 --> 00:06:05,997
This $2 million bot weighs in
at over 6,000 pounds.
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00:06:07,767 --> 00:06:10,701
It's equipped with
deep sea cameras
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00:06:10,803 --> 00:06:14,004
and two articulated
titanium arms.
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Its mission, to dive to the sea
bed and explore the wreck.
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00:06:23,082 --> 00:06:26,418
It can descend to nearly
four miles under the water
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and withstand pressure
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that would crush a human
in an instant.
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Before the ship sets off,
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00:06:34,127 --> 00:06:37,995
steve's team needs to give
their robot a health check.
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00:06:40,100 --> 00:06:42,933
And so one of the things we do
to prepare for the mission
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is go through and double-check
all the connections,
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00:06:44,538 --> 00:06:47,271
and tighten up hardware.
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00:06:48,040 --> 00:06:50,341
Dave o'hara,
from northern ireland
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is steve's pilot.
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Through there.
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In there.
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An ex-british navy engineer,
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00:06:58,985 --> 00:07:01,987
he's been working on robot subs
for 12 years.
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00:07:03,055 --> 00:07:04,755
We've had the
brains of the system out,
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00:07:04,858 --> 00:07:06,858
put it back in and
we'll hook her back up
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00:07:06,927 --> 00:07:08,994
and give it a test again
in a few minutes.
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00:07:11,899 --> 00:07:13,858
For me personally,
it's a bucket list job.
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The shipwreck side of things
have got me inspired
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to come do this for a living,
watching guys find titanic.
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Just for the history behind it,
the story,
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00:07:24,577 --> 00:07:26,877
the human aspect of it.
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00:07:26,980 --> 00:07:28,980
And I think that's the same
with endurance.
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00:07:29,249 --> 00:07:31,728
Okay, guys, just let her be.
I'm gonna start the hydraulics.
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00:07:33,120 --> 00:07:36,353
Dave's confident
he can get the sub 10,000 feet
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00:07:36,456 --> 00:07:37,988
down to the wreck.
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But first they've got
to find it.
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00:07:43,163 --> 00:07:45,997
Fortunately, the team has a big
clue to where it could be.
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00:07:49,702 --> 00:07:51,636
To find the exact spot
to search,
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wreck archaeologist mensun bound
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is investigating nautical charts
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and the ship's original log
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kept meticulously
by Shackleton's captain,
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00:08:01,415 --> 00:08:02,415
frank worsley.
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00:08:04,084 --> 00:08:07,985
These record endurance's
position on the day she sank.
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It gives us the coordinates,
a latitude and a longitude.
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00:08:13,526 --> 00:08:15,526
If we look at the chart,
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here we have it, right here.
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00:08:19,533 --> 00:08:21,199
This is where she sank.
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This is "x marks the spot."
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00:08:25,639 --> 00:08:26,838
using the data,
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00:08:26,939 --> 00:08:30,242
mensun calculates a target
1,200 miles away
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00:08:30,776 --> 00:08:33,010
across the treacherous
weddell sea.
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It's a minefield
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00:08:36,649 --> 00:08:39,985
of giant waves and jagged ice.
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00:08:43,090 --> 00:08:46,991
The weddell sea is
a churning bed of sea ice.
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00:08:47,094 --> 00:08:51,028
This sea ice breaks into pieces
and it floats around
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00:08:51,130 --> 00:08:54,633
and runs into each other,
throwing up pressure ridges,
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00:08:55,168 --> 00:08:59,004
and you never know when it will
turn totally solid again.
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00:09:02,208 --> 00:09:05,009
The expedition is
also in a race against time.
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00:09:06,913 --> 00:09:09,014
The weddell sea is
full of ice year round,
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00:09:09,582 --> 00:09:11,816
but as winter approaches,
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the ocean around the continent
freezes over.
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Impassable sea ice
covering an area
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one-and-a-half times the
size of the united states.
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The team has a short window
to get in and back out
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or they'll get stuck in the ice.
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00:09:35,875 --> 00:09:38,943
Anyone going
into that area with a ship
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is putting their ship
and their crew in jeopardy.
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In 1914,
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two years after the sinking
of the titanic,
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british explorer, sir ernest
shackleton, heads south.
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I believe it is
in our nature to explore,
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reach out into the unknown.
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The only true failure would be
not to explore at all.
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00:10:14,114 --> 00:10:17,014
It's the golden
age of polar exploration.
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Shackleton is full of ambition,
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seeking glory for himself
and his country.
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He was really driven
by the fact that
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it was one of the last few
places on earth
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that hadn't been touched by man
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and he wanted to be one
of the first persons there.
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Antarctica was the last place
to show this sense of adventure.
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It was the last challenge left.
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Shackleton's
aim, to make history
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by crossing the entire
antarctic continent
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from coast to coast
for the first time.
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00:11:00,192 --> 00:11:03,461
One hundred years ago, crossing
antarctica was more difficult
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than us going to the moon today.
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I think it's the nature of man
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to always see something
we haven't seen before,
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whether it's the moon
or the south pole.
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Shackleton and his 27 men,
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they sailed off
what we knew of the world.
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But shackleton
will never even make landfall.
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Here at the end of the earth,
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Shackleton's ship,
the endurance, will sink
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in a disaster that will
capture the world's attention.
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00:11:51,977 --> 00:11:55,113
Fully loaded, the agulhas ii
finally sets off,
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ready to take on
the weddell sea.
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00:12:00,153 --> 00:12:03,321
So much has gone into this
project, so many years of work,
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00:12:03,423 --> 00:12:04,423
so many dreams.
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00:12:05,158 --> 00:12:09,994
It feels like my whole life has
come down to this moment.
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00:12:12,131 --> 00:12:14,999
Now it's time to
put everything to the test.
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After five days at sea,
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00:12:24,677 --> 00:12:25,922
the expedition to find the ship
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00:12:25,946 --> 00:12:28,025
of legendary explorer,
sir ernest shackleton
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00:12:29,515 --> 00:12:30,981
is making good progress.
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Now 1,500 miles
from her starting point
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00:12:38,424 --> 00:12:39,424
at penguin bukta,
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00:12:39,860 --> 00:12:42,994
the crew is zeroing in
on the wreck site.
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00:12:48,100 --> 00:12:50,869
On deck, louisiana native
and former air force engineer,
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00:12:50,971 --> 00:12:54,338
devon james, is part of
a second elite team
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00:12:54,707 --> 00:12:57,008
hunting the 100-year-old wreck.
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00:13:00,113 --> 00:13:03,081
It's his job to look after
a critical set of equipment,
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00:13:03,984 --> 00:13:09,153
two autonomous underwater
vehicles, or auvs.
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00:13:09,755 --> 00:13:11,600
It's basically a drone,
just like an aerial drone,
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00:13:11,625 --> 00:13:13,658
but we use it in the ocean.
210
00:13:13,759 --> 00:13:15,860
So this is used
all over the world
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00:13:15,961 --> 00:13:19,062
to survey the sea floor
without an operator
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00:13:19,533 --> 00:13:21,298
going below the surface.
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00:13:21,400 --> 00:13:23,000
Coming to you.
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00:13:23,102 --> 00:13:25,068
Also working
on the subs is chad bonin.
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00:13:25,672 --> 00:13:28,173
Like devon, he's ex-military.
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00:13:28,542 --> 00:13:30,041
- Forward.
- Roger.
217
00:13:30,143 --> 00:13:33,010
We haven't dealt with ice
conditions like this before.
218
00:13:33,913 --> 00:13:36,648
We were hand picked
to come onto this job,
219
00:13:37,082 --> 00:13:39,984
so there's a lot of pressure
to complete the task.
220
00:13:41,120 --> 00:13:42,532
Despite the
challenges of sending their
221
00:13:42,556 --> 00:13:44,522
auv subs under the ice,
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00:13:44,624 --> 00:13:46,157
chad's got a good attitude.
223
00:13:46,893 --> 00:13:48,104
As long as we're layered up
we're okay.
224
00:13:48,128 --> 00:13:50,995
We're from south louisiana,
it's usually hot weather.
225
00:13:58,871 --> 00:14:01,538
The team knows where to head,
226
00:14:01,640 --> 00:14:04,008
but getting there is tough.
227
00:14:06,980 --> 00:14:10,014
The expedition's hopes
rest on the agulhas ii.
228
00:14:13,552 --> 00:14:14,985
Weighing in at 14,000 tons
229
00:14:16,523 --> 00:14:18,990
and costing $170 million,
230
00:14:21,161 --> 00:14:24,995
this ship is designed to smash
through ice three feet thick.
231
00:14:34,139 --> 00:14:38,009
A double hull of extra thick
steel protects the agulhas ii,
232
00:14:40,547 --> 00:14:41,667
and in the engine room,
233
00:14:41,748 --> 00:14:44,816
second engineer, mark o'reilly
234
00:14:44,918 --> 00:14:46,985
is pushing her four engines
to the limit.
235
00:14:48,621 --> 00:14:51,990
These deliver 12,000 horsepower.
236
00:14:52,959 --> 00:14:54,826
This is one of two prop shafts.
237
00:14:54,927 --> 00:14:56,888
Six thousand horsepower
available on each
238
00:14:57,029 --> 00:15:00,230
and that will give us
enough power to break through
239
00:15:00,900 --> 00:15:03,000
one meter of ice
at seven miles per hour.
240
00:15:15,248 --> 00:15:18,283
The agulhas ii is
built for the worst conditions
241
00:15:18,384 --> 00:15:21,552
on the planet, but
even for this beast,
242
00:15:21,754 --> 00:15:23,988
hitting ice at speed
is bad news.
243
00:15:25,926 --> 00:15:28,125
Captain freddie ligthelm,
is the ice pilot.
244
00:15:28,695 --> 00:15:30,727
Part of the south african crew,
245
00:15:31,030 --> 00:15:34,331
he has 15 years' experience
in the weddell sea.
246
00:15:35,000 --> 00:15:37,936
If we should hit any sea ice
here at 15 knots,
247
00:15:38,038 --> 00:15:41,105
it could possibly cause heavy
damage to the vessel.
248
00:15:41,774 --> 00:15:44,207
So we are continuously
looking out.
249
00:15:45,010 --> 00:15:47,010
The titanic
famously sank in 1912
250
00:15:48,815 --> 00:15:51,182
because it hit an iceberg
at speed.
251
00:15:52,118 --> 00:15:54,985
One wrong move could bring
this ship to the same fate.
252
00:15:56,822 --> 00:15:59,756
But unlike the titanic,
the agulhas ii
253
00:15:59,960 --> 00:16:02,994
has an arsenal of
modern navigational tools.
254
00:16:05,130 --> 00:16:07,698
This is us here
and this is our speed vector
255
00:16:07,801 --> 00:16:09,600
and you can see
that this iceberg
256
00:16:09,668 --> 00:16:12,003
is at a distance of 8.8 miles.
257
00:16:13,974 --> 00:16:17,408
Sometimes you could get
100 targets on the radar
258
00:16:17,509 --> 00:16:19,043
at a 12-mile range,
259
00:16:19,144 --> 00:16:22,013
and you would try to then just
skirt as much as you can.
260
00:16:23,783 --> 00:16:24,615
To reach the wreck site,
261
00:16:24,717 --> 00:16:26,783
the agulhas ii has been sailing
262
00:16:26,885 --> 00:16:28,986
around the northern edge
of the ice pack.
263
00:16:30,155 --> 00:16:32,990
She will only head into the
thicker ice when she has to.
264
00:16:35,128 --> 00:16:39,230
This sea ice is what explorer
sir ernest shackleton faced
265
00:16:39,532 --> 00:16:40,999
more than 100 years ago.
266
00:16:44,236 --> 00:16:48,072
When shackleton took
his ship into the weddell sea,
267
00:16:48,173 --> 00:16:52,009
he knew the tremendous risk
he'd never make it out alive.
268
00:16:55,181 --> 00:16:57,981
Caught on camera
by photographer frank hurley,
269
00:16:59,119 --> 00:17:02,253
the endurance picks her way
through hundreds of miles
270
00:17:02,355 --> 00:17:03,988
of pack ice.
271
00:17:04,857 --> 00:17:07,924
But how could the 144-foot
wooden ship
272
00:17:08,127 --> 00:17:12,997
avoid the fate of the titanic
just two years previously?
273
00:17:16,769 --> 00:17:19,569
Wreck archaeologist,
mensun bound,
274
00:17:19,672 --> 00:17:21,506
is studying the ship's plans.
275
00:17:22,008 --> 00:17:24,575
This is the original design
for the endurance.
276
00:17:24,911 --> 00:17:27,010
She really was
a beautiful, beautiful vessel.
