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NARRATOR: The China Seas.
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00:00:12,840 --> 00:00:16,720
Ringed by the countries
of southeast Asia,
these are some of the
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00:00:16,760 --> 00:00:19,560
most fiercely contested
waters on earth.
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00:00:24,840 --> 00:00:29,160
Beneath the waves,
the shattered remains
of epic battles.
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00:00:29,200 --> 00:00:32,080
JAMES: It's as if you took
hundreds of ships and put
them through a blender.
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00:00:33,360 --> 00:00:38,000
NARRATOR:
Mysterious treasures, and
technological wonders all
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hidden from view...
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until now.
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00:00:46,240 --> 00:00:51,120
Imagine if we could
empty the oceans, letting
the water drain away to
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00:00:51,160 --> 00:00:54,480
reveal the secrets
of the sea floor.
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Now, we can.
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Using the latest underwater scanning technology,
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00:01:04,520 --> 00:01:09,760
piercing the deep oceans
and turning accurate
data into 3D images.
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00:01:14,320 --> 00:01:18,240
How did America defeat
the biggest battleship
of World War II?
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JAMES: It was huge.
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It was powerful, it was fast.
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00:01:21,800 --> 00:01:25,000
For the Americans
facing it, it was a
brute of a battleship.
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00:01:25,200 --> 00:01:28,440
NARRATOR: What's the
truth behind the strange
disappearance of the
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00:01:28,480 --> 00:01:32,160
mightiest invasion force
of ancient times?
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00:01:33,520 --> 00:01:36,640
ERIC: One of the biggest
disasters in the history
of maritime warfare.
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00:01:37,200 --> 00:01:41,440
NARRATOR: And how do you
protect the Worldwide Web
from the perils of nature?
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00:02:02,080 --> 00:02:04,440
To compete or collaborate?
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Trade or invade?
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00:02:08,800 --> 00:02:13,080
These twin human
instincts have defined the
China Seas for centuries.
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As these turbulent waters
begin to drain away,
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140 miles south of Japan, they reveal a top-secret battleship.
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The biggest ever put to sea.
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What were its secrets?
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00:02:31,120 --> 00:02:35,120
And why couldn't they save
the lives of 3,000 men?
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00:02:41,040 --> 00:02:46,160
October 1944,
two giant warships sail
towards the biggest
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naval battle in history.
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The mighty Yamato and
its twin, Musashi.
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-The size of the Yamato
is, is breathtaking.
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The Yamato and
its sister ship, Musashi,
were by far the biggest
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battleships ever built.
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00:03:05,040 --> 00:03:09,240
NARRATOR: Almost
900 feet long,
127 feet wide,
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these super battleships
dwarf their opponents.
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00:03:17,280 --> 00:03:21,360
Their hulls are protected
by an incredible
16 inches of armor plate.
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And every part of them
bristles with weapons.
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On the bow, two giant turrets.
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Then over 100 smaller guns.
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Before a third turret.
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They are the biggest
floating fortresses
ever put to sea.
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As the flagship of
the Imperial Japanese Navy,
Yamato carries the seal
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of the Emperor himself.
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A golden chrysanthemum.
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JAMES: Yamato comes from the
term Yamato-Damashii, which is
the national spirit of Japan.
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00:04:06,160 --> 00:04:10,080
It was literally the
embodiment of Japan itself.
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00:04:12,160 --> 00:04:16,720
NARRATOR: Yamato isn't just
big, it's also top secret.
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ERIC: The Japanese took
enormous measures to keep the
Yamato secret from foreign
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00:04:21,760 --> 00:04:27,840
navies, even to the extent of,
of, of putting up a building
so that western naval attaches
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could not see the ship
under construction.
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00:04:31,560 --> 00:04:35,640
NARRATOR: Even Yamato's
commanding officers
aren't told its true size.
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00:04:38,040 --> 00:04:42,720
Its secrets, whatever
they may be, are to be
protected at all cost.
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MARK: And they were
successful in this because
for the entire war,
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the Americans had no
idea of the ship's true
size or the size of the
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guns that she carried.
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00:04:55,520 --> 00:04:59,040
NARRATOR: Japan's secret
battleships are put to the
test in one of the biggest
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naval battles of World War II.
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00:05:06,120 --> 00:05:09,400
Three years after
Japan bombs Pearl Harbor,
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the Pacific War is
about to reach its peak.
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Advancing towards Japan,
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US and Australian forces
launch an invasion
of the Philippines.
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Yamato and Musashi
lead the Japanese fleet
as it tries to stop the
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allies in their tracks.
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The Battle of Leyte Gulf in
October 1944 is the biggest
naval fight in history.
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An epic slugfest of 300 ships.
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ERIC: Leyte Gulf
was the last chance the
Japanese fleet had to stop
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the American advance.
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NARRATOR: Yamato
draws first blood.
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Its big guns batter
the US carrier Gambier Bay,
sending it to the sea floor.
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00:06:07,160 --> 00:06:12,120
The Allies
respond with cannons,
torpedoes and aircraft.
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A massive barrage of
firepower that destroys
26 Japanese ships...
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and damages dozens more.
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MARK: It marked the end
of the Japanese Navy as an
effective fighting force.
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NARRATOR: Yamato is hit...
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but is saved by its
immensely strong armor.
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00:06:35,360 --> 00:06:38,120
Musashi isn't so lucky.
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It sinks under
an onslaught of American
bombs and torpedoes,
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and 1,000
crew members are killed.
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On the brink of defeat,
the Japanese now resort to
a new and shocking tactic.
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They call it kamikaze.
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JAMES: Thousands of young
men dive their aircraft onto
the decks of enemy ships.
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NARRATOR: They believe
that their self-sacrifice
will save Japan.
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But it's not enough to
hold back the US forces.
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After their victory at
Leyte Gulf, the Americans
reached Japan's doorstep,
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the outlying
islands of Okinawa.
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Japan sends Yamato
into battle once again.
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On the 7th of April 1945,
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it powers towards
its destiny.
