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Would you like to inspect the original subtitles? These are the user uploaded subtitles that are being translated: 1 00:00:02,234 --> 00:00:07,794 History is not an exact science. It is never set in stone. 2 00:00:16,794 --> 00:00:18,194 As time passes, 3 00:00:18,434 --> 00:00:20,674 knowledge of the past is refined and evolves. 4 00:00:29,394 --> 00:00:30,794 But by definition, 5 00:00:30,834 --> 00:00:33,994 received ideas have thick skins and are hard to shift. 6 00:00:49,754 --> 00:00:53,194 To understand the realities of the world, you sometimes have 7 00:00:53,274 --> 00:00:54,994 to shake them up and decipher 8 00:00:55,074 --> 00:00:58,234 the facts by looking at them another way. 9 00:01:16,874 --> 00:01:20,194 Posterity has it that German U-boats were fearsome fighting 10 00:01:20,274 --> 00:01:21,794 machines which ruled the 11 00:01:21,874 --> 00:01:26,154 Atlantic Ocean throughout World War II. But were they? 12 00:01:39,954 --> 00:01:44,394 In February 1939, Hitler personally presented to the world the 13 00:01:44,474 --> 00:01:46,474 new flagship of the German fleet, 14 00:01:46,554 --> 00:01:48,194 the battleship Bismarck. 15 00:02:08,154 --> 00:02:11,234 A fine show of strength to intimidate potential enemies 16 00:02:11,314 --> 00:02:15,194 because, since the dismantling of its fleet after World War I, 17 00:02:15,274 --> 00:02:18,874 Germany had lost its standing as a naval power. 18 00:02:21,314 --> 00:02:24,914 The Fuhrer had clearly broken the Treaty of Versailles, 19 00:02:24,994 --> 00:02:27,834 but rebuilding a Kriegsmarine takes years. 20 00:02:29,114 --> 00:02:31,314 The Bismarck looked impressive, but 21 00:02:31,394 --> 00:02:32,634 could it rule the waves? 22 00:02:34,034 --> 00:02:38,194 Among the Nazi chiefs of staff, a handful of admirals doubted it. 23 00:02:55,594 --> 00:02:58,234 Admiral Erich Raeder, commander-in -chief of the 24 00:02:58,314 --> 00:03:01,034 Kriegsmarine, congratulated himself on 25 00:03:01,114 --> 00:03:04,554 having two giants like the Bismarck and its twin, the Tirpitz, 26 00:03:04,634 --> 00:03:06,554 launched two months later. 27 00:03:11,434 --> 00:03:15,314 Hitler was eager to attack, but the Admiral had to admit 28 00:03:15,394 --> 00:03:16,514 to his subordinates. 29 00:03:17,794 --> 00:03:21,634 "At this moment in time, the Kriegsmarine is clearly 30 00:03:21,714 --> 00:03:23,754 insufficiently armed for the great 31 00:03:23,834 --> 00:03:25,314 combat against Britain." 32 00:03:29,194 --> 00:03:33,554 An opinion shared by his second-in -command, Rear Admiral Karl Donitz. 33 00:03:35,594 --> 00:03:39,074 But Donitz suggested an alternative to a surface conflict. 34 00:03:39,234 --> 00:03:43,914 A plan B, using inexpensive craft which were discreet, 35 00:03:43,994 --> 00:03:46,474 easy to mass-produce, and able to 36 00:03:46,554 --> 00:03:51,594 patrol furtively through the Seven Seas, the Unterseeboots, or U-boats. 37 00:03:56,874 --> 00:03:59,554 This phantom menace strategy wasn't unanimously agreed 38 00:03:59,634 --> 00:04:01,434 upon in the Nazi camp. 39 00:04:01,874 --> 00:04:07,074 Raeder opposed it, and a rivalry was instilled between the two admirals. 40 00:04:17,034 --> 00:04:21,874 On September 1st 1939, Hitler's troops invaded Poland without warning. 41 00:04:28,394 --> 00:04:32,234 The attack was mainly by land, with some backup from a battleship 42 00:04:32,314 --> 00:04:33,794 which decimated the garrisons 43 00:04:33,874 --> 00:04:34,954 in the port of Danzig. 44 00:04:35,354 --> 00:04:37,794 The Kriegsmarine had to prove its strength. 