277
00:17:28,914 --> 00:17:30,692
If you look at her bow,
you can see it's got
278
00:17:30,717 --> 00:17:33,017
four huge oaken timbers here.
279
00:17:33,118 --> 00:17:36,988
That's two times more than any
other ship that I know of.
280
00:17:37,990 --> 00:17:39,990
Her bow is over four foot thick.
281
00:17:41,161 --> 00:17:44,996
The keel or spine of the ship
is seven foot of solid oak.
282
00:17:46,833 --> 00:17:48,900
And to stop her being
ripped apart by ice,
283
00:17:49,001 --> 00:17:52,002
her hull is cloaked in a wood
called "greenheart",
284
00:17:54,039 --> 00:17:58,009
so durable and strong
that it's heavier than iron.
285
00:17:59,612 --> 00:18:02,279
It is extraordinarily hard.
286
00:18:03,083 --> 00:18:07,218
It's so hard, you can't even
drive a nail into it.
287
00:18:07,787 --> 00:18:09,030
But this is what
shackleton needed
288
00:18:09,055 --> 00:18:13,090
because it is resistant
to the kind of wear and tear
289
00:18:13,192 --> 00:18:16,461
and abrasion that this hull was
going to have to withstand
290
00:18:16,695 --> 00:18:17,972
once it got into the antarctic.
291
00:18:17,997 --> 00:18:21,465
Shackleton named
his ship endurance
292
00:18:21,567 --> 00:18:26,002
after his family motto, "by
endurance we conquer."
293
00:18:26,972 --> 00:18:29,473
and the endurance
will need all her strength
294
00:18:29,741 --> 00:18:32,009
as she sails
further into the ice.
295
00:18:37,983 --> 00:18:39,461
While the ice makes
getting to the wreck site
296
00:18:39,486 --> 00:18:40,984
a massive challenge,
297
00:18:42,855 --> 00:18:44,855
these frigid waters
are also the reason
298
00:18:44,958 --> 00:18:47,458
Shackleton's wooden ship
is likely preserved
299
00:18:47,559 --> 00:18:48,992
at the bottom of the sea.
300
00:18:50,063 --> 00:18:53,964
In warmer seas, marine
creatures eat wooden ships,
301
00:18:54,067 --> 00:18:58,035
the most destructive,
a mollusk called "shipworm".
302
00:18:59,138 --> 00:19:03,007
Shipworm can be incredibly
destructive to wooden ships.
303
00:19:04,544 --> 00:19:06,042
And they are voracious.
304
00:19:06,145 --> 00:19:08,746
They just eat anything and
everything in no time at all.
305
00:19:09,182 --> 00:19:12,983
They can be up two feet long
and they just eat, eat, eat.
306
00:19:18,157 --> 00:19:20,892
Recent experiments
have revealed that shipworms
307
00:19:20,993 --> 00:19:23,994
can't survive in the freezing
antarctic waters.
308
00:19:25,898 --> 00:19:28,865
Newly-discovered wrecks
from northern canada
309
00:19:28,968 --> 00:19:31,368
prove that icy seas can
preserve wooden ships
310
00:19:31,671 --> 00:19:34,005
even older than the endurance.
311
00:19:37,743 --> 00:19:39,743
But even if it's well preserved,
312
00:19:39,846 --> 00:19:42,246
the endurance
rests 10,000 feet down.
313
00:19:43,115 --> 00:19:47,984
And right now, the sea there
is entirely frozen over.
314
00:19:57,564 --> 00:19:58,895
For 11 days,
315
00:19:58,998 --> 00:20:02,700
the expedition to find
Shackleton's lost wreck
316
00:20:02,801 --> 00:20:04,769
in the frozen waters
of antarctica
317
00:20:04,871 --> 00:20:09,006
has risked raging storms
and ice fields.
318
00:20:18,116 --> 00:20:21,484
Now the crew is beyond
the reach of helicopter rescue.
319
00:20:21,988 --> 00:20:24,107
If something goes wrong,
they're on their own.
320
00:20:27,993 --> 00:20:30,327
They've reached the west side
of the weddell sea,
321
00:20:31,163 --> 00:20:34,131
as close as they can get to
the wreck site in open water.
322
00:20:35,101 --> 00:20:40,003
Beyond their position
is pack ice up to 16 feet thick.
323
00:20:48,013 --> 00:20:52,016
Before they break in,
louisiana boys chad and devon
324
00:20:52,117 --> 00:20:56,287
want to test their auv subs
under a nearby ice floe.
325
00:20:57,123 --> 00:20:59,034
We're going into sea trials
where we're actually going
326
00:20:59,057 --> 00:21:02,393
to launch the auv and
we'll go ahead and release it,
327
00:21:02,494 --> 00:21:05,061
send it underwater.
328
00:21:05,664 --> 00:21:06,730
At the wreck site,
329
00:21:06,833 --> 00:21:09,700
the auvs will dive down
and use sonar
330
00:21:09,801 --> 00:21:12,002
to scan the sea bed
for the wreck.
331
00:21:12,505 --> 00:21:13,903
It may sound simple,
332
00:21:14,007 --> 00:21:18,108
but even testing the auvs
like this is risky.
333
00:21:18,877 --> 00:21:21,011
They've never been
under antarctic ice.
334
00:21:23,048 --> 00:21:25,982
Auv team leader channing thomas
knows the dangers.
335
00:21:27,819 --> 00:21:28,986
There is a lot of pressure.
336
00:21:30,957 --> 00:21:33,156
If this works,
it's going to be extraordinary.
337
00:21:36,095 --> 00:21:38,762
Two years of planning
and tens of millions of dollars
338
00:21:38,865 --> 00:21:43,000
rests, on the auv sub
doing its job right.
339
00:21:44,170 --> 00:21:46,836
We're being extra cautious
before we put it in the water.
340
00:21:46,939 --> 00:21:50,007
Once we launch it,
there's no turning back.
341
00:21:53,145 --> 00:21:55,011
Alright, let's go get
us a successful launch.
342
00:21:56,883 --> 00:21:58,148
Chad is taking no chances.
343
00:21:58,550 --> 00:21:59,983
Ice is a constant threat.
344
00:22:03,690 --> 00:22:06,423
The fast response craft, or frc,
345
00:22:06,858 --> 00:22:08,826
is the only way he can hope
to protect
346
00:22:08,928 --> 00:22:11,461
their multi-million dollar sub
at the surface.
347
00:22:12,097 --> 00:22:16,000
We're on standby in frc
in case anything goes awry.
348
00:22:18,637 --> 00:22:21,005
Alright, crank up hydraulics.
349
00:22:25,144 --> 00:22:28,179
Yeah, we definitely don't see
this in the gulf of mexico.
350
00:22:30,549 --> 00:22:33,851
They'll do a quick test
351
00:22:33,952 --> 00:22:35,992
to make sure all of our
settings are correct,
352
00:22:37,656 --> 00:22:39,557
and then send it under the ice.
353
00:22:39,659 --> 00:22:40,898
This is the start of it here.
354
00:22:40,960 --> 00:22:42,727
- auv is in armed state.
Go ahead, shane.
355
00:22:42,828 --> 00:22:44,528
They put it in armed state.
356
00:22:44,630 --> 00:22:45,996
It's armed and ready to go.
357
00:22:51,069 --> 00:22:53,002
- Auv in the water.
- - like a torpedo.
358
00:22:55,508 --> 00:22:57,007
Alright. Looking good.
359
00:22:57,809 --> 00:22:59,009
All systems are go.
360
00:23:03,615 --> 00:23:05,115
Stay back here and monitor.
361
00:23:05,585 --> 00:23:06,983
Roger that. Ready to dive.
362
00:23:08,755 --> 00:23:10,988
Alright, 30 seconds
till it dives.
363
00:23:25,371 --> 00:23:27,003
Come on, cowboy.
364
00:23:30,143 --> 00:23:33,009
It's not going
down. Start making some waves.
365
00:23:36,682 --> 00:23:37,682
It's very, very flat.
366
00:23:38,183 --> 00:23:40,984
When it's flat calm like this,
it has a tough time diving.
367
00:23:42,954 --> 00:23:44,521
The only way
to make the auv dive
368
00:23:44,624 --> 00:23:46,457
is to make their own waves.
369
00:23:47,125 --> 00:23:49,492
Go create that wake in front of
it as it's traveling.
370
00:23:49,996 --> 00:23:52,115
It's trying to get the water
on top of the bow,
371
00:23:52,198 --> 00:23:56,000
at the forward end of the auv
to get it to start digging in.
372
00:24:01,374 --> 00:24:03,007
Go, baby, go.
373
00:24:09,749 --> 00:24:11,981
Keep coming,
you're making headway.
374
00:24:15,488 --> 00:24:16,987
It's going down, my man.
375
00:24:21,693 --> 00:24:22,992
Good job, fellas.
376
00:24:25,096 --> 00:24:26,997
It took a little
while, but it started diving.
377
00:24:29,836 --> 00:24:32,001
So as of now, we have
a successful dive.
378
00:24:33,905 --> 00:24:36,539
It's a great relief to finally
get it under.
379
00:24:36,642 --> 00:24:39,009
We're on our first mission.
380
00:24:44,182 --> 00:24:46,517
Now it's over to
devon's colleague, blake howard,
381
00:24:46,618 --> 00:24:48,986
to communicate with the auv.
382
00:24:50,756 --> 00:24:51,866
We can pull forward
a little more.
383
00:24:51,891 --> 00:24:54,991
Auv's getting down to
300 meters right now.
384
00:24:56,929 --> 00:24:59,462
Once the auv gets going
on its pre-programmed
385
00:24:59,565 --> 00:25:00,998
four-hour test mission,
386
00:25:01,634 --> 00:25:03,067
blake will have no control.
387
00:25:03,836 --> 00:25:06,002
All he can do is track it
with this,
388
00:25:08,106 --> 00:25:12,009
a high-precision acoustic
positioning system or hipap.
389
00:25:16,848 --> 00:25:18,808
Dropped through the hull
into the sea,
390
00:25:21,787 --> 00:25:24,587
the hipap picks
up acoustic signals
391
00:25:24,690 --> 00:25:25,990
through the water from the sub.
392
00:25:28,794 --> 00:25:30,994
It even pulls in
some curious locals.
393
00:25:38,703 --> 00:25:41,005
While the team tracks
the auv sub,
394
00:25:41,840 --> 00:25:44,708
expedition archaeologist
mensun bound
395
00:25:44,809 --> 00:25:47,010
investigates how
Shackleton's ship
396
00:25:47,113 --> 00:25:51,015
ended up on this side of
the weddell sea a century ago.
397
00:25:51,116 --> 00:25:54,785
Here he is coming down the
coast of the weddell sea,
398
00:25:54,886 --> 00:25:58,021
all the while working his way
south, south.
399
00:25:58,124 --> 00:26:01,325
But as he's going, the ice is
becoming more and more dense
400
00:26:01,426 --> 00:26:02,426
and impenetrable,
401
00:26:02,461 --> 00:26:04,595
until eventually he gets all
the way down here.
402
00:26:04,931 --> 00:26:06,997
And right here is where
he becomes beset.
403
00:26:08,567 --> 00:26:10,800
Just 60 miles
404
00:26:10,903 --> 00:26:13,002
from the south coast of
the weddell sea,
405
00:26:13,105 --> 00:26:16,105
the ice pack freezes solid
around Shackleton's ship.
406
00:26:16,576 --> 00:26:19,009
The endurance is trapped.
407
00:26:28,887 --> 00:26:29,998
The temperature suddenly dropped
408
00:26:30,021 --> 00:26:32,489
from 20 degrees above zero
to 20 degrees below it.
409
00:26:33,025 --> 00:26:36,026
The whole sea froze over
and we froze in with it.
410
00:26:36,127 --> 00:26:38,488
Of course, we had no explosives
to blast our way out.
411
00:26:38,663 --> 00:26:40,998
We just had picks and shovels.
412
00:26:42,233 --> 00:26:46,002
For 40 hours,
his men throw everything at it.
413
00:26:48,807 --> 00:26:51,008
But they can't free her
from the ice.
414
00:26:52,944 --> 00:26:57,013
And at that moment,
Shackleton's heart sank
415
00:26:57,115 --> 00:27:00,183
because he knew, because
it was so late in the season,
416
00:27:00,853 --> 00:27:02,987
that he was frozen
in place for winter.
417
00:27:05,057 --> 00:27:08,224
And in the
six-month long antarctic winter,
418
00:27:08,861 --> 00:27:10,994
just staying alive
is nearly impossible.
419
00:27:12,932 --> 00:27:15,432
Everything
is pushing against you.
420
00:27:15,534 --> 00:27:17,300
It's trying to kill you.