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With orders to
intercept the invaders
and fight to the death.
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The ultimate kamikaze mission.
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00:08:07,440 --> 00:08:10,720
JAMES: This huge ship,
this ultimate battleship,
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is sent on a one-way
mission to turn itself
into a giant gun battery
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to try to keep the
American ships away.
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00:08:20,200 --> 00:08:23,000
NARRATOR: But Yamato
never makes it to Okinawa.
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The Americans launch a
surprise attack, with
overwhelming force.
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00:08:34,640 --> 00:08:39,000
The super battleship's size
and incredible strength
can't save it this time.
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Two hours after
the first wave of bombs,
the flagship of the
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Imperial Japanese Navy
plunges below the waves.
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00:08:53,040 --> 00:08:57,240
So, what were Yamato's
secrets and why couldn't
they save the ship?
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00:09:02,040 --> 00:09:04,080
Half a century later,
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French and Japanese
wreck explorers set
out to unlock the mystery.
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Sonar readings confirm
wreckage on the seabed
140 miles south of Japan.
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But the ghostly shadow
gives little away.
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They deploy a submarine.
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As it descends into
the darkness, its lights
pick out a strange shape.
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NARRATOR: Could these giant
twisted pieces of metal
really belong to Yamato?
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They search for proof.
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-Yes.
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JAMES: As one who in the world
shipwreck community watched
those first images come back,
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it was striking and powerful.
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00:10:29,000 --> 00:10:32,000
NARRATOR: Amongst
the scattered debris...
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reminders of the fate of
the ship's 3,000 man crew.
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Yamato is Japan's
worst naval tragedy.
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Using detailed sonar
data from this expedition,
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00:10:54,200 --> 00:10:57,440
along with the latest
computer imaging technology,
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00:10:57,480 --> 00:11:01,040
it's possible to drain the
water from the China Seas,
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00:11:03,160 --> 00:11:07,120
to reveal one of the biggest
wreck sites in the world.
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00:11:07,280 --> 00:11:10,720
And finally, discover
the secrets of Yamato.
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00:11:14,280 --> 00:11:18,000
First, the Emperor's seal
comes clearly into view.
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00:11:21,640 --> 00:11:24,240
Then, its gigantic
propellers,
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each stretching
20 feet across.
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00:11:29,760 --> 00:11:34,840
And shockingly, the final
agonies of this mammoth
warship are laid bare.
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It is completely ripped apart.
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JAMES: The violent death
of Yamato and the sprawled
corpse of the battleship,
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makes for a compelling image
because the ship was literally
broken apart into chunks,
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00:12:00,480 --> 00:12:03,120
and that's what you
see on the bottom.
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00:12:06,160 --> 00:12:10,120
NARRATOR: So, what is
Yamato's big secret?
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00:12:11,480 --> 00:12:14,920
Experts scour the site to
appreciate its sheer scale.
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00:12:17,040 --> 00:12:20,240
And the incredible thickness
of its armored hull.
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00:12:24,120 --> 00:12:28,760
But they believe there's
something else still hidden,
and to see it means draining
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not only the ocean,
but the seabed itself.
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00:12:34,200 --> 00:12:37,360
To reveal these.
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00:12:41,120 --> 00:12:45,960
When Yamato was built,
the Allies assumed it was
fitted with 15-inch cannons,
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common on battleships
of the time.
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But they were wrong.
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00:12:53,080 --> 00:12:57,120
Yamato's
cannons are actually
18 inches, the biggest and
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most powerful ever
fitted to a warship.
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00:13:01,280 --> 00:13:05,520
Each can fire a shell
the weight of a car,
for almost 30 miles.
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00:13:10,320 --> 00:13:12,280
JAMES: To have 18-inch
guns on a battleship,
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00:13:12,320 --> 00:13:16,280
means not only do you have
bigger guns than other folks,
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00:13:16,320 --> 00:13:20,240
you have guns that
can shoot farther, you
have guns that can shoot
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00:13:20,280 --> 00:13:22,480
with more punch.
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00:13:24,120 --> 00:13:28,480
So, it's, it's a
tremendous tactical advantage
for the Japanese in the
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00:13:28,520 --> 00:13:30,960
age of the battleship.
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00:13:37,720 --> 00:13:41,280
NARRATOR: Kazushi
Hiro, a Naval Signalman
who served on Yamato,
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recalls their
enormous firepower.
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00:13:47,800 --> 00:13:49,760
KAZUSHI: The sound
was very loud.
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00:13:49,800 --> 00:13:53,200
It felt as if many
thunderbolts struck
the ship all at once.
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00:13:58,480 --> 00:14:02,240
NARRATOR:
But if Yamato had the most
powerful guns on water,
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00:14:02,280 --> 00:14:05,000
why didn't it put
up more of a fight?
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00:14:13,160 --> 00:14:15,960
NARRATOR: The drained
wreck of the world's
biggest battleship reveals
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00:14:16,000 --> 00:14:19,000
dramatic details
of its final battle.
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00:14:21,880 --> 00:14:25,760
Scattered all around,
hundreds of shell casings
from Yamato's own guns.
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00:14:29,120 --> 00:14:33,440
But a closer look
reveals they're not
from its giant cannons.
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00:14:36,160 --> 00:14:39,000
Many of these casings are
from a much smaller weapon.
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00:14:45,240 --> 00:14:50,840
Yamato's cannons are designed
to destroy other battleships
but are of little use against
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00:14:50,880 --> 00:14:53,520
fast moving attack aircraft.
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00:14:58,200 --> 00:15:01,640
It defends itself with
much smaller 25-millimeter
guns that fire shells
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00:15:01,680 --> 00:15:04,520
just over an inch in diameter.
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00:15:04,880 --> 00:15:07,160
But these guns have a problem.
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00:15:08,400 --> 00:15:11,080
ERIC: Unlike British
and American capital ships,
which were armed with
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00:15:11,120 --> 00:15:15,680
40-millimeter weapons,
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00:15:15,720 --> 00:15:17,520
the Japanese had
nothing like that.