45 00:04:40,674 --> 00:04:43,234 Following the attack on their ally, Poland, Britain and 46 00:04:43,314 --> 00:04:45,474 France declared war on Germany. 47 00:04:48,634 --> 00:04:51,594 That very day, the U -boats made their entrance. 48 00:04:54,514 --> 00:04:58,514 Their orders were to destroy all enemy ships without distinction. 49 00:05:01,554 --> 00:05:03,994 - The biggest war news of these early days has been the 50 00:05:04,074 --> 00:05:05,634 criminal sinking of the Athenia. 51 00:05:05,954 --> 00:05:09,074 The liner, with about 1,400 people on board, was outward bound 52 00:05:09,154 --> 00:05:10,794 across the Atlantic when 53 00:05:10,874 --> 00:05:13,514 without any warning whatsoever, she was torpedoed by a 54 00:05:13,594 --> 00:05:16,594 Nazi submarine 200 miles west of the Hebrides. 55 00:05:17,154 --> 00:05:20,034 These survivors, landing at Greenock en route for Glasgow, 56 00:05:20,114 --> 00:05:21,674 are victims of Hitler's first 57 00:05:21,754 --> 00:05:22,714 crime by submarine. 58 00:05:24,994 --> 00:05:27,634 - Submarines that methodically hunted for victims. 59 00:05:28,754 --> 00:05:31,074 One woman survived to tell the tale. 60 00:05:31,994 --> 00:05:34,914 - About 2 o'clock the next morning, we were drifting around 61 00:05:34,994 --> 00:05:36,834 and spotted the submarine, 62 00:05:37,114 --> 00:05:40,034 it was one of the destroyers come to our rescue. 63 00:05:40,434 --> 00:05:43,994 And we turned around and tried to drift away from it, which we did. 64 00:05:44,314 --> 00:05:46,394 And we drifted for about four more hours 65 00:05:46,474 --> 00:05:49,114 when we were finally picked up by the destroyer. 66 00:05:51,194 --> 00:05:53,194 - The death toll, 112. 67 00:05:55,114 --> 00:05:56,954 The affair caused uproar. 68 00:05:57,034 --> 00:05:59,634 It revealed the true face of Nazi Germany, 69 00:05:59,714 --> 00:06:01,634 which disregarded the rules of war 70 00:06:01,714 --> 00:06:04,634 and sent 112 innocent civilians to their death. 71 00:06:09,314 --> 00:06:12,154 The U-boats were already under battle orders, while their 72 00:06:12,234 --> 00:06:14,874 opponents were still unfit for combat. 73 00:06:17,274 --> 00:06:21,194 And on dry land in Europe, there had yet to be any clashes. 74 00:06:26,074 --> 00:06:29,114 The British and French were taking their time to mobilise their 75 00:06:29,194 --> 00:06:31,674 armies when the unthinkable happened. 76 00:06:34,914 --> 00:06:38,074 In mid-October, the British battleship HMS Royal Oak was 77 00:06:38,154 --> 00:06:41,234 torpedoed and sunk in Scapa Flow, 78 00:06:41,314 --> 00:06:44,914 the chief naval base in the Orkneys north of Scotland. 79 00:06:46,954 --> 00:06:50,274 A symbolic place, because it was here that the German fleet 80 00:06:50,354 --> 00:06:52,354 had been scuttled twenty years earlier. 81 00:06:54,354 --> 00:06:56,594 The time for revenge had come. 82 00:07:06,034 --> 00:07:09,874 At the helm of U-47, bearing its emblem of a snorting bull, 83 00:07:09,954 --> 00:07:12,074 the instigator of the sinking 84 00:07:12,234 --> 00:07:13,354 entered into legend. 85 00:07:18,794 --> 00:07:23,714 Described as arrogant and a fanatic Nazi, Captain Gunther Prien was given 86 00:07:23,794 --> 00:07:26,914 a hero's welcome on his return to Germany. 87 00:07:29,874 --> 00:07:34,194 He was decorated with the Iron Cross by Hitler himself. 88 00:07:37,474 --> 00:07:40,474 Submariners became and the new heroes of the Third Reich, 89 00:07:40,554 --> 00:07:43,114 proud to have struck behind enemy lines. 90 00:08:16,954 --> 00:08:19,834 For a long time looked down upon, German submariners 91 00:08:19,914 --> 00:08:21,674 had earned a new status. 