421
00:27:17,670 --> 00:27:19,470
That cold is physically painful.
422
00:27:20,271 --> 00:27:24,974
Any piece of exposed skin, just
a little gap in your clothing,
423
00:27:25,076 --> 00:27:28,011
that's like somebody cutting
your face with a knife.
424
00:27:28,780 --> 00:27:31,015
The wind's unrelenting.
425
00:27:33,051 --> 00:27:35,211
And the snow is driven like
needles into your face.
426
00:27:38,124 --> 00:27:40,490
I was at the
south pole, it was so cold.
427
00:27:40,925 --> 00:27:43,559
I removed my glove
for just about a minute,
428
00:27:43,663 --> 00:27:45,128
maybe a minute and 20 seconds,
429
00:27:45,564 --> 00:27:46,896
and my thumb froze solid.
430
00:27:47,133 --> 00:27:50,366
When you think about shackleton
and his men, out there
431
00:27:50,469 --> 00:27:52,068
in wool and cotton
432
00:27:52,171 --> 00:27:55,005
and things that weren't really
designed for that environment,
433
00:27:58,911 --> 00:28:02,011
it just reminds me how tough
those men were.
434
00:28:05,984 --> 00:28:08,551
The endurance
is completely stuck,
435
00:28:09,087 --> 00:28:12,990
but she's 550 miles from
where she will finally sink.
436
00:28:14,527 --> 00:28:15,992
So how did she get there?
437
00:28:18,998 --> 00:28:21,298
Turns out the endurance
is still on the move...
438
00:28:22,768 --> 00:28:25,001
Because the ice is on the move.
439
00:28:26,971 --> 00:28:28,471
While it may
look like a land mass,
440
00:28:28,574 --> 00:28:31,008
it's floating on water.
441
00:28:32,877 --> 00:28:35,045
That means whatever
the water is doing,
442
00:28:35,146 --> 00:28:38,981
whatever the wind is doing,
that affects that surface.
443
00:28:41,086 --> 00:28:42,986
Strong currents
and winds in the weddell sea
444
00:28:43,088 --> 00:28:46,990
spin the entire ice pack
in a giant clockwise rotation.
445
00:28:49,994 --> 00:28:52,996
For ten months, the endurance
moves with the ice.
446
00:28:58,971 --> 00:29:02,005
This is the route that
the endurance was carried.
447
00:29:03,875 --> 00:29:07,009
We can follow the route
very precisely.
448
00:29:08,513 --> 00:29:10,012
The crew was trapped,
449
00:29:11,016 --> 00:29:13,983
but they had reason to believe
they would escape.
450
00:29:14,753 --> 00:29:16,594
Several years before,
another ship,
451
00:29:16,654 --> 00:29:18,355
a ship called the deutschland,
452
00:29:18,723 --> 00:29:20,483
had also become beset down here.
453
00:29:20,859 --> 00:29:22,537
Because the deutschland
was eventually
454
00:29:22,560 --> 00:29:24,595
released from the ice,
455
00:29:24,696 --> 00:29:26,696
people on the endurance thought
456
00:29:26,798 --> 00:29:28,999
the same thing would
happen to them.
457
00:29:33,172 --> 00:29:35,572
Out on deck in the
early hours of the morning,
458
00:29:35,875 --> 00:29:37,618
the team is waiting
for their auv sub
459
00:29:37,643 --> 00:29:39,009
to return from its test run.
460
00:29:41,513 --> 00:29:42,746
But there's a problem.
461
00:29:42,847 --> 00:29:44,728
I don't know
what the hell's going on.
462
00:29:46,919 --> 00:29:49,452
They've lost all contact
with their brand new
463
00:29:49,555 --> 00:29:50,988
multi-million dollar sub.
464
00:29:58,864 --> 00:30:00,631
Two weeks into the expedition
465
00:30:00,732 --> 00:30:03,066
to find Shackleton's lost ship,
466
00:30:03,169 --> 00:30:06,002
the team is within striking
distance of the wreck site.
467
00:30:08,740 --> 00:30:11,008
But their ship is going nowhere.
468
00:30:13,612 --> 00:30:15,278
Four hours into a test dive,
469
00:30:15,847 --> 00:30:17,914
auv operator blake howard
lost contact
470
00:30:18,017 --> 00:30:21,417
with their multi-million dollar
drone submarine.
471
00:30:22,121 --> 00:30:25,388
Everything started to go well,
we were gaining confidence
472
00:30:25,490 --> 00:30:28,991
and then we lost it.
473
00:30:35,034 --> 00:30:38,000
When we saw that it did not
surface in front of us
474
00:30:39,505 --> 00:30:41,003
or to either side of us,
475
00:30:41,840 --> 00:30:44,007
we figured it had to be
in the ice.
476
00:30:44,943 --> 00:30:47,109
The fear is that the auv came up
477
00:30:47,212 --> 00:30:51,013
underneath the seven-mile wide
ice floe it was diving under.
478
00:30:56,588 --> 00:30:57,988
The team needs to move fast.
479
00:30:59,724 --> 00:31:02,192
The auv has 54 hours of battery.
480
00:31:02,994 --> 00:31:06,063
If the battery dies,
they'll never get it back.
481
00:31:07,031 --> 00:31:10,000
That's a multi-million dollar
loss they can't take.
482
00:31:10,935 --> 00:31:13,016
We're going to search
that area right there.
483
00:31:14,640 --> 00:31:16,772
The expedition throws everyone
484
00:31:16,875 --> 00:31:20,009
and everything they've got
into the hunt.
485
00:31:21,247 --> 00:31:23,012
Boats,
486
00:31:24,383 --> 00:31:25,982
aerial drones,
487
00:31:28,554 --> 00:31:29,987
and the operated vehicles.
488
00:31:31,624 --> 00:31:34,357
The auv has two flashers on it
489
00:31:35,059 --> 00:31:37,994
and the general idea is
to get the rov down deep,
490
00:31:38,096 --> 00:31:41,999
turn off all our lights,
and hopefully see those beacons.
491
00:31:44,936 --> 00:31:45,701
Okay, steve, go into the water.
492
00:31:45,804 --> 00:31:48,005
Bring up all
the hydraulics, please.
493
00:31:53,077 --> 00:31:55,278
A cable tethers
their 6,400 pound robot
494
00:31:55,381 --> 00:31:58,815
to the ship.
495
00:31:58,917 --> 00:32:00,983
It gives pilot dave o'hara
full control.
496
00:32:02,954 --> 00:32:05,989
Okay, steve,
our depth is 30 meters.
497
00:32:09,461 --> 00:32:10,993
We are at 20 meters.
498
00:32:13,464 --> 00:32:14,897
Can't see very much.
499
00:32:15,000 --> 00:32:16,478
Shall we kill the lights
and see what we've got?
500
00:32:16,501 --> 00:32:18,000
Go for it.
501
00:32:19,605 --> 00:32:22,005
Whoa, it's dark.
502
00:32:23,442 --> 00:32:24,442
You know something?
503
00:32:24,476 --> 00:32:27,009
There is no way we're even
gonna see a flasher.
504
00:32:27,112 --> 00:32:29,613
A thick bloom
of algae beneath the ice
505
00:32:29,815 --> 00:32:31,981
has reduced visibility
to almost zero.
506
00:32:43,862 --> 00:32:45,996
We just couldn't see anything.
507
00:32:46,798 --> 00:32:50,933
So we aborted the dive,
come back.
508
00:32:51,036 --> 00:32:53,115
Just keep the vehicle safe,
ready to try again.
509
00:32:56,842 --> 00:32:59,476
Right now I'm very worried.
510
00:32:59,944 --> 00:33:03,579
From day one we recognized
that our nemesis
511
00:33:03,682 --> 00:33:04,858
was going to be the ice pack.
512
00:33:04,883 --> 00:33:07,517
You know, just as
it was Shackleton's,
513
00:33:07,618 --> 00:33:08,818
so was it going to be ours.
514
00:33:09,087 --> 00:33:12,990
And, I'll tell you what,
it's proven to be just that.
515
00:33:14,625 --> 00:33:16,993
It's a setback,
516
00:33:17,863 --> 00:33:19,997
but the team can't afford
to give up.
517
00:33:24,470 --> 00:33:26,002
Sixteen hours later,
518
00:33:29,107 --> 00:33:33,009
blake finally detects a signal
from the missing auv sub.
519
00:33:37,682 --> 00:33:39,548
I started looking at everything
520
00:33:39,651 --> 00:33:42,051
and I saw that 45 minutes ago
521
00:33:42,153 --> 00:33:45,989
there was a hipap hit that made
contact somewhere nearby.
522
00:33:48,160 --> 00:33:51,094
The sub is within
a mile of the of the ship,
523
00:33:51,529 --> 00:33:53,630
somewhere under the ice.
524
00:33:54,032 --> 00:33:55,777
The first ping, when it
actually did come through,
525
00:33:55,800 --> 00:33:58,000
was a great feeling
for everybody.
526
00:33:58,237 --> 00:34:02,372
It's extremely exciting for her
to actually talk back to us,
527
00:34:02,941 --> 00:34:05,008
and it gave us a direction
to head towards.
528
00:34:06,878 --> 00:34:09,045
But with only one acoustic hit,
529
00:34:09,148 --> 00:34:12,983
team leader channing thomas
can't get an accurate fix.
530
00:34:13,851 --> 00:34:15,771
He needs his team
to generate more hits
531
00:34:15,820 --> 00:34:17,987
to zero in on the auv
sub's location.
532
00:34:20,626 --> 00:34:21,735
That means a radical makeover
533
00:34:21,760 --> 00:34:23,994
to their underwater
comms system.
534
00:34:24,996 --> 00:34:27,007
What we need to do is
create a 45-degree angle,
535
00:34:27,032 --> 00:34:31,001
so the hipap is facing
outwards instead of downwards.
536
00:34:40,978 --> 00:34:42,679
Making
the comms system face forward
537
00:34:42,914 --> 00:34:45,047
is something they've
never tried before.
538
00:34:45,550 --> 00:34:46,983
Alright, coming down.
539
00:34:48,253 --> 00:34:49,985
All stop.
540
00:34:51,923 --> 00:34:55,492
We've only got
one hipap on this ship
541
00:34:55,893 --> 00:34:57,438
and although it looks
to be quite robust,
542
00:34:57,463 --> 00:34:59,496
in fact, it's not.
543
00:35:00,132 --> 00:35:03,333
If we take just one knock
from an ice floe, that's it.
544
00:35:03,434 --> 00:35:04,967
It's game over.
545
00:35:05,070 --> 00:35:06,514
You know, the search for the
endurance is finished
546
00:35:06,538 --> 00:35:10,005
before it even begins.
547
00:35:21,987 --> 00:35:23,987
Then the team
picks up a response.
548
00:35:30,161 --> 00:35:33,996
It's almost definitely a hit, so
it's got to be within range.
549
00:35:37,902 --> 00:35:40,402
You know, we know
we're within its range.
550
00:35:40,505 --> 00:35:41,771
Yeah, compared with
551
00:35:41,873 --> 00:35:43,907
- where we were two hours ago.
- Yes, yes.
552
00:35:44,009 --> 00:35:47,010
Yes, sir. Exactly right.
So we're getting there.
553
00:35:51,949 --> 00:35:53,750
After another antarctic night,
554
00:35:53,851 --> 00:35:55,851
the team has picked up
more new signals.
555
00:35:56,021 --> 00:35:57,786
Plotted from three
different locations
556
00:35:57,889 --> 00:36:00,891
to triangulate about
where she's located
557
00:36:00,992 --> 00:36:03,152
and we're figuring she's
about 800 meters ahead.
558
00:36:03,728 --> 00:36:05,762
Now it's not an exact location,
559
00:36:05,864 --> 00:36:07,784
but we've got a pretty good
target zone.
560
00:36:07,965 --> 00:36:10,000
Half a mile might seem close,
561
00:36:11,702 --> 00:36:14,003
but the ship needs
to get closer.
562
00:36:16,875 --> 00:36:19,675
Their robot
tasked with rescuing the sub,
563
00:36:19,777 --> 00:36:21,538
can go four miles straight down,
564
00:36:21,880 --> 00:36:24,014
but only 400 feet sideways
from the ship.
565
00:36:25,617 --> 00:36:27,918
They have to close the gap.
566
00:36:28,152 --> 00:36:32,155
What are we looking at?
Three to seven meters, captain?
567
00:36:32,257 --> 00:36:33,257
Yeah.
568
00:36:37,028 --> 00:36:39,695
Twenty foot
thick ice is well beyond
569
00:36:39,797 --> 00:36:41,998
what their ship's
built to break,
570
00:36:43,068 --> 00:36:46,001
but it's a risk worth taking
to salvage the mission.