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They moved straight from
a five-inch anti-aircraft
gun, to a 25-millimeter
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anti-aircraft gun, and
this made Yamato vulnerable
to torpedo bomber attack.
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00:15:27,480 --> 00:15:31,680
It was a very mediocre
weapon, slow elevation,
slow rate of fire.
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00:15:32,920 --> 00:15:34,680
And it had a lot
of vibrations, so it
was very inaccurate.
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00:15:38,200 --> 00:15:42,280
NARRATOR: Yamato's
underperforming anti-aircraft
guns are no match for an
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00:15:42,320 --> 00:15:45,680
opponent she was never
designed to fight.
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00:15:50,560 --> 00:15:55,000
Swarms of fast moving
attack planes, carrying
bombs and torpedoes,
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00:15:55,040 --> 00:15:58,560
launched from the latest
US aircraft carriers.
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00:16:08,360 --> 00:16:11,600
Each of these holes marks
a successful strike.
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00:16:15,240 --> 00:16:17,640
Enough to cripple Yamato.
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00:16:19,120 --> 00:16:23,160
But the drained remains
of this sunken giant
reveal another mystery.
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00:16:26,000 --> 00:16:29,560
Its 16-inch armor is
shredded like tin foil,
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00:16:30,800 --> 00:16:33,760
and its massive
hull is blown in half.
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00:16:35,240 --> 00:16:38,040
No bomb or torpedo
could have done that.
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00:16:41,840 --> 00:16:46,800
Could it be that Yamato
was ultimately destroyed
by her own secret weapon?
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00:16:51,600 --> 00:16:55,880
Amongst the scattered
debris lies the heart of the
ship's fearsome firepower.
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00:16:58,440 --> 00:17:03,280
This hole is where the forward
18-inch gun turret used
to sit and where shells and
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00:17:03,320 --> 00:17:07,720
propellant were stored
in magazines before being
fed to the cannons above.
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00:17:09,120 --> 00:17:12,240
-This is a potentially very
vulnerable part of the ship.
185
00:17:12,280 --> 00:17:14,520
If fire is introduced
into the magazine,
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00:17:14,560 --> 00:17:17,720
it has the potential to
destroy the entire ship.
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00:17:19,440 --> 00:17:23,000
NARRATOR: A clue
to Yamato's fate comes
from this rare footage.
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00:17:24,840 --> 00:17:29,280
It shows a torpedoed
British World War II
battleship, HMS Barham,
189
00:17:29,320 --> 00:17:32,560
slowly sinking as
it takes on water.
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00:17:33,880 --> 00:17:38,480
As the ship capsizes,
shells begin to tumble from
the magazine racks inside.
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00:17:45,160 --> 00:17:48,440
800 men die.
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00:17:50,560 --> 00:17:55,360
The drained wreck of Yamato
shows how the blast that
rips it apart starts here,
193
00:17:55,400 --> 00:17:59,240
at exactly the position
of the second magazine.
194
00:18:02,720 --> 00:18:06,440
This is one of the last
photographs ever taken
of the super battleship.
195
00:18:08,600 --> 00:18:12,400
Above it, a column
of smoke rises three
miles into the sky.
196
00:18:13,840 --> 00:18:17,120
The result of that final
catastrophic explosion.
197
00:18:19,160 --> 00:18:23,320
-When Yamato blew up, there
was a huge mushroom cloud, a
preview of the mushroom clouds
198
00:18:23,360 --> 00:18:26,680
that would very soon appear
over Hiroshima and Nagasaki,
199
00:18:27,120 --> 00:18:29,280
bringing the
Pacific War to an end.
200
00:18:31,760 --> 00:18:35,600
NARRATOR: Kazushi Hiro
was assigned to another ship
after his training on Yamato.
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00:18:38,320 --> 00:18:43,480
Now aged 94, he still
prays for his many crew
mates who died that day.
202
00:18:48,920 --> 00:18:52,680
KAZUSHI: Dozens of
the names of my friends are
inscribed on this cenotaph.
203
00:18:54,360 --> 00:19:00,360
I come here to visit their
graves once a week since
I have time and I'm alive.
204
00:19:09,520 --> 00:19:13,440
NARRATOR: Japan's
top-secret battleship was
destined for the sea floor.
205
00:19:15,760 --> 00:19:19,520
Not because of its kamikaze
mission, but its secret
weapons were rendered useless
206
00:19:19,560 --> 00:19:23,320
by the changing nature of war.
207
00:19:25,920 --> 00:19:29,320
-The sinking of
the Yamato was the last
gasp of the battleship.
208
00:19:29,920 --> 00:19:34,280
It demonstrated that unless
you had air cover, you were
very vulnerable to torpedo
209
00:19:34,320 --> 00:19:39,560
attack and therefore the
age of the battleship was
certainly coming to an end.
210
00:19:47,240 --> 00:19:51,240
NARRATOR: The men who
sacrifice themselves on board
Yamato are inspired by an
211
00:19:51,280 --> 00:19:53,880
astonishing event.
212
00:19:54,240 --> 00:19:57,840
From the age of
samurai warriors.
213
00:19:58,080 --> 00:20:03,200
As the China Seas continue
to drain away, extraordinary
evidence emerges,
214
00:20:03,240 --> 00:20:07,040
about an enduring
maritime mystery.
215
00:20:10,000 --> 00:20:15,600
How did the mightiest
invasion fleet of ancient
times vanish without a trace?
216
00:20:16,320 --> 00:20:19,480
-It was one of the biggest
disasters in the history
of maritime warfare.
217
00:20:22,120 --> 00:20:25,080
NARRATOR: Imari Bay, Kyushu.
218
00:20:26,720 --> 00:20:30,280
The southernmost of
Japan's four main islands.
219
00:20:32,480 --> 00:20:37,960
700 years ago, warriors of
the Mongol empire launch
an invasion of Japan here.