571
00:36:57,748 --> 00:37:00,983
The agulhas ii
doesn't ram the ice,
572
00:37:01,552 --> 00:37:02,985
it rides up onto the ice.
573
00:37:04,889 --> 00:37:07,289
And under the weight
of the 14,000 ton ship,
574
00:37:07,759 --> 00:37:09,992
the ice floe
starts to break apart.
575
00:37:15,867 --> 00:37:21,003
The auv is about here,
about 200 meters away.
576
00:37:31,148 --> 00:37:33,650
Each strike
releases colossal ice chunks
577
00:37:33,751 --> 00:37:35,592
bigger than the size of a house.
578
00:37:37,521 --> 00:37:39,054
By the time they're done,
579
00:37:39,157 --> 00:37:42,992
the ship's smashed away 114
football fields worth of ice.
580
00:37:45,963 --> 00:37:48,998
Finally, they can attempt
a second rescue dive.
581
00:37:50,835 --> 00:37:52,635
We're going to launch the rov.
582
00:37:52,838 --> 00:37:53,914
They're going to
go in and locate it
583
00:37:53,938 --> 00:37:56,018
and basically they're
going to drag her out.
584
00:38:03,014 --> 00:38:05,981
But what will
their rov robot find?
585
00:38:12,090 --> 00:38:15,992
Across the ship, all eyes
are glued to the live feed.
586
00:38:23,835 --> 00:38:28,003
Right now
we are at 6.5 meters.
587
00:38:31,976 --> 00:38:33,688
- In under the ice.
- - hey, is that an auv?
588
00:38:33,711 --> 00:38:35,577
That looks like one.
589
00:38:35,681 --> 00:38:38,014
And we've got the auv visual.
590
00:38:38,516 --> 00:38:39,615
Roger.
591
00:38:39,717 --> 00:38:40,961
Tell the bridge we've got a vis.
592
00:38:40,985 --> 00:38:44,987
Finding
the auv is a huge relief.
593
00:38:46,757 --> 00:38:48,590
But now they need
to bring it out.
594
00:38:49,126 --> 00:38:52,161
You can see the end
of the auv with the prop.
595
00:38:52,664 --> 00:38:54,998
So it's definitely in a crack.
596
00:38:58,135 --> 00:39:02,005
Dave has to grab
the auv with the robot arm.
597
00:39:03,208 --> 00:39:06,009
So you're pretty much
gonna have to fly me into it.
598
00:39:12,416 --> 00:39:13,983
Come on, bubba.
599
00:39:16,521 --> 00:39:18,987
Slow, slow, slow, slow.
600
00:39:30,869 --> 00:39:31,601
As soon as we started the move
601
00:39:31,702 --> 00:39:33,670
the fish dropped away below us.
602
00:39:33,771 --> 00:39:35,532
We gotta go chase the fish down.
603
00:39:37,943 --> 00:39:41,010
Getting back in there.
We'll have to try again.
604
00:39:54,960 --> 00:39:57,427
Every missed
attempt pushes the auv
605
00:39:57,528 --> 00:39:59,996
farther out of reach.
606
00:40:02,467 --> 00:40:03,532
And at the surface,
607
00:40:03,635 --> 00:40:06,001
moving ice is threatening
to snag the robot's tether.
608
00:40:09,807 --> 00:40:13,009
The team needs
a new solution and fast.
609
00:40:22,119 --> 00:40:24,753
Four days ago,
the expedition lost contact
610
00:40:24,856 --> 00:40:27,990
with their multi-million
dollar auv sub.
611
00:40:29,693 --> 00:40:31,728
It's a vital tool in their hunt
612
00:40:31,829 --> 00:40:33,996
for Shackleton's
lost antarctic wreck,
613
00:40:35,132 --> 00:40:40,003
but it's now 1,500 feet below
the ship on the sea floor.
614
00:40:40,938 --> 00:40:42,005
Yeah, your heading's good.
615
00:40:43,974 --> 00:40:46,009
Sub-sea explorer
steve saint amour,
616
00:40:46,110 --> 00:40:50,447
is sending the robot
back down to locate the auv sub
617
00:40:50,548 --> 00:40:52,014
and attempt a rescue.
618
00:40:56,121 --> 00:41:01,023
At this depth, the weight of
water pressing down on the auv
619
00:41:01,126 --> 00:41:04,994
is equivalent to two jumbo
jets, one on top of the other.
620
00:41:06,630 --> 00:41:08,998
The robot's got a hook and line,
621
00:41:10,702 --> 00:41:11,568
but pilot dave o'hara is finding
622
00:41:11,670 --> 00:41:14,336
that fishing at this depth...
623
00:41:16,507 --> 00:41:17,547
Is far from easy.
624
00:41:31,489 --> 00:41:32,989
The hook has to hold.
625
00:41:42,501 --> 00:41:43,900
Yeah, copy.
626
00:41:44,001 --> 00:41:46,568
You can probably get
the bridge to start moving
627
00:41:46,670 --> 00:41:49,005
real slowly forward now, mate.
628
00:41:50,141 --> 00:41:53,376
After four days,
the auv is finally in hand
629
00:41:53,478 --> 00:41:55,010
and on the way up.
630
00:41:57,748 --> 00:41:59,559
But as it approaches
the surface,
631
00:41:59,583 --> 00:42:01,217
steve halts the ascent.
632
00:42:01,418 --> 00:42:03,253
Bridge, go ahead.
633
00:42:11,829 --> 00:42:13,596
All the ice floes and bergs
634
00:42:13,697 --> 00:42:15,731
that we've broken off overnight
635
00:42:15,833 --> 00:42:18,001
are all just sweeping in
and around us.
636
00:42:20,038 --> 00:42:24,007
The rov will get caught
in some of these bigger floes.
637
00:42:25,143 --> 00:42:28,244
Ice chunks this
big can weigh 2,000 tons,
638
00:42:28,579 --> 00:42:31,014
more than 13 blue whales.
639
00:42:33,617 --> 00:42:34,884
If one of them hits the cable,
640
00:42:34,985 --> 00:42:37,987
the team could lose their robot
and the auv sub.
641
00:42:57,509 --> 00:42:59,007
Roger.
642
00:43:06,818 --> 00:43:08,985
Finally, the path is clear.
643
00:43:10,722 --> 00:43:12,989
I just got to get it
up to surface.
644
00:43:21,733 --> 00:43:24,400
The rov has the auv
in its grasp.
645
00:43:24,501 --> 00:43:26,001
It's coming back up.
646
00:43:26,972 --> 00:43:31,007
Frc, rov approaching surface.
647
00:43:34,646 --> 00:43:36,012
Alright, here we go.
648
00:43:44,623 --> 00:43:45,733
- You got a hold of it?
- Yep.
649
00:43:45,757 --> 00:43:47,516
Alright, back down a little bit.
650
00:43:49,226 --> 00:43:50,393
Whoo!
651
00:43:50,494 --> 00:43:51,994
That's cold, buddy.
652
00:43:54,099 --> 00:43:57,000
After a very
close call, the auv is safe.
653
00:44:01,505 --> 00:44:04,007
Alright, coming up easy.
654
00:44:08,346 --> 00:44:09,346
We're good.
655
00:44:12,384 --> 00:44:13,983
Got it, paul.
656
00:44:14,485 --> 00:44:15,684
That's it.
657
00:44:15,786 --> 00:44:17,987
I'm just glad to
have it on board.
658
00:44:19,958 --> 00:44:22,992
It's been a rough
four or five days,
659
00:44:23,094 --> 00:44:24,771
so it will be nice to actually
get a full night's sleep
660
00:44:24,795 --> 00:44:26,996
instead of a few hours
here and there.
661
00:44:29,034 --> 00:44:31,668
With the critical
gear now on board,
662
00:44:31,769 --> 00:44:33,648
the hunt for the wreck
is back on.
663
00:44:33,672 --> 00:44:34,971
Yeah, this is great.
664
00:44:35,072 --> 00:44:39,375
Having her back on board
like this, it's the best.
665
00:44:39,943 --> 00:44:41,103
The team can now press ahead.
666
00:44:44,615 --> 00:44:45,815
But there's still 230 miles
667
00:44:45,916 --> 00:44:47,983
from where Shackleton's
ship went down.
668
00:44:51,121 --> 00:44:54,990
And in that area, the sea is
still entirely covered in ice.
669
00:44:58,195 --> 00:45:01,731
Shackleton and his ship drifted
into this northwestern part
670
00:45:01,833 --> 00:45:04,000
of the weddell sea,
in October 1915.
671
00:45:08,005 --> 00:45:11,708
For 10 long months,
they've been locked in the ice
672
00:45:11,809 --> 00:45:13,690
in a bitter struggle
for survival.
673
00:45:14,445 --> 00:45:16,012
It's so damn cold.
674
00:45:18,083 --> 00:45:21,983
If you don't have an elaborate
safety net of equipment,
675
00:45:22,353 --> 00:45:23,985
you'll die.
676
00:45:25,123 --> 00:45:27,789
Shackleton's
only safety net is his ship,
677
00:45:27,891 --> 00:45:30,425
but now the mounting
pressure in the ice
678
00:45:30,527 --> 00:45:31,994
is breaking it apart.
679
00:45:34,099 --> 00:45:37,432
They're in the ship,
they can hear this ice
680
00:45:37,534 --> 00:45:38,655
moving against the ship.
681
00:45:38,737 --> 00:45:40,702
You hear the creaking
of the ship.
682
00:45:40,804 --> 00:45:43,706
You hear the pressure
on the joints.
683
00:45:44,074 --> 00:45:47,476
You never know if the ship's
just gonna break apart.
684
00:45:49,012 --> 00:45:51,280
The timbers began
to crack and groan.
685
00:45:52,150 --> 00:45:55,985
It was like heavy fireworks
and the blasting of guns.
686
00:46:07,798 --> 00:46:08,878
To see the pack ice move in
687
00:46:08,967 --> 00:46:13,101
and just squeeze the life
out of that boat,
688
00:46:14,005 --> 00:46:21,010
it must have been so trying
and so depressing.
689
00:46:24,181 --> 00:46:27,983
Mother nature
overwhelms the mighty endurance.
690
00:46:30,054 --> 00:46:33,989
Finally, shackleton gives
the order to abandon ship.
691
00:46:38,163 --> 00:46:40,329
Their only hope was to
take everything off that ship
692
00:46:40,431 --> 00:46:41,764
that they needed,
693
00:46:41,865 --> 00:46:45,001
and put it on their rescue
boats and then
694
00:46:45,603 --> 00:46:47,003
switch into survival mode.
695
00:46:48,806 --> 00:46:51,907
The 28 men and 49 dogs
696
00:46:52,010 --> 00:46:56,344
can only watch as
the endurance is overwhelmed.
697
00:47:00,150 --> 00:47:04,019
I can only image what it was
like for him when he sat there
698
00:47:04,121 --> 00:47:06,521
and stood on the ice and watched
it just slowly implode.
699
00:47:09,760 --> 00:47:11,893
Just a piece of his
heart and soul
700
00:47:11,996 --> 00:47:14,115
probably went down
with that ship when it went.
701
00:47:18,101 --> 00:47:21,003
The ship
disappears beneath the surface.
702
00:47:25,809 --> 00:47:29,010
Shackleton and his men
are truly alone.
703
00:47:30,248 --> 00:47:33,583
I think they were much more
lonely than I was on apollo 13,
704
00:47:33,851 --> 00:47:36,985
because I had
communication with home.
705
00:47:38,121 --> 00:47:41,657
Shackleton, he didn't have
a radio, he didn't have wi-fi,
706
00:47:41,759 --> 00:47:43,992
didn't have, you know,
a cellphone.
707
00:47:45,362 --> 00:47:46,362
He was alone.
708
00:47:48,932 --> 00:47:50,666
Shackleton's dream of becoming
709
00:47:50,768 --> 00:47:52,768
the first man
to cross antarctica
710
00:47:52,871 --> 00:47:57,005
is ultimately crushed
along with his ship.
711
00:48:00,978 --> 00:48:06,014
This is where his real battle
for survival begins.
712
00:48:13,824 --> 00:48:15,958
But if the ice crushed
Shackleton's ship,
713
00:48:16,059 --> 00:48:18,994
what can the team expect
to find on the sea floor?
714
00:48:21,065 --> 00:48:24,000
Mensun bound is searching
for clues in the records.
715
00:48:24,869 --> 00:48:26,568
You see in this picture here,
716
00:48:26,670 --> 00:48:28,570
the stern rose up 45 degrees,
717
00:48:28,672 --> 00:48:30,873
the bow went even further down
718
00:48:30,974 --> 00:48:34,175
and then she just slid
and was gone in minutes.