220
00:20:44,080 --> 00:20:47,920
Under orders from one
of the most powerful
leaders of all time...
221
00:20:49,200 --> 00:20:52,080
Emperor Kublai Khan.
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00:20:53,640 --> 00:20:57,600
The Emperor is the
grandson of Genghis Khan,
223
00:20:57,640 --> 00:21:02,040
the legendary warrior who
united the nomadic hordes
of the Mongolian plains.
224
00:21:05,240 --> 00:21:09,680
Now leading one of the
largest armies in history,
Kublai Khan continues
225
00:21:09,720 --> 00:21:13,200
to expand the
Mongol empire through China.
226
00:21:14,120 --> 00:21:18,640
He establishes
the city of Beijing
and grows fantastically rich
227
00:21:18,680 --> 00:21:22,120
from a vast trade network.
228
00:21:22,160 --> 00:21:26,200
His power over life
and death stretches from
Europe to the China Seas.
229
00:21:27,480 --> 00:21:30,640
But the Great Khan
isn't satisfied.
230
00:21:32,480 --> 00:21:35,120
-Kublai Khan was expanding
the Mongol empire eastwards.
231
00:21:35,160 --> 00:21:39,120
He made himself Emperor
of China, he made Korea
into a vassal state,
232
00:21:39,160 --> 00:21:41,720
and now it was Japan's turn.
233
00:21:42,280 --> 00:21:46,200
NARRATOR: Standing
against the Khan are the
samurai warlords of Japan.
234
00:21:47,240 --> 00:21:51,200
And in 1281, he
decides to reckon with
them once and for all.
235
00:21:53,200 --> 00:21:57,280
He constructs the largest
fleet ever seen and
sends it across the sea.
236
00:21:59,360 --> 00:22:03,520
JAMES: Imagine what it
must have felt like if you
were a Japanese standing
237
00:22:03,560 --> 00:22:06,080
on the shores there?
238
00:22:06,440 --> 00:22:12,080
All of a sudden, what you're
seeing is a wall of ships
as far as your eye can see.
239
00:22:20,400 --> 00:22:23,040
-The Mongol fleet was huge,
240
00:22:23,080 --> 00:22:26,160
getting on for 4,000 vessels
of various shapes and sizes.
241
00:22:27,600 --> 00:22:30,080
It was probably
the biggest amphibious
operation before the
242
00:22:30,120 --> 00:22:33,120
Normandy D-Day
landings in 1944.
243
00:22:38,080 --> 00:22:41,400
NARRATOR: The samurais
fight bravely, and
try to hold the line,
244
00:22:42,920 --> 00:22:45,880
but are hopelessly
outnumbered.
245
00:22:51,080 --> 00:22:54,400
As the first wave of
invaders battles on shore,
246
00:22:54,440 --> 00:22:57,360
more are approaching
from the sea.
247
00:22:58,640 --> 00:23:02,000
But then, something
astonishing happens.
248
00:23:03,400 --> 00:23:08,040
The massive fleet of Mongol
ships mysteriously vanishes.
249
00:23:10,240 --> 00:23:14,160
-The loss of Kublai Khan's
invasion fleet, getting
on for 4,000 ships,
250
00:23:14,200 --> 00:23:17,560
was one of the biggest
disasters in the history
of maritime warfare.
251
00:23:21,240 --> 00:23:23,600
NARRATOR: So, what happened?
252
00:23:23,640 --> 00:23:27,160
Japanese scribes credit
divine intervention.
253
00:23:30,280 --> 00:23:35,720
Historians, archaeologists,
and divers scour the seabed
and pore over the archives.
254
00:23:38,320 --> 00:23:41,280
But fail to discover
a single shipwreck.
255
00:23:42,720 --> 00:23:44,240
Until now.
256
00:23:52,920 --> 00:23:56,800
NARRATOR: Fascinated with the
legend of Kublai Khan's fleet,
257
00:23:56,840 --> 00:24:01,040
maritime archaeologist
Kenzo Hayashida has
spent years searching for it.
258
00:24:05,960 --> 00:24:12,040
KENZO: I have committed myself
to the survey since 1988,
so for more than 30 years.
259
00:24:16,160 --> 00:24:20,080
NARRATOR: Kenzo is inspired
by an ancient Japanese
record of the invasion.
260
00:24:22,080 --> 00:24:24,880
It's only brought out
on very rare occasions.
261
00:24:37,720 --> 00:24:41,000
NARRATOR: The scroll clearly
shows hand to hand combat.
262
00:24:41,840 --> 00:24:44,480
And even the missing ships.
263
00:24:46,240 --> 00:24:51,000
But it makes no mention of
divine intervention plunging
the fleet to the sea floor.
264
00:24:55,640 --> 00:24:59,200
But under the waters of Imari
Bay there are some clues.
265
00:25:01,640 --> 00:25:06,360
A Mongol helmet, buckles,
even an ancient comb.
266
00:25:06,720 --> 00:25:10,240
And then, this.
267
00:25:10,280 --> 00:25:14,160
A bronze seal inscribed
with a date, 1277.
268
00:25:15,440 --> 00:25:21,480
Struck just four years before
the Mongol invasion and it
carries the mark of a soldier,
269
00:25:22,320 --> 00:25:25,120
a very important soldier.
270
00:25:25,160 --> 00:25:30,120
IKUHIRO: It was an official
seal of a company commander
in the Mongolian army,
271
00:25:30,160 --> 00:25:33,200
and the discovery became
important evidence.
272
00:25:35,200 --> 00:25:39,200
NARRATOR: It's
the strongest proof yet of
the Mongol invasion fleet.
273
00:25:40,120 --> 00:25:44,160
JAMES: In terms of a smoking
gun in archaeology, it doesn't
get much better than that.
274
00:25:47,160 --> 00:25:50,040
NARRATOR: Inspired
by the find, Kenzo
takes to the water.
275
00:25:52,160 --> 00:25:55,200
Layers of thick mud make
searching here very difficult.
276
00:25:58,640 --> 00:26:03,040
But when he starts dredging
the sea floor itself, he
makes his first breakthrough.
277
00:26:07,760 --> 00:26:11,160
-What we found were mostly
goods carried on the ships.
278
00:26:11,680 --> 00:26:16,080
For example, weapons,
armor and pots to put food in.
279
00:26:18,200 --> 00:26:21,280
NARRATOR: But still,
where are all the ships?
280
00:26:22,640 --> 00:26:27,080
Kenzo and his team need
to find a way to peer
even deeper into the mud.
281
00:26:28,560 --> 00:26:31,160
And for that, they
turn to technology.
282
00:26:51,280 --> 00:26:53,560
NARRATOR: Based on this data,
283
00:26:53,600 --> 00:26:58,160
draining the coast of
southern Japan slowly reveals
something spectacular.
284
00:27:01,200 --> 00:27:04,200
First, some fragments
of broken timbers.
285
00:27:08,320 --> 00:27:12,480
But then, blowing away
centuries of silt...
286
00:27:14,760 --> 00:27:19,080
exposes the original
seabed of 1281.
287
00:27:21,960 --> 00:27:28,000
And there, resting on top
of it, visible for the
first time in 700 years,
288
00:27:30,240 --> 00:27:35,440
the extraordinary tangled
remains of Kublai Khan's
lost invasion fleet.
289
00:27:52,480 --> 00:27:55,760
NARRATOR: And the drained
seabed reveals something else.
290
00:27:57,680 --> 00:28:02,120
-And there, much like you
would see from a crash
site of an aircraft,
291
00:28:02,160 --> 00:28:06,080
you see fragments of
ships lying everywhere.
292
00:28:09,120 --> 00:28:13,960
NARRATOR: Amongst the
debris, weapons, pots,
293
00:28:16,240 --> 00:28:19,400
even the bones of
Mongol warriors.
294
00:28:22,600 --> 00:28:25,200
-It's as if you took
hundreds of ships and put
them through a blender.
295
00:28:33,080 --> 00:28:36,680
NARRATOR: What could wreak
such havoc on an entire fleet?
296
00:28:37,720 --> 00:28:41,720
Is this evidence of
the divine intervention
of samurai legend?
297
00:28:43,160 --> 00:28:47,800
The answers lie in the
thousands of wood fragments
scattered across the seafloor.
298
00:28:50,240 --> 00:28:54,160
Using the data from
the sonar scan, like a
giant 3D jigsaw puzzle,
299
00:28:55,960 --> 00:29:01,120
it's possible to rebuild
Kublai Khan's warships,
and it's not what the
300
00:29:01,160 --> 00:29:03,960
archaeologists expect.
301
00:29:05,240 --> 00:29:09,080
Most of these ships
were doomed before
they even set sail.
302
00:29:10,200 --> 00:29:13,360
ERIC: Kublai Khan had great
problems mobilizing a fleet.
303
00:29:13,400 --> 00:29:16,000
There were Korean
vessels, but many of
them were just coastal.
304
00:29:16,040 --> 00:29:18,800
There were Chinese
vessels, but many of them
were just river craft.
305
00:29:19,200 --> 00:29:21,680
They weren't very suitable
for an oceanic invasion.
306
00:29:23,560 --> 00:29:27,000
NARRATOR: Many of the ships
lack one critical feature.
307
00:29:27,040 --> 00:29:29,800
A deep keel.
308
00:29:29,840 --> 00:29:33,600
Meaning they are unstable and
easily swamped in rough seas.
309
00:29:35,160 --> 00:29:37,560
What's more,
they're poorly built.
310
00:30:02,040 --> 00:30:04,480
NARRATOR: But shoddy
construction doesn't
account for the extent
311
00:30:04,520 --> 00:30:06,880
of the devastation.
312
00:30:10,760 --> 00:30:14,840
A clue to
what happened lies 700
miles away, in Tokyo.
313
00:30:17,200 --> 00:30:20,240
This is Japan's
Meteorological Agency.
314
00:30:21,920 --> 00:30:26,120
Its records only
go back to the 1950s,
but in that time,
315
00:30:26,160 --> 00:30:28,920
a clear weather
pattern has emerged.
316
00:30:30,920 --> 00:30:34,680
HIROSHI: Japan is in the
north west Pacific area,
where typhoons develop most
317
00:30:34,720 --> 00:30:36,720
frequently in the world.
318
00:30:39,600 --> 00:30:43,480
NARRATOR: Each year, at
least a dozen typhoons bear
down on the Japanese coast.
319
00:30:48,200 --> 00:30:51,160
One thing about the
Mongol fleet is clear...
320
00:30:52,440 --> 00:30:55,760
it arrives in
late summer of 1281,
321
00:30:56,160 --> 00:30:59,120
in time for typhoon season.
322
00:30:59,680 --> 00:31:03,720
Where wind speeds can
reach 190 miles per hour,
323
00:31:03,760 --> 00:31:07,280
generating deadly
waves 40 feet tall.
324
00:31:09,760 --> 00:31:12,680
A wind the Japanese
call, kamikaze.
325
00:31:15,000 --> 00:31:18,280
JAMES:
Kame for God,
Kaze for wind,
326
00:31:18,320 --> 00:31:22,720
creates a powerful
legend of the Divine
Wind that saved Japan,
327
00:31:22,760 --> 00:31:25,160
or the kamikaze.
328
00:31:27,520 --> 00:31:29,240
NARRATOR: Japan will
evoke the Divine Wind
329
00:31:29,280 --> 00:31:32,920
again on the brink of
defeat in World War II.
330
00:31:35,240 --> 00:31:40,000
It doesn't stop US forces
then, but 700 years earlier,
331
00:31:41,160 --> 00:31:43,040
the original kamikaze smashes
332
00:31:43,080 --> 00:31:46,600
Kublai Khan's poorly
built fleet to pieces.
333
00:31:50,160 --> 00:31:53,040
-Most of the damage would
be due to the typhoon.