719
00:48:34,878 --> 00:48:36,579
The endurance then dives
720
00:48:36,681 --> 00:48:41,449
10,000 feet to the sea floor.
721
00:48:41,552 --> 00:48:42,885
But mensun spots evidence
722
00:48:42,987 --> 00:48:45,987
that the wooden ship likely
survived the impact.
723
00:48:47,025 --> 00:48:50,492
All this clutter that you see
in this picture here,
724
00:48:50,594 --> 00:48:52,061
all these masts and yards,
725
00:48:52,163 --> 00:48:55,797
all that was still attached to
the ship when it went down,
726
00:48:55,900 --> 00:48:58,467
and that would have
imposed an incredible
727
00:48:58,568 --> 00:49:00,001
drag on the sinking ship.
728
00:49:00,103 --> 00:49:02,438
That would've kept her upright
and would to some extent
729
00:49:02,539 --> 00:49:04,005
have slowed her down.
730
00:49:05,742 --> 00:49:07,710
I do believe
that the ship itself
731
00:49:07,811 --> 00:49:11,746
is likely to be
in an upright state,
732
00:49:11,849 --> 00:49:13,983
but also
three-dimensionally intact.
733
00:49:18,121 --> 00:49:19,989
It's promising
news for the rest of the team.
734
00:49:22,760 --> 00:49:24,994
But suddenly,
there's a new problem.
735
00:49:26,664 --> 00:49:28,630
This time it's not the auv sub,
736
00:49:29,032 --> 00:49:32,001
but the robot that's supposed
to explore the wreck.
737
00:49:32,436 --> 00:49:33,436
The pod's gone.
738
00:49:34,172 --> 00:49:37,005
It looks like
it's suffered a death blow.
739
00:49:45,983 --> 00:49:47,717
Halfway into their mission time,
740
00:49:47,985 --> 00:49:50,385
the team in antarctica
is under mounting pressure
741
00:49:50,989 --> 00:49:54,023
to reach the site
of ernest Shackleton's wreck.
742
00:49:54,958 --> 00:49:57,525
Engineers steve saint amour
and dave o'hara
743
00:49:57,862 --> 00:50:00,396
are depth testing
their underwater robot
744
00:50:00,498 --> 00:50:01,998
so it's ready to go.
745
00:50:03,568 --> 00:50:05,001
But something's not right.
746
00:50:07,637 --> 00:50:10,005
Guys, we're gonna bring it back.
747
00:50:20,385 --> 00:50:21,385
The pod's gone.
748
00:50:21,853 --> 00:50:23,485
A critical part has imploded
749
00:50:23,588 --> 00:50:25,721
under the extreme pressures
750
00:50:25,822 --> 00:50:27,989
ten thousand feet
below the surface.
751
00:50:29,059 --> 00:50:33,128
The robot's electronic brain
is now mangled metal.
752
00:50:33,797 --> 00:50:35,998
We've had
a catastrophic failure.
753
00:50:37,135 --> 00:50:41,003
We don't have all the
electronics to rebuild the rov.
754
00:50:42,974 --> 00:50:45,440
I don't know what to say,
really, I just don't.
755
00:50:45,543 --> 00:50:47,009
Yeah, I'm speechless.
756
00:50:49,646 --> 00:50:51,679
The aluminum pod
757
00:50:51,782 --> 00:50:52,826
was designed to
withstand pressure
758
00:50:52,849 --> 00:50:55,184
nearly three miles
below the surface.
759
00:50:55,987 --> 00:50:58,286
But steve thinks
the combination of extreme cold
760
00:50:58,489 --> 00:51:01,824
and a material flaw has
caused it to be crushed
761
00:51:01,893 --> 00:51:03,992
like it was nothing more
than a soda can.
762
00:51:05,496 --> 00:51:06,661
This is what we found.
763
00:51:06,764 --> 00:51:08,697
One half of the bottle
has pancaked
764
00:51:08,800 --> 00:51:10,766
into the other half
of the bottle.
765
00:51:10,867 --> 00:51:12,646
There were
quite substantial electronics
766
00:51:12,670 --> 00:51:14,670
and they are entirely crushed.
767
00:51:14,771 --> 00:51:16,739
This is the first time
in my career
768
00:51:16,840 --> 00:51:18,085
that I've ever seen
this first hand.
769
00:51:18,108 --> 00:51:21,010
This is an example of what
hydraulic pressure can do.
770
00:51:23,181 --> 00:51:26,315
It's a bitter blow
for expedition archaeologist
771
00:51:26,416 --> 00:51:27,983
mensun bound.
772
00:51:28,518 --> 00:51:29,639
The worst possible news.
773
00:51:29,920 --> 00:51:33,422
I mean, to lose our electronics
like that.
774
00:51:33,523 --> 00:51:35,523
There is no replacement.
775
00:51:35,626 --> 00:51:37,492
We can't fly in spare parts.
776
00:51:37,594 --> 00:51:39,228
There's nothing we can do.
777
00:51:40,231 --> 00:51:42,710
This was what I was going to
use to study the wreck, really,
778
00:51:42,766 --> 00:51:45,000
eyeball to eyeball
with the wreck.
779
00:51:53,945 --> 00:51:56,211
To add to the problems on deck,
780
00:51:56,313 --> 00:51:59,748
the bridge has discovered their
closest route to the wreck site
781
00:51:59,851 --> 00:52:02,985
is now totally shut off
by the ice.
782
00:52:03,820 --> 00:52:06,021
Analyzing daily satellite
photographs,
783
00:52:06,123 --> 00:52:09,992
ice pilot freddie ligthelm
is hunting for another way in.
784
00:52:12,063 --> 00:52:15,998
He's looking for channels
of open water called leads
785
00:52:17,768 --> 00:52:19,568
on the other side
of the pack ice.
786
00:52:22,172 --> 00:52:24,940
It does appear that
there's some leads opening up
787
00:52:25,041 --> 00:52:27,202
in that area, so we're quite
excited about that.
788
00:52:29,213 --> 00:52:31,914
We can actually approach the
search site coming right around
789
00:52:32,016 --> 00:52:34,782
all the ice and approaching
from the south east.
790
00:52:35,052 --> 00:52:38,987
With a bit of luck, we can be
cautiously optimistic.
791
00:52:41,092 --> 00:52:42,992
The new plan
is to go the long way round,
792
00:52:45,128 --> 00:52:47,996
skirt the pack ice, and then
head towards the wreck site.
793
00:52:51,735 --> 00:52:53,936
With a clear path ahead of them,
794
00:52:54,038 --> 00:52:55,481
the ship should be able
to reach the wreck site
795
00:52:55,505 --> 00:52:58,007
in a matter of days.
796
00:52:59,242 --> 00:53:04,012
Out on the deck, the auv team is
making their final preparations.
797
00:53:05,949 --> 00:53:08,030
All hopes now rest on them
to find the wreck.
798
00:53:09,653 --> 00:53:11,420
I'm excited about it.
799
00:53:12,123 --> 00:53:14,322
Can't beat the smile off my
face right now, you know.
800
00:53:14,525 --> 00:53:15,990
Finally getting there.
801
00:53:17,762 --> 00:53:19,827
To be in the same area
where he was at
802
00:53:19,931 --> 00:53:23,998
and to finally locate that ship
is just...
803
00:53:25,969 --> 00:53:28,090
It's an excitement
that I really can't explain.
804
00:53:29,974 --> 00:53:30,672
Finding Shackleton's ship is the
805
00:53:30,775 --> 00:53:33,007
ultimate goal of
this expedition.
806
00:53:36,847 --> 00:53:39,614
But 100 years ago,
losing the endurance
807
00:53:39,717 --> 00:53:41,849
was just the start of a journey
808
00:53:41,952 --> 00:53:43,985
that would make
ernest shackleton a legend.
809
00:53:51,461 --> 00:53:52,728
Stranded on the ice,
810
00:53:52,829 --> 00:53:54,996
Shackleton's men face
impossible odds,
811
00:53:56,132 --> 00:54:00,001
but they have blind faith
in the man they call the boss.
812
00:54:01,038 --> 00:54:04,072
There's this classic quote,
and to paraphrase it,
813
00:54:05,009 --> 00:54:07,054
"when the chips are down
and all hope is gone,
814
00:54:07,077 --> 00:54:10,012
"get down on your knees
and pray for shackleton."
815
00:54:12,182 --> 00:54:14,682
shackleton orders
his men to March for land,
816
00:54:14,784 --> 00:54:16,985
two hundred miles
across the ice.
817
00:54:19,757 --> 00:54:23,858
Shackleton has
these massive sleds
818
00:54:24,061 --> 00:54:28,998
with full wooden boats on them
loaded with supplies.
819
00:54:32,036 --> 00:54:35,670
And you could come up to
a massive pressure ridge,
820
00:54:35,773 --> 00:54:39,240
blocks of ice
as big as semi-trucks
821
00:54:39,777 --> 00:54:44,713
that are shoved up into
the air ten, 15, 20 feet,
822
00:54:44,815 --> 00:54:45,581
and so,
as you're approaching it,
823
00:54:45,682 --> 00:54:47,983
it basically is a wall of ice.
824
00:54:50,021 --> 00:54:52,065
I mean, I don't like to say
things are impossible,
825
00:54:52,088 --> 00:54:54,329
but I don't know how they
would get over that stuff.
826
00:54:57,094 --> 00:54:59,228
The men cover only
nine miles of pack ice
827
00:54:59,329 --> 00:55:00,996
in a week.
828
00:55:02,032 --> 00:55:06,001
Shackleton realizes
reaching land is impossible.
829
00:55:07,137 --> 00:55:11,005
To make matters worse, they're
slowly starving to death.
830
00:55:12,009 --> 00:55:15,077
As food supplies run out,
they're forced to eat
831
00:55:15,179 --> 00:55:18,012
the only things that brought
them joy in the wilderness,
832
00:55:18,382 --> 00:55:19,382
their dogs.
833
00:55:20,251 --> 00:55:24,420
The companionship
that the dogs provided the team
834
00:55:24,521 --> 00:55:26,322
was quite significant.
835
00:55:27,123 --> 00:55:32,161
That moment must have been hard
in an emotional point,
836
00:55:33,063 --> 00:55:37,532
but it was also a mirror
of how extended they were
837
00:55:37,635 --> 00:55:40,735
and how precarious life was.
838
00:55:41,137 --> 00:55:45,007
If you're shooting your dogs,
you're on the down and outs.
839
00:55:49,880 --> 00:55:51,679
Then, as the ice they're on
840
00:55:51,782 --> 00:55:53,621
drifts closer to the open ocean,
841
00:55:54,818 --> 00:55:57,018
it starts to break apart
beneath them.
842
00:56:05,829 --> 00:56:07,896
And they have to rush
onto their boats.
843
00:56:07,998 --> 00:56:10,666
They have to throw
their things on their boats.
844
00:56:10,768 --> 00:56:12,768
They have to get
into these boats
845
00:56:12,869 --> 00:56:15,204
with everything they need
to survive.
846
00:56:16,039 --> 00:56:21,009
They have no choice,
but to go from relative safety
847
00:56:21,644 --> 00:56:23,010
to basically certain death.
848
00:56:26,016 --> 00:56:27,615
Shackleton
has finally left the ice
849
00:56:27,717 --> 00:56:29,985
that's trapped him
for 15 months.
850
00:56:32,021 --> 00:56:35,990
But now he faces a new danger,
the open weddell sea.
851
00:56:41,065 --> 00:56:43,998
Even today this sea is nearly
impossible to navigate,
852
00:56:45,936 --> 00:56:49,003
as the crew of the agulhas ii
is finding out.
853
00:56:52,510 --> 00:56:54,009
We are now just stuck.
854
00:57:03,153 --> 00:57:06,889
To reach the site
of ernest Shackleton's wreck,
855
00:57:06,990 --> 00:57:09,625
the agulhas ii has powered
around the ice pack
856
00:57:09,726 --> 00:57:11,994
at the heart of the weddell sea.
857
00:57:13,130 --> 00:57:15,998
And she's smashed through
thick ice for the last 24 hours.
858
00:57:21,005 --> 00:57:23,806
But just 19 miles from where
the endurance sank,
859
00:57:23,907 --> 00:57:27,309
the agulhas ii runs
into serious trouble.
860
00:57:37,987 --> 00:57:41,989
She's stuck in the ice
just like Shackleton's ship.
861
00:57:45,896 --> 00:57:47,996
- we're stuck.
We're in a white out.
862
00:57:48,898 --> 00:57:51,567
The ice is well over
three meters thick,
863
00:57:51,668 --> 00:57:53,568
possibly even as much as five,
864
00:57:53,670 --> 00:57:56,003
and we're way, way below zero.