334
00:31:55,680 --> 00:31:58,800
NARRATOR: The greatest
army of the age...
335
00:32:00,080 --> 00:32:03,080
powerless in the face
of nature's fury.
336
00:32:10,800 --> 00:32:15,680
As the China Seas
continue to drain away, the
receding water reveals another
337
00:32:15,720 --> 00:32:21,800
maritime mystery just off
the coast of Vietnam, a
vast jumble of shipwrecks
338
00:32:21,840 --> 00:32:24,960
spanning 2,000 years.
339
00:32:25,560 --> 00:32:29,560
What made this stretch
of water one of the most
dangerous in history?
340
00:32:30,200 --> 00:32:34,160
And what extraordinary
treasures lie buried
on the sea floor?
341
00:32:35,400 --> 00:32:37,680
IAN: First time in history,
eyes are looking at this.
342
00:32:44,080 --> 00:32:46,400
NARRATOR: The Cham
Islands, off Vietnam.
343
00:32:47,160 --> 00:32:50,640
Part of a region
known as the coast
that sank 1,000 ships.
344
00:32:54,040 --> 00:32:58,360
Not the ships of
fierce invaders, but
ambitious traders.
345
00:33:01,800 --> 00:33:06,040
Clues to centuries of
bustling commerce are still
found on the sea floor here.
346
00:33:07,960 --> 00:33:12,800
For as long as anyone can
remember, local divers have
been making intriguing finds.
347
00:33:14,080 --> 00:33:16,640
Porcelain and ceramics,
hundreds of years old.
348
00:33:19,480 --> 00:33:24,120
TRAN XA: According to
archaeologists, the object
is considered antique.
349
00:33:24,840 --> 00:33:27,640
It belongs to around the
14th or 15th century.
350
00:33:30,000 --> 00:33:33,600
NARRATOR: In local shops,
recovered ceramics sell for
hundreds of dollars apiece.
351
00:33:35,120 --> 00:33:37,920
Where do these
treasures come from?
352
00:33:37,960 --> 00:33:41,120
And why are they strewn
across the harbor floor?
353
00:33:49,440 --> 00:33:53,120
A research team is scanning
the harbor with the
latest sonar technology.
354
00:33:56,760 --> 00:33:58,760
IAN: If you go to
a beautiful place like
the Mediterranean,
355
00:33:58,800 --> 00:34:01,040
you've got
40 meters visibility.
356
00:34:01,080 --> 00:34:05,400
Here we can be down to half
a meter so this time, the
government has allowed us to
357
00:34:05,440 --> 00:34:09,120
bring remote sensing
equipment, and we're
using side-scan sonar.
358
00:34:11,160 --> 00:34:13,960
First time in history
eyes are looking at this.
359
00:34:15,040 --> 00:34:18,520
NARRATOR: Just minutes
into the search, grainy
images of what could be
360
00:34:18,560 --> 00:34:21,480
wreck sites appear
on the screen.
361
00:34:21,960 --> 00:34:23,280
-Guys, come and
have a look at this.
362
00:34:23,320 --> 00:34:25,640
This is really interesting.
363
00:34:28,560 --> 00:34:30,760
NARRATOR: The team
dives for a closer look.
364
00:34:33,240 --> 00:34:37,440
And in the
gloom, a field of broken
ceramics slowly emerges.
365
00:34:42,120 --> 00:34:47,760
They scour a total area of
four square miles and what
they find is extraordinary.
366
00:34:49,120 --> 00:34:52,120
-Ooh, hello baby.
367
00:34:56,200 --> 00:34:59,240
NARRATOR: After careful
analysis of the survey data...
368
00:35:00,120 --> 00:35:04,200
it's now possible
to drain the sea
from the Cham Islands.
369
00:35:08,200 --> 00:35:13,080
And remove layers of
sand and mud to reveal
an astounding sight.
370
00:35:15,200 --> 00:35:19,240
A treasure trove of 15th
century Chinese ceramics.
371
00:35:20,440 --> 00:35:26,600
Cups, bowls, plates,
still stacked in neat
rows after 600 years.
372
00:35:31,920 --> 00:35:36,360
Scattered all around are
more wrecks, as many as 30.
373
00:35:39,600 --> 00:35:44,080
-We're talking 2,000
odd years at least of wrecks
that we'll actually have
374
00:35:44,120 --> 00:35:46,360
under the surface here.
375
00:35:47,360 --> 00:35:49,520
NARRATOR: Why so many wrecks?
376
00:35:49,560 --> 00:35:52,560
And why so many
loads of porcelain?
377
00:35:55,080 --> 00:35:58,800
The answer lies in the Cham
Islands' unique position,
378
00:35:58,840 --> 00:36:02,440
at the eastern
end of the world's
greatest trade route,
379
00:36:02,880 --> 00:36:06,560
the Maritime Silk Road.
380
00:36:06,600 --> 00:36:10,920
Stretching from Asia to
the Middle East through to
Constantinople and Europe.
381
00:36:12,920 --> 00:36:18,840
For 1,000 years,
this oceanic superhighway
connects princes and popes,
382
00:36:18,880 --> 00:36:22,040
kingdoms and empires.
383
00:36:22,080 --> 00:36:27,120
JAMES: It thrived because
you had silks, you had spices,
but you also had porcelain.
384
00:36:30,800 --> 00:36:33,600
Chinese porcelains
are beautiful,
they're magnificent.
385
00:36:36,080 --> 00:36:38,960
-It's simply down to the
clays the Chinese had.
386
00:36:39,000 --> 00:36:42,160
They had very,
very white clays and
it was unlike anything
387
00:36:42,200 --> 00:36:45,040
anybody had seen before.
388
00:36:49,080 --> 00:36:51,360
NARRATOR: The drained
harbor of the Cham Islands
389
00:36:51,400 --> 00:36:54,360
reveals yet more
spectacular sights.
390
00:36:55,080 --> 00:36:58,080
A United Nations
of shipwrecks.
391
00:36:59,360 --> 00:37:01,280
A Spanish galleon.