865
00:57:59,009 --> 00:58:01,076
In the early
hours of the morning,
866
00:58:01,177 --> 00:58:05,280
the ship was brought to a
standstill by impenetrable fog.
867
00:58:06,016 --> 00:58:08,983
The ice moved in around her
and froze her in.
868
00:58:12,690 --> 00:58:14,755
If the temperature
drops further,
869
00:58:14,858 --> 00:58:17,559
the ice could trap the crew
for days,
870
00:58:17,661 --> 00:58:18,771
and the harsh antarctic winter
871
00:58:18,795 --> 00:58:20,996
is already barreling
down on them.
872
00:58:21,532 --> 00:58:23,965
But devon's got an idea.
873
00:58:24,201 --> 00:58:26,568
We could do like
shackleton did on the endurance
874
00:58:26,670 --> 00:58:28,036
when they got stuck in the ice
875
00:58:28,137 --> 00:58:29,983
and had the whole crew run
from one side of the vessel
876
00:58:30,007 --> 00:58:32,047
to the other, together,
to rock the ship free.
877
00:58:38,715 --> 00:58:39,715
Devon's half kidding
878
00:58:39,916 --> 00:58:42,985
but his plan
isn't as crazy as it sounds.
879
00:58:44,153 --> 00:58:48,891
Captain bengu has 18 years'
experience in antarctic ice
880
00:58:48,992 --> 00:58:51,994
and he's got a 21st-century
trick up his sleeve.
881
00:58:54,097 --> 00:58:57,331
Instead of moving his crew
from one side to the other,
882
00:58:57,867 --> 00:59:00,001
he's shifting a 40-ton
container of fuel
883
00:59:03,373 --> 00:59:05,007
using his crane.
884
00:59:16,786 --> 00:59:17,652
And in the engine room,
885
00:59:17,755 --> 00:59:19,721
engineer mark o'reilly
is firing up
886
00:59:19,822 --> 00:59:21,989
the two propellers
to maximum power.
887
00:59:27,664 --> 00:59:28,996
After 14 hours using its crane,
888
00:59:32,769 --> 00:59:35,003
and its 12,000
horsepower engines,
889
00:59:41,744 --> 00:59:44,012
the agulhas ii
finally breaks free.
890
00:59:54,858 --> 00:59:56,557
Sounds like we're moving again.
891
00:59:56,860 --> 00:59:59,527
See, you can hear the distinct
difference
892
00:59:59,630 --> 01:00:01,929
in the sound here, you know.
893
01:00:02,032 --> 01:00:04,432
That's definitely ice scraping
alongside the vessel
894
01:00:04,534 --> 01:00:06,001
as we're moving forward.
895
01:00:16,981 --> 01:00:19,947
And now that the fog has lifted,
896
01:00:20,050 --> 01:00:22,210
the captain has a clear view
of the route ahead.
897
01:00:25,121 --> 01:00:28,990
But the ship still has to get
them inside the wreck zone.
898
01:00:30,094 --> 01:00:33,195
And the closer they get,
the thicker the ice becomes.
899
01:00:33,998 --> 01:00:37,199
This really is
shackleton territory.
900
01:00:37,501 --> 01:00:39,201
The ice here is old,
901
01:00:39,769 --> 01:00:42,070
it's gnarled, it's all hummocked
902
01:00:42,172 --> 01:00:46,007
and it's all raftered up and
steepled up into these ridges.
903
01:00:48,846 --> 01:00:50,778
It's amazing that
those guys survived
904
01:00:50,880 --> 01:00:53,014
as long as they did
on ice like this.
905
01:00:54,351 --> 01:00:55,351
It's incredible.
906
01:01:00,056 --> 01:01:02,490
This is the ice
that trapped shackleton
907
01:01:02,592 --> 01:01:03,992
and his men for 15 months.
908
01:01:07,898 --> 01:01:10,565
When they finally escape it
on life boats,
909
01:01:11,034 --> 01:01:13,367
they have to battle
freezing winds and ice storms
910
01:01:13,469 --> 01:01:15,003
on the open ocean.
911
01:01:17,041 --> 01:01:21,009
Shackleton sets out
for a tiny island 60 miles away.
912
01:01:22,478 --> 01:01:24,012
It's his final hope.
913
01:01:26,949 --> 01:01:30,117
On the seventh day at sea
and barely alive,
914
01:01:30,621 --> 01:01:31,987
they miraculously spot land.
915
01:01:32,922 --> 01:01:34,989
And when they saw
elephant island,
916
01:01:36,427 --> 01:01:38,994
everybody cheered.
917
01:01:39,096 --> 01:01:41,996
And we pulled as hard
as we could to make our landing.
918
01:01:43,967 --> 01:01:46,668
But it was
a weird sort of euphoria
919
01:01:46,769 --> 01:01:48,804
because they hadn't
made it home,
920
01:01:48,905 --> 01:01:52,407
they had made it onto
an inhospitable rock.
921
01:01:53,043 --> 01:01:56,610
The first night there,
what was left of their tents
922
01:01:56,713 --> 01:01:59,014
was just shredded in the wind.
923
01:01:59,782 --> 01:02:01,750
Humans were not
meant to be there.
924
01:02:01,851 --> 01:02:03,985
The whalers
didn't even come by there.
925
01:02:05,922 --> 01:02:08,389
They are on a tiny
storm battered
926
01:02:08,492 --> 01:02:09,990
pinprick of a rock.
927
01:02:11,829 --> 01:02:13,628
Of course, food was very short.
928
01:02:14,097 --> 01:02:16,431
We had very little except
a little seal and penguin
929
01:02:16,532 --> 01:02:17,612
whenever they came up.
930
01:02:18,101 --> 01:02:21,436
Shackleton knew
the men could not survive.
931
01:02:21,739 --> 01:02:23,483
Conditions would only get worse.
932
01:02:23,507 --> 01:02:25,039
He had to get help,
933
01:02:26,009 --> 01:02:29,010
and he knew he had to go
as quick as possible.
934
01:02:30,947 --> 01:02:31,746
But the only way out is across
935
01:02:31,849 --> 01:02:34,983
the most dangerous ocean
on the planet.
936
01:02:37,487 --> 01:02:38,987
Taking only five men,
937
01:02:39,088 --> 01:02:41,489
two barrels of water
and four weeks of food rations,
938
01:02:41,958 --> 01:02:44,992
shackleton launches
their largest life boat,
939
01:02:45,394 --> 01:02:47,128
the james caird.
940
01:02:47,797 --> 01:02:49,175
There's a picture
taken by hurley
941
01:02:49,199 --> 01:02:52,266
with a little brownie camera,
with the little camera he had.
942
01:02:53,070 --> 01:02:56,003
That picture scares
the bejeezus out of me.
943
01:02:56,606 --> 01:02:58,606
This tiny speck of a boat,
944
01:02:58,708 --> 01:03:02,643
them all waving bravely at them
945
01:03:02,746 --> 01:03:05,012
as if to give them
encouragement.
946
01:03:07,617 --> 01:03:09,184
Most of them must have felt,
947
01:03:09,686 --> 01:03:10,797
"they're never going to make it
948
01:03:10,820 --> 01:03:12,661
"and we're never
going to be saved."
949
01:03:15,793 --> 01:03:17,692
Shackleton's plan is to
950
01:03:17,795 --> 01:03:19,894
head to the island of
south georgia,
951
01:03:19,996 --> 01:03:22,998
eight hundred miles across
the southern ocean.
952
01:03:24,168 --> 01:03:28,003
The southern ocean is probably
one of the most treacherous
953
01:03:28,704 --> 01:03:30,005
bodies of water on this planet.
954
01:03:32,108 --> 01:03:36,177
It's not uncommon to have
winds in the 50s, 60s, 70 mph,
955
01:03:36,547 --> 01:03:37,813
swells up to 100 foot.
956
01:03:38,114 --> 01:03:41,650
The water temperature is
just a little above freezing.
957
01:03:41,751 --> 01:03:43,985
It can sink a vessel in seconds.
958
01:03:46,824 --> 01:03:49,891
It's like going up
a hill or a mountain
959
01:03:49,992 --> 01:03:52,760
and you go up and up
and then you reach the top
960
01:03:52,862 --> 01:03:54,996
and then you go down
and you skid down.
961
01:03:59,001 --> 01:04:01,001
The odds
are stacked against them,
962
01:04:02,105 --> 01:04:05,005
but shackleton knows if
he doesn't make it to land,
963
01:04:05,541 --> 01:04:08,009
all his men will perish.
964
01:04:17,119 --> 01:04:21,289
A century on,
after two years of planning...
965
01:04:21,992 --> 01:04:23,992
this is the point
where she went down.
966
01:04:25,929 --> 01:04:27,208
Five and a half weeks at sea,
967
01:04:31,702 --> 01:04:34,001
and four days battling
the ice...
968
01:04:43,947 --> 01:04:46,447
The agulhas ii
has finally broken through
969
01:04:47,117 --> 01:04:51,987
to the exact coordinates
of the endurance wreck site.
970
01:04:58,527 --> 01:05:00,996
It's a major achievement.
971
01:05:05,902 --> 01:05:09,003
Only a handful of ships
have ever been here.
972
01:05:14,210 --> 01:05:16,811
It feels great. I was
up on the bridge till late.
973
01:05:16,914 --> 01:05:18,954
I only got two hours' sleep,
I'm shattered,
974
01:05:19,048 --> 01:05:22,817
but, you know, at the same time
I'm really happy.
975
01:05:22,920 --> 01:05:25,719
But, you know,
we've still got to find it.
976
01:05:26,088 --> 01:05:31,326
To actually be here and able
to be part of the search
977
01:05:31,427 --> 01:05:33,327
is very exciting.
978
01:05:33,429 --> 01:05:34,628
I'm ready for it.
979
01:05:34,731 --> 01:05:36,998
But can they reach
the endurance?
980
01:05:43,172 --> 01:05:46,007
Deep within the
iciest part of the weddell sea,
981
01:05:46,443 --> 01:05:48,409
against all odds,
982
01:05:48,878 --> 01:05:52,012
the expedition to find
Shackleton's wreck
983
01:05:53,817 --> 01:05:55,784
has broken through
to the actual site
984
01:05:55,885 --> 01:05:58,987
where the ship sank
over a 100 years ago.
985
01:06:01,958 --> 01:06:05,559
Steve and dave's robot sub
is out of the game.
986
01:06:05,963 --> 01:06:08,996
Damaged beyond repair,
it can't hunt the wreck.
987
01:06:09,666 --> 01:06:12,800
But there's still the auv sub,
988
01:06:12,902 --> 01:06:16,003
which will use sonar
to scan the sea floor.
989
01:06:17,007 --> 01:06:20,342
We're close to the actual
last known location
990
01:06:20,443 --> 01:06:22,010
of the endurance.
991
01:06:22,878 --> 01:06:24,945
We're gonna launch
from where we're at,
992
01:06:25,047 --> 01:06:27,208
all the way down to
3,000 meters, to the bottom.
993
01:06:28,617 --> 01:06:30,885
Hopefully everything works well,
994
01:06:30,987 --> 01:06:33,989
according to plan,
and we'll see what happens.
995
01:06:39,096 --> 01:06:41,829
Existing scans
reveal that the agulhas ii
996
01:06:41,931 --> 01:06:46,001
is floating above
a vast underwater plain.
997
01:06:47,670 --> 01:06:49,771
Here the sea floor plunges down
998
01:06:49,873 --> 01:06:52,507
forty times the height
of niagara falls,
999
01:06:52,608 --> 01:06:55,010
to a depth of 10,000 feet.
1000
01:06:55,978 --> 01:06:58,646
This is the deepest zone
of the weddell sea,
1001
01:06:58,748 --> 01:07:01,916
and the crew believes this plain
1002
01:07:02,018 --> 01:07:04,985
is the final resting ground
of Shackleton's ship.
1003
01:07:08,759 --> 01:07:11,059
To program
their sub's flight path,
1004
01:07:11,161 --> 01:07:13,405
the team needs to know what
the water conditions are like
1005
01:07:13,429 --> 01:07:15,230
at the sea floor.
1006
01:07:17,967 --> 01:07:22,003
They deploy a monitoring device
called a ctd
1007
01:07:22,539 --> 01:07:24,005
to analyze the water.
1008
01:07:30,713 --> 01:07:33,481
Somewhere in these icy depths,
1009
01:07:33,583 --> 01:07:34,983
ten thousand feet down,
1010
01:07:37,788 --> 01:07:39,987
lie the remains
of Shackleton's ship.
1011
01:07:43,559 --> 01:07:45,659
Mensun bound wants to know
1012
01:07:45,762 --> 01:07:47,661
what the data
might also tell him
1013
01:07:47,764 --> 01:07:49,563
about the condition
of the wreck.
1014
01:07:49,666 --> 01:07:51,733
Hey, guys, what have you got?
1015
01:07:51,835 --> 01:07:52,666
This is the ctd
over the wreck site
1016
01:07:52,768 --> 01:07:54,835
and it's just got to the bottom,
1017
01:07:54,938 --> 01:07:57,704
so we're at about
just over 3,000 meters.
1018
01:07:57,807 --> 01:07:58,951
And as we get
right to the bottom,
1019
01:07:58,974 --> 01:08:02,811
sort of in the last couple
of hundred meters,
1020
01:08:02,913 --> 01:08:05,012
the temperature
goes down considerably.
1021
01:08:05,614 --> 01:08:06,914
Remarkably,
1022
01:08:07,016 --> 01:08:10,985
the water at the sea floor
is below 32 degrees.
1023
01:08:12,289 --> 01:08:16,024
It doesn't freeze solid because
of the vast pressures at depth.
1024
01:08:17,060 --> 01:08:20,795
Depth combined
with the super cold water,
1025
01:08:20,896 --> 01:08:23,530
any bacterial activity
will be slowed down.
1026
01:08:23,632 --> 01:08:24,832
This is all pretty good news
1027
01:08:24,868 --> 01:08:27,001
for the preservation
of the endurance.
1028
01:08:32,175 --> 01:08:36,310
All they've got
to do now is launch the auv sub
1029
01:08:36,412 --> 01:08:37,811
to hunt it down.
1030
01:08:37,913 --> 01:08:40,014
Hit that hydraulics
when you walk around.
1031
01:08:40,817 --> 01:08:44,051
But all the ice here
is a problem.
1032
01:08:44,154 --> 01:08:47,454
The auv normally needs an open
run of several hundred feet
1033
01:08:47,556 --> 01:08:48,989
to get below the water.
1034
01:08:51,528 --> 01:08:53,927
To make it sink faster,
1035
01:08:54,029 --> 01:08:56,698
devon and blake are trying out
an unusual solution,
1036
01:08:56,800 --> 01:09:01,002
using a bag of salt
to add weight.
1037
01:09:03,773 --> 01:09:05,707
But will their
improvised fix work
1038
01:09:05,809 --> 01:09:08,009
when it comes to
the actual launch?
1039
01:09:09,880 --> 01:09:12,980
I've added five kilos of salt.
1040
01:09:13,082 --> 01:09:15,850
Salt should help it get down
in this flat calm water
1041
01:09:15,952 --> 01:09:18,987
and get down to bottom,
and start tracking.
1042
01:09:20,489 --> 01:09:21,569
Ready for armed state.
1043
01:09:32,335 --> 01:09:33,167
It's heavy.
1044
01:09:33,270 --> 01:09:35,069
Alright.
1045
01:09:35,905 --> 01:09:38,006
Adding the salt is a success.
1046
01:09:39,842 --> 01:09:43,011
The propellers bite
and the auv dives.
1047
01:09:49,019 --> 01:09:52,520
That was a successful launch
for the first mission
1048
01:09:52,622 --> 01:09:55,390
to search for the endurance.
1049
01:09:55,824 --> 01:09:57,859
If all goes well
on the mission plan,
1050
01:09:57,961 --> 01:10:00,994
we should be recovering
in about 42-43 hours.
1051
01:10:03,132 --> 01:10:06,301
If it's down there,
we should be able to find it.
1052
01:10:06,403 --> 01:10:07,403
Fingers crossed.
1053
01:10:11,640 --> 01:10:13,173
So far, so good.
1054
01:10:13,643 --> 01:10:15,877
The plan now is for the auv
1055
01:10:15,979 --> 01:10:18,845
to spend the next 43 hours
away from the ship
1056
01:10:18,948 --> 01:10:22,516
on a pre-programmed route
beneath the ice.
1057
01:10:23,153 --> 01:10:26,654
At the moment we've just got
to depth, almost 3,000 meters,
1058
01:10:26,756 --> 01:10:28,957
and we just got comms
with the auv.
1059
01:10:29,059 --> 01:10:31,993
Everything's good. She's where
she's supposed to be.
1060
01:10:36,032 --> 01:10:37,475
Channing's team
checks in with the auv
1061
01:10:37,500 --> 01:10:39,801
at regular intervals
1062
01:10:39,903 --> 01:10:42,002
using the underwater
acoustic comms system.
1063
01:10:44,807 --> 01:10:48,743
That's a very big relief
that she's not
1064
01:10:48,845 --> 01:10:49,889
given us issues
underneath the ice.
1065
01:10:49,912 --> 01:10:51,823
So everything's looking good
at the moment.
1066
01:10:51,847 --> 01:10:55,015
We're gonna
keep our fingers crossed
1067
01:10:55,118 --> 01:10:57,358
and keep thinking positive
and keep pushing forward.
1068
01:10:58,954 --> 01:11:01,521
Now the ship must follow the auv
1069
01:11:01,625 --> 01:11:03,992
no matter how thick the ice.
1070
01:11:07,497 --> 01:11:09,596
After over 100 years,
1071
01:11:09,698 --> 01:11:11,932
the hunt for Shackleton's wreck
1072
01:11:12,034 --> 01:11:17,005
comes down to what happens
in the next 40 hours.
1073
01:11:23,012 --> 01:11:25,012
The team
has succeeded in reaching
1074
01:11:25,114 --> 01:11:27,981
the exact place sir ernest
shackleton lost his ship.
1075
01:11:29,485 --> 01:11:30,984
Now can they find it?
1076
01:11:32,521 --> 01:11:33,787
Ten thousand feet down,
1077
01:11:33,890 --> 01:11:36,858
the auv sub is halfway
through its mission.
1078
01:11:36,960 --> 01:11:39,894
She's proceeding onto line three
1079
01:11:39,996 --> 01:11:41,873
and we're actually
gonna jump up to that line,
1080
01:11:41,898 --> 01:11:44,465
find a nice comfortable spot
in these floes
1081
01:11:44,567 --> 01:11:46,234
and wait for her there.
1082
01:11:46,536 --> 01:11:47,868
For now,
1083
01:11:47,970 --> 01:11:50,904
auv team leader channing
thomas and his team
1084
01:11:51,006 --> 01:11:54,007
can only follow their sub's
programmed route.
1085
01:11:59,515 --> 01:12:00,981
Roger.
1086
01:12:01,751 --> 01:12:03,885
We monitor it still on that line
1087
01:12:03,987 --> 01:12:07,755
as long as we can
to make sure she's flying true
1088
01:12:07,856 --> 01:12:09,990
and straight
and at the right altitude.
1089
01:12:10,894 --> 01:12:13,661
Much like on an airplane,
1090
01:12:13,762 --> 01:12:16,029
all the scan data from
the auv sub
1091
01:12:16,131 --> 01:12:20,001
is recorded onto a black box
stored on the sub itself.
1092
01:12:21,970 --> 01:12:23,748
Devon will only find out
if it's found the wreck
1093
01:12:23,773 --> 01:12:26,006
once they pull it out
of the water.
1094
01:12:26,876 --> 01:12:30,011
But that won't be
for another 24 hours.
1095
01:12:37,720 --> 01:12:39,854
Five months
after losing his ship,
1096
01:12:39,956 --> 01:12:43,423
shackleton faced
impossible odds in antarctica.
1097
01:12:43,859 --> 01:12:46,894
He left 22 men behind
on elephant island
1098
01:12:46,996 --> 01:12:51,164
and he's braving the worst
ocean on the planet.
1099
01:12:52,135 --> 01:12:56,470
But after battling across
800 miles of it in two weeks
1100
01:12:56,573 --> 01:12:58,905
and painfully dehydrated,
1101
01:12:59,007 --> 01:13:02,109
he finally spots the island
of south georgia.
1102
01:13:02,444 --> 01:13:03,944
They'd made it.
1103
01:13:04,046 --> 01:13:07,948
They had made the toughest
crossing in the world
1104
01:13:08,051 --> 01:13:11,551
in a vessel that never made
that crossing before.
1105
01:13:11,654 --> 01:13:13,988
There was a sense of euphoria.
1106
01:13:17,092 --> 01:13:19,860
From his landing
point at king haakon bay,
1107
01:13:19,962 --> 01:13:22,430
the closest settlement is a
whaling station,
1108
01:13:22,532 --> 01:13:23,997
30 miles to the east.
1109
01:13:26,101 --> 01:13:31,005
But blocking his path now
is a towering mountain range.
1110
01:13:33,076 --> 01:13:35,877
The mountains
were covered with snow and ice
1111
01:13:35,979 --> 01:13:39,613
and to get some sort of
traction on the snow,
1112
01:13:39,716 --> 01:13:43,885
they took nails out of the boat
1113
01:13:43,987 --> 01:13:46,487
and pounded them through
the bottom of the shoe.
1114
01:13:46,823 --> 01:13:49,556
Mountaineer conrad anker
1115
01:13:49,658 --> 01:13:51,893
has followed Shackleton's route.
1116
01:13:51,994 --> 01:13:54,628
Shackleton's
traverse of south georgia,
1117
01:13:54,730 --> 01:13:56,863
in the context
of when he did it,
1118
01:13:56,966 --> 01:14:00,435
was certainly one of
the most technical climbs
1119
01:14:00,537 --> 01:14:02,002
done in the mountains.
1120
01:14:03,072 --> 01:14:06,140
If they didn't make it,
their men were going to die.
1121
01:14:07,176 --> 01:14:10,011
And when you have that degree
of immediacy on your goals,
1122
01:14:10,512 --> 01:14:12,012
you get things done.
1123
01:14:13,917 --> 01:14:16,984
After climbing for 36 hours,
1124
01:14:18,887 --> 01:14:22,989
shackleton finally limps
into civilization.
1125
01:14:28,832 --> 01:14:30,530
When shackleton told his story
1126
01:14:30,632 --> 01:14:31,710
of what they'd been through,
1127
01:14:31,734 --> 01:14:33,533
no-one at the whaling station,
1128
01:14:33,569 --> 01:14:34,836
they couldn't believe it.
1129
01:14:34,938 --> 01:14:39,006
Every step of this story
was beyond belief.
1130
01:14:42,011 --> 01:14:45,645
But, of course, it wasn't over
for shackleton then.
1131
01:14:46,149 --> 01:14:49,216
He had to go back and save
the people on elephant island.
1132
01:14:50,185 --> 01:14:53,720
Shackleton strives
tirelessly for four months,
1133
01:14:53,823 --> 01:14:55,989
to break back through
the frozen sea.
1134
01:14:58,795 --> 01:15:01,996
At last,
he approaches elephant island.
1135
01:15:03,533 --> 01:15:04,676
And as he's going ashore,
1136
01:15:04,701 --> 01:15:07,068
the men on the island are
seeing the rescue boat is here
1137
01:15:07,170 --> 01:15:10,003
and they're starting to come
out from under the shelter.
1138
01:15:10,105 --> 01:15:13,807
And shackleton is counting,
"one, two, three, four,"
1139
01:15:13,909 --> 01:15:17,011
all the way up until
he's counted everyone.
1140
01:15:21,783 --> 01:15:24,784
And he looks to worsley
and says,
1141
01:15:24,887 --> 01:15:27,587
"they're all there,
they're all alive."
1142
01:15:27,923 --> 01:15:30,524
and the emotion
that he had at that time,
1143
01:15:30,627 --> 01:15:31,993
had to be just overwhelming.
1144
01:15:38,234 --> 01:15:42,069
To bring everybody on
his expedition back home alive,
1145
01:15:42,171 --> 01:15:45,640
was probably one of the
greatest adventure achievements
1146
01:15:45,742 --> 01:15:48,009
that we have
in our history books.
1147
01:15:51,780 --> 01:15:53,780
On board the agulhas ii,
1148
01:15:53,882 --> 01:15:56,484
the crew hunting down
Shackleton's wreck
1149
01:15:56,586 --> 01:15:57,984
has suffered a major blow.
1150
01:16:02,591 --> 01:16:04,958
Thirty hours into the dive,
1151
01:16:05,060 --> 01:16:08,996
the auv that's scanning
the seafloor has gone missing.
1152
01:16:10,699 --> 01:16:11,599
The multi-million-dollar machine
1153
01:16:11,701 --> 01:16:14,001
has likely located the wreck.
1154
01:16:15,771 --> 01:16:18,506
But auv operators
devon and blake
1155
01:16:18,608 --> 01:16:20,006
have lost contact with it.