392
00:37:01,320 --> 00:37:04,520
A Chinese junk,
an Arabian dhow.
393
00:37:06,160 --> 00:37:09,680
But why are so many ships
wrecked in such a small area?
394
00:37:11,280 --> 00:37:15,040
-I like to call this
the parking lot theory
because most car accidents
395
00:37:15,080 --> 00:37:17,800
happen when you're
trying to get in and
out of the parking lot,
396
00:37:17,840 --> 00:37:21,240
and the same thing
holds true for harbors.
397
00:37:21,280 --> 00:37:24,800
You have a cluster of ships
trying to get in, get out,
and if the wind changes,
398
00:37:24,840 --> 00:37:27,360
you're blown right up onto
the rocks of the beach.
399
00:37:30,200 --> 00:37:34,160
NARRATOR: Drawn by the
lure of porcelain and silk,
the crews of these ships
400
00:37:34,200 --> 00:37:36,920
all hoped to
make their fortune.
401
00:37:38,200 --> 00:37:41,640
But instead,
they paid the ultimate
price on this congested
402
00:37:41,680 --> 00:37:44,640
and storm-lashed coast.
403
00:37:47,920 --> 00:37:51,320
Today, the China Seas are
still a major trade route,
404
00:37:52,760 --> 00:37:57,120
but it's not porcelain
that's transported
across the seas, it's data.
405
00:37:58,200 --> 00:38:02,760
What was once the Great
Silk Highway, is now an
Information Superhighway.
406
00:38:07,240 --> 00:38:10,120
And just like
the Maritime Silk Road,
407
00:38:10,160 --> 00:38:13,400
this Data Highway
is beset with dangers.
408
00:38:16,440 --> 00:38:20,680
What are the deep-sea
risks to the Worldwide Web?
409
00:38:21,080 --> 00:38:23,160
GRAHAM: In this particular
case, effectively
it was a perfect storm.
410
00:38:31,000 --> 00:38:35,400
NARRATOR: Our love of
the internet knows no bounds,
with demand for data doubling
411
00:38:35,440 --> 00:38:37,360
every two years.
412
00:38:38,360 --> 00:38:41,160
And the biggest
gigabyte gluttons?
413
00:38:41,200 --> 00:38:43,800
Social media and video.
414
00:38:44,960 --> 00:38:47,520
Lots of video.
415
00:38:47,560 --> 00:38:51,400
GRAHAM: Currently, there
are four million views of
YouTube videos per minute.
416
00:38:53,920 --> 00:38:56,840
That is an enormous amount of
data that's being consumed.
417
00:38:58,480 --> 00:39:01,600
NARRATOR: Add to that
the trillions of dollars
in electronic funds
418
00:39:01,640 --> 00:39:05,160
that shuttle between
corporations and banks...
419
00:39:06,160 --> 00:39:11,080
and it amounts to an
astonishing 3.4 petabits
of data that we gobble up,
420
00:39:11,120 --> 00:39:14,280
every 60 seconds.
421
00:39:14,840 --> 00:39:17,680
-And for those who don't
know what a petabit
is, ten to the 15 zeros.
422
00:39:21,680 --> 00:39:26,040
NARRATOR: All that data
has to be stored somewhere,
which we call the cloud.
423
00:39:29,440 --> 00:39:33,200
But data doesn't
travel up into the sky.
424
00:39:34,160 --> 00:39:37,800
It's actually transported
deep below the sea.
425
00:39:40,760 --> 00:39:44,520
Draining all the oceans
reveals the million-mile
network that connects
426
00:39:44,560 --> 00:39:47,600
the Worldwide Web.
427
00:39:50,040 --> 00:39:53,800
Where data shoots
across the sea floor
at the speed of light,
428
00:39:53,840 --> 00:39:57,200
inside vast
arteries of cables.
429
00:39:57,240 --> 00:39:59,120
JAYNE: We talk
about the cloud.
430
00:39:59,160 --> 00:40:05,120
The reality is 98% of
the internet runs over fiber
optic cables under the ocean.
431
00:40:07,080 --> 00:40:10,440
NARRATOR: One of the
busiest and most important
stretches of the internet
432
00:40:10,480 --> 00:40:13,280
is here under the China Seas,
433
00:40:13,320 --> 00:40:17,040
in the Luzon Strait, between
Taiwan and the Philippines.
434
00:40:17,720 --> 00:40:22,840
And like all undersea cables,
this Data Superhighway
is vulnerable to attack.
435
00:40:25,240 --> 00:40:29,280
From the ocean's most
fearsome predator,
biting onto cables...
436
00:40:31,000 --> 00:40:34,960
to entanglements with
even bigger creatures.
437
00:40:36,920 --> 00:40:41,120
This footage shows what
happens when a humpback whale
becomes wrapped in a loose
438
00:40:41,160 --> 00:40:44,280
data cable off the
coast of Norway.
439
00:40:45,720 --> 00:40:50,040
The fire department manages
to free the whale, but
it means cutting the cable,
440
00:40:52,240 --> 00:40:55,720
plunging parts of Scandinavia
into an offline abyss.
441
00:41:01,240 --> 00:41:06,720
To reduce the dangers,
engineers take a course not
open to ancient mariners,
442
00:41:06,760 --> 00:41:11,200
burying precious cables
deep below the seabed.
443
00:41:12,800 --> 00:41:17,440
This delicate work
is performed by a flotilla of
specialized engineering ships,
444
00:41:19,160 --> 00:41:23,840
which slowly unwind enormous
drums of cable that will
stretch for thousands of miles
445
00:41:23,880 --> 00:41:27,040
across the oceans.
446
00:41:28,000 --> 00:41:31,960
But the crucial work,
happens deep below the waves.
447
00:41:39,160 --> 00:41:43,800
Draining the water from
above the ocean bed exposes
the giant machines that
448
00:41:43,840 --> 00:41:47,120
build the Worldwide Web.
449
00:41:47,840 --> 00:41:51,840
A plough, the size of a house,
crawls along the sea floor.