1156
01:16:21,511 --> 01:16:22,710
If they can't reconnect,
1157
01:16:22,811 --> 01:16:25,546
they'll never find out
what's below.
1158
01:16:25,648 --> 01:16:27,047
We've gotten over the site.
1159
01:16:27,149 --> 01:16:31,652
We've got the best equipment
and opportunity to find it
1160
01:16:31,753 --> 01:16:32,831
and if we can't recover the data
1161
01:16:32,854 --> 01:16:34,632
after the auv has already run
its mission,
1162
01:16:34,657 --> 01:16:36,990
that's kind of heart-breaking.
1163
01:16:40,063 --> 01:16:42,430
Devon's last
hope is that it's waiting
1164
01:16:42,532 --> 01:16:43,863
at its rendezvous point,
1165
01:16:43,966 --> 01:16:48,234
ten miles away,
600 feet below the surface.
1166
01:16:48,770 --> 01:16:50,610
But they need to get there fast.
1167
01:16:50,806 --> 01:16:53,908
The auv's battery
is running down
1168
01:16:54,010 --> 01:16:57,612
and once the battery dies,
the auv's nothing more
1169
01:16:57,713 --> 01:17:01,015
than a 4,000-pound paperweight.
1170
01:17:03,386 --> 01:17:04,851
The problem is,
1171
01:17:04,953 --> 01:17:07,988
getting anywhere out here
is far from easy.
1172
01:17:09,591 --> 01:17:11,993
Twelve hours into the chase,
1173
01:17:12,729 --> 01:17:16,262
the agulhas ii grinds to a halt.
1174
01:17:22,505 --> 01:17:25,006
We're stuck.
1175
01:17:26,809 --> 01:17:28,775
In normal conditions
with open water,
1176
01:17:28,877 --> 01:17:31,811
we'd just shoot over
to the loiter box,
1177
01:17:31,913 --> 01:17:33,792
pick her up
and everything would be fine.
1178
01:17:33,815 --> 01:17:36,384
But, yeah,
right now we can't move.
1179
01:17:37,119 --> 01:17:41,588
We're now almost eight nautical
miles to get to the spot
1180
01:17:41,690 --> 01:17:43,990
and her battery is running out.
1181
01:17:46,162 --> 01:17:48,996
It's tough to search for an auv
in this kind of situation.
1182
01:17:49,998 --> 01:17:53,067
The team
doesn't have time to wait.
1183
01:17:53,168 --> 01:17:57,003
Last time the ship got stuck,
it took 14 hours to escape.
1184
01:17:57,640 --> 01:17:58,972
If it takes that long again,
1185
01:17:59,074 --> 01:18:03,010
the sub's battery will be dead
before they reach it.
1186
01:18:04,546 --> 01:18:05,880
It's just a waiting game.
1187
01:18:05,981 --> 01:18:07,792
It depends on how long we got,
we need to wait,
1188
01:18:07,817 --> 01:18:09,595
so, hopefully,
not too much longer
1189
01:18:09,618 --> 01:18:11,985
because we are losing time.
1190
01:18:25,902 --> 01:18:30,003
At last, the ship breaks free.
1191
01:18:36,578 --> 01:18:37,738
By the time the agulhas ii
1192
01:18:37,779 --> 01:18:40,314
makes it to
the planned end point,
1193
01:18:41,016 --> 01:18:44,984
the auv's only got
four hours of battery left.
1194
01:18:47,090 --> 01:18:49,989
The team prepares to lower its
main communication system.
1195
01:18:51,894 --> 01:18:53,538
Yeah, we're just gonna get it
together here,
1196
01:18:53,563 --> 01:18:54,994
spin it and then lift it.
1197
01:19:02,805 --> 01:19:04,003
But there's no signal.
1198
01:19:06,743 --> 01:19:09,009
The auv is not where they hoped.
1199
01:19:10,712 --> 01:19:14,014
There's just
one last possibility.
1200
01:19:15,952 --> 01:19:18,985
Has it come up
and gotten stuck under the ice?
1201
01:19:19,889 --> 01:19:22,489
Devon and blake
want to use another device
1202
01:19:22,591 --> 01:19:24,824
to boost the comms system.
1203
01:19:25,127 --> 01:19:29,764
We're gonna drop this
transponder down into the water
1204
01:19:29,865 --> 01:19:34,001
and bounce the signal
possibly to the auv.
1205
01:19:37,774 --> 01:19:40,407
At this point,
any response is good.
1206
01:19:41,176 --> 01:19:43,778
They need to pick
up a signal from the sub.
1207
01:19:43,880 --> 01:19:47,014
This is the last known
possible location.
1208
01:19:48,484 --> 01:19:51,351
- I'm 50/50.
- Yep.
1209
01:19:51,453 --> 01:19:52,987
It's a crap shoot.
1210
01:19:53,088 --> 01:19:55,989
It's the team's
final roll of the dice.
1211
01:19:58,493 --> 01:19:59,993
But what will they find?
1212
01:20:06,034 --> 01:20:08,536
At the site
where ernest shackleton
1213
01:20:08,637 --> 01:20:11,305
lost his ship a century ago
1214
01:20:11,541 --> 01:20:15,009
the team sent to find it
has a tough call to make.
1215
01:20:17,646 --> 01:20:19,913
Their final attempt to locate
1216
01:20:20,015 --> 01:20:23,984
their multi-million-dollar
auv sub has failed.
1217
01:20:26,087 --> 01:20:28,721
We got there and we could
not establish communication
1218
01:20:28,824 --> 01:20:31,926
and we started realizing
it's not here.
1219
01:20:32,261 --> 01:20:35,996
Without the auv,
the hunt for the wreck is over.
1220
01:20:38,434 --> 01:20:41,001
It hurt. You know?
1221
01:20:48,845 --> 01:20:51,545
The auv could be anywhere.
1222
01:20:51,646 --> 01:20:53,012
It's likely out of battery.
1223
01:20:55,751 --> 01:20:57,984
And temperatures
are dropping fast.
1224
01:20:59,287 --> 01:21:03,323
The ice floes that have trapped
them twice in the last 48 hours
1225
01:21:03,426 --> 01:21:04,992
are closing in.
1226
01:21:06,595 --> 01:21:08,695
If they don't get out soon,
1227
01:21:08,797 --> 01:21:11,431
the ice could trap them
for weeks,
1228
01:21:11,533 --> 01:21:13,000
just like the endurance.
1229
01:21:17,640 --> 01:21:20,006
Captain bengu makes the call.
1230
01:21:22,578 --> 01:21:24,578
I personally feel we've...
1231
01:21:24,680 --> 01:21:26,447
We've done exceptionally well
1232
01:21:26,548 --> 01:21:27,680
under the circumstances.
1233
01:21:27,783 --> 01:21:30,717
I think we just accept
and let go.
1234
01:21:30,819 --> 01:21:31,829
We are at the end
of the season now.
1235
01:21:31,854 --> 01:21:33,988
This is where the ice
starts forming first
1236
01:21:34,090 --> 01:21:36,990
and, yeah, we should
certainly get out of this area.
1237
01:21:38,961 --> 01:21:40,527
Antarctica's
a tough cookie to crack.
1238
01:21:40,630 --> 01:21:41,640
Shackleton figured that out.
1239
01:21:41,663 --> 01:21:43,997
Obviously we're figuring it out.
1240
01:21:47,103 --> 01:21:49,435
The antarctic
has already cost the team
1241
01:21:49,537 --> 01:21:51,738
one of their auv subs
1242
01:21:51,841 --> 01:21:55,009
and destroyed
their underwater robot.
1243
01:21:57,212 --> 01:22:00,980
We came down
with bigger, better technology,
1244
01:22:01,082 --> 01:22:03,363
but the same rules
that shackleton was playing by,
1245
01:22:03,452 --> 01:22:04,984
still apply today.
1246
01:22:08,823 --> 01:22:10,890
You know, mother nature,
at some point
1247
01:22:10,993 --> 01:22:13,073
puts her foot down
and lets you know who's boss.
1248
01:22:15,631 --> 01:22:16,997
The ice still rules.
1249
01:22:18,067 --> 01:22:21,935
The ice is still the king
and you have no choice.
1250
01:22:22,037 --> 01:22:25,305
You're merely there
trying to do the best you can.
1251
01:22:26,175 --> 01:22:27,942
For now, the
secret of Shackleton's lost ship
1252
01:22:28,043 --> 01:22:33,279
remains locked in the auv,
hidden beneath the ice.
1253
01:22:33,849 --> 01:22:34,889
The auv could be anywhere.
1254
01:22:34,917 --> 01:22:37,518
At this point
it's likely that it's buoyant
1255
01:22:37,619 --> 01:22:40,386
and floating under the ice.
1256
01:22:40,823 --> 01:22:42,756
That information
that's on that auv,
1257
01:22:42,858 --> 01:22:45,993
could hold the secret
of the endurance.
1258
01:22:48,764 --> 01:22:50,698
We were always
up against the ice.
1259
01:22:50,800 --> 01:22:52,600
That was always
the enemy for us,
1260
01:22:52,667 --> 01:22:55,002
just as it was for shackleton.
1261
01:22:55,738 --> 01:22:58,005
And, yeah, it's beaten us also.
1262
01:23:05,081 --> 01:23:08,681
The loss of the
endurance a century ago,
1263
01:23:08,783 --> 01:23:11,185
turned shackleton into a legend.
1264
01:23:11,587 --> 01:23:14,721
Shackleton resonates today
1265
01:23:14,823 --> 01:23:18,759
because of keeping
his men together,
1266
01:23:18,860 --> 01:23:22,429
keeping morale up,
doing the impossible
1267
01:23:22,530 --> 01:23:24,331
and then saving them.
1268
01:23:24,432 --> 01:23:26,000
That's endurance.
1269
01:23:27,869 --> 01:23:30,970
Whenever I'm out there
in a tricky situation,
1270
01:23:31,073 --> 01:23:34,640
climbing or where things
might not be going my way,
1271
01:23:35,211 --> 01:23:39,579
I take a bit of shackleton
and I plug it in and I'm, like,
1272
01:23:39,681 --> 01:23:42,983
"yeah, sir ernest shackleton,
1273
01:23:43,519 --> 01:23:46,552
"he would persevere."
1274
01:23:46,921 --> 01:23:50,990
and that is the power
of Shackleton's story.
1275
01:23:56,032 --> 01:23:58,798
On the hunt
for Shackleton's wreck,
1276
01:23:58,900 --> 01:24:00,545
the crew has battled
the same conditions
1277
01:24:00,569 --> 01:24:03,871
faced by the endurance,
1278
01:24:03,972 --> 01:24:06,305
broken through to one of
the most remote places
1279
01:24:06,408 --> 01:24:10,944
on the planet, and
explored for the first time,
1280
01:24:11,046 --> 01:24:14,014
the ship's final resting ground
on the sea floor.
1281
01:24:18,054 --> 01:24:20,587
For the expedition,
getting this close to the wreck
1282
01:24:20,689 --> 01:24:22,989
is a major feat of exploration.
1283
01:24:24,159 --> 01:24:28,462
And while the onset of winter
marks the end of this season,
1284
01:24:28,564 --> 01:24:30,730
the team plans to return.
1285
01:24:30,832 --> 01:24:33,033
If there's an opportunity
to come back
1286
01:24:33,135 --> 01:24:36,002
and search for it again,
I'm gonna be first on the list.
1287
01:24:37,840 --> 01:24:38,850
Hopefully we'll find the auv
1288
01:24:38,873 --> 01:24:41,007
and Shackleton's ship
in the same spot.
1289
01:24:42,978 --> 01:24:45,712
I always said this was
the greatest wreck hunt
1290
01:24:45,814 --> 01:24:48,247
that there's ever been
and still is.
1291
01:24:49,118 --> 01:24:52,418
I mean, somewhere beneath
my feet is the endurance.
1292
01:24:52,520 --> 01:24:53,987
And do you know what?
1293
01:24:54,457 --> 01:24:55,889
It isn't over yet.
1294
01:24:55,990 --> 01:24:58,292
To be able to go down
and find it and locate it
1295
01:24:58,394 --> 01:24:59,960
and document it,
1296
01:25:00,061 --> 01:25:04,030
would be a closure for
this whole endurance story.
1297
01:25:04,132 --> 01:25:06,966
Though polar ice has forced the
team to retreat for now,
1298
01:25:07,069 --> 01:25:08,546
they are determined to one day
return and find at last
1299
01:25:08,570 --> 01:25:12,472
shackelton's lost ship.
1300
01:25:12,574 --> 01:25:15,576
I'm laurence fishburne,
thanks for watcing
1301
01:25:15,677 --> 01:25:18,011
history's greatest mysteries.
101424
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