450
00:41:55,040 --> 00:42:00,200
High pressure water
jets help carve a trench
ten feet deep and the
451
00:42:00,240 --> 00:42:03,160
cable is buried inside it.
452
00:42:09,640 --> 00:42:15,040
In the deepest parts of the
ocean, far beyond the reach
of anchors or even whales,
453
00:42:15,080 --> 00:42:19,240
the engineers lay cables
directly on the seabed.
454
00:42:23,240 --> 00:42:28,960
Draining the deepest canyon of
the Luzon Strait reveals the
main data artery that connects
455
00:42:29,000 --> 00:42:35,040
Asia and the West,
19 cables that shuttle
trillions of gigabytes of
456
00:42:35,080 --> 00:42:40,040
data between businesses,
governments, universities,
and stock markets,
457
00:42:42,760 --> 00:42:46,240
all of them lying
exposed and vulnerable.
458
00:42:49,120 --> 00:42:52,040
Graham Evans is
the Managing Director of
a company that plans where
459
00:42:52,080 --> 00:42:55,520
cables are threaded
across the globe's oceans.
460
00:42:57,160 --> 00:43:00,160
-It's not just a flat,
featureless seabed.
461
00:43:02,960 --> 00:43:06,840
Some of it is extremely rugged
and we're having to maneuver
around some of these features.
462
00:43:10,760 --> 00:43:14,080
NARRATOR: His job is to
find the shortest route
from point A to point B.
463
00:43:16,720 --> 00:43:19,960
But avoiding underwater
obstacles mean that
cables converge to what's
464
00:43:20,000 --> 00:43:23,120
known as a Choke Point.
465
00:43:25,200 --> 00:43:29,240
Like the Luzon Strait
and its 19 cables
linking east and west.
466
00:43:31,080 --> 00:43:33,080
-Why is it a choke point?
467
00:43:33,120 --> 00:43:36,440
There are no alternative
routes when you're trying
to go from Asia to the
468
00:43:36,480 --> 00:43:40,040
United States,
or Asia to Japan.
469
00:43:41,520 --> 00:43:46,320
NARRATOR: On December 26, 2006, the choke point becomes choked.
470
00:43:48,040 --> 00:43:50,680
-It was certainly
a, a date that the
industry won't forget.
471
00:43:54,720 --> 00:43:59,120
NARRATOR: At 8:26 pm,
a deep rumble shakes the
seabed of the China Seas,
472
00:44:01,240 --> 00:44:05,000
an earthquake with
a magnitude of 7.1.
473
00:44:13,640 --> 00:44:19,400
In Taiwan, buildings
collapse, two people are
killed, and dozens injured.
474
00:44:22,640 --> 00:44:25,680
But that's not the end
of the devastation.
475
00:44:26,760 --> 00:44:30,680
In the deep canyon of
the Luzon Strait, there's a
second stage to the quake.
476
00:44:33,440 --> 00:44:37,040
A massive underwater
landslide.
477
00:44:39,840 --> 00:44:43,440
-In this particular case,
it was a, effectively
it was a perfect storm.
478
00:44:44,160 --> 00:44:47,200
There had been this huge
build up of sediment at
the head of this canyon,
479
00:44:47,240 --> 00:44:50,080
and it didn't need
much to trigger it.
480
00:44:50,120 --> 00:44:54,160
NARRATOR: Directly in
its path, the data cables
on the canyon floor.
481
00:44:54,720 --> 00:44:57,640
-So, if you're
on the floor of the canyon,
what you would see is this
482
00:44:57,680 --> 00:45:01,080
billowing mass of black mud.
483
00:45:05,880 --> 00:45:09,240
It pretty well took out
every single cable that went
between southeast Asia and
484
00:45:09,280 --> 00:45:11,760
the United States.
485
00:45:19,040 --> 00:45:23,120
NARRATOR: The internet
shuts down and within
minutes millions feel the
486
00:45:23,160 --> 00:45:26,440
pain in their wallets.
487
00:45:26,920 --> 00:45:29,480
-No submarine cables, no cash.
488
00:45:29,880 --> 00:45:31,840
NARRATOR: ATMs stop working.
489
00:45:31,880 --> 00:45:34,160
Stock trading halts.
490
00:45:34,200 --> 00:45:37,560
Billions of dollars of
transactions freeze.
491
00:45:39,840 --> 00:45:43,840
Corporations and banks
are paralyzed on both
sides of the Pacific.
492
00:45:45,120 --> 00:45:48,840
-In this particular case,
there was never so many
simultaneous cable breaks
493
00:45:48,880 --> 00:45:53,600
that had such a devastating
impact on the world's
ability to use the internet.
494
00:45:56,160 --> 00:45:59,080
NARRATOR:
After some frantic work,
data is rerouted via
495
00:45:59,120 --> 00:46:02,440
other networks,
eventually stemming the chaos.
496
00:46:04,640 --> 00:46:08,320
But it takes three
months to fully repair
all the broken lines.
497
00:46:11,560 --> 00:46:14,040
This cable crew
and others like them,
498
00:46:14,080 --> 00:46:17,840
will be busy
for decades to come as the
demand for data continues
499
00:46:17,880 --> 00:46:23,040
to surge, driven by the
booming economies of Asia.
500
00:46:27,560 --> 00:46:31,000
To compete, or collaborate,
trade or invade?
501
00:46:33,080 --> 00:46:36,840
These twin human
instincts continue to
define the China Seas.
502
00:46:41,280 --> 00:46:44,080
Draining the waters here
reveals a turbulent past.
503
00:46:47,080 --> 00:46:50,000
Exposes the truth behind
a mysterious legend.
504
00:46:54,680 --> 00:46:58,320
Celebrates the wonder
of the Worldwide Web.
505
00:47:01,200 --> 00:47:05,600
And whatever's to come in
the next digital revolution.
506
00:47:06,840 --> 00:47:07,720
Captioned by Cotter
Captioning Services.
47011
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