92 00:08:22,394 --> 00:08:25,314 Otto Kretschmer, another renowned captain, stated, 93 00:08:27,074 --> 00:08:29,954 "After four years of training, we suddenly felt like 94 00:08:30,034 --> 00:08:31,314 the elite of the Navy." 95 00:08:32,794 --> 00:08:36,474 In a handful of operations, submarines proved they were far 96 00:08:36,554 --> 00:08:39,234 more effective than surface vessels. 97 00:08:41,034 --> 00:08:44,474 Moreover, one of the Kriegsmarine's flagships, the battleship 98 00:08:44,554 --> 00:08:47,234 Graf Spee, was sunk by the Royal Navy. 99 00:08:48,474 --> 00:08:50,914 A slap in the face for Admiral Raeder. 100 00:08:55,514 --> 00:08:58,594 Hitler ordered the construction of an armada of U-boats. 101 00:09:00,074 --> 00:09:02,794 The cost of one Bismarck or Tirpitz could pay for 50 102 00:09:02,874 --> 00:09:05,554 submarines to compose a fleet much 103 00:09:05,634 --> 00:09:07,674 more capable of hassling Allied ships. 104 00:09:11,514 --> 00:09:14,394 Donitz had won the battle against his superior, 105 00:09:14,474 --> 00:09:17,354 but would nonetheless concede, 106 00:09:17,434 --> 00:09:18,994 "In 1939, we weren't ready. 107 00:09:19,194 --> 00:09:23,274 We had only 23 U-boats capable of reaching the Atlantic from Germany." 108 00:09:25,274 --> 00:09:28,954 The French and British had twice as many submarines as the Germans. 109 00:09:30,954 --> 00:09:34,434 But this clear advantage didn't impress the Nazis. 110 00:09:40,154 --> 00:09:43,434 Karl Donitz, a veteran submariner from World War I, 111 00:09:43,514 --> 00:09:45,274 promised his Fuhrer victory. 112 00:09:50,354 --> 00:09:53,114 His plan was to choke the British Isles. 113 00:09:55,594 --> 00:09:59,794 Britain was importing almost 50% of its meat, 70% of its 114 00:09:59,874 --> 00:10:02,714 sugar and 90% of its grain and fats 115 00:10:02,794 --> 00:10:04,914 -22 million tonnes a 116 00:10:04,994 --> 00:10:06,914 year just in foodstuffs. 117 00:10:16,474 --> 00:10:19,474 So it depended heavily on the 8,000 merchant ships that 118 00:10:19,554 --> 00:10:20,834 delivered this produce. 119 00:10:26,874 --> 00:10:30,154 They were prime targets for the U -boats which day by day 120 00:10:30,234 --> 00:10:32,874 chipped away at this vital supply line. 121 00:10:45,634 --> 00:10:49,874 As a result, in March 1940, a famished Britain was forced to 122 00:10:49,954 --> 00:10:52,754 introduce meat rationing as shortages worsened. 123 00:11:00,874 --> 00:11:03,234 Public parks were turned into vegetable patches. 124 00:11:04,994 --> 00:11:08,514 But Germany's tonnage war strategy was beginning to pay off. 125 00:11:09,714 --> 00:11:12,194 British citizens saw their daily lives suffer. 126 00:11:12,994 --> 00:11:15,794 Part of public opinion began to put pressure on the government to 127 00:11:15,874 --> 00:11:17,714 bring an end to the blockade. 128 00:11:18,354 --> 00:11:21,834 Some politicians even suggested negotiating with the enemy. 129 00:11:25,674 --> 00:11:28,354 Only First Lord of the Admiralty Winston Churchill 130 00:11:28,434 --> 00:11:31,674 categorically refused to make a pact with the Devil. 131 00:11:33,394 --> 00:11:35,554 And events were soon to prove him right. 132 00:11:47,034 --> 00:11:49,394 Eight months after the declaration of war, 133 00:11:49,474 --> 00:11:50,954 ground combat began. 134 00:11:54,554 --> 00:11:58,834 Within just six weeks, the French army was swept aside by the Wehrmacht. 135 00:12:03,034 --> 00:12:06,754 With this blitzkrieg victory, Germany took over the naval bases 136 00:12:06,834 --> 00:12:08,314 along the French coastline. 137 00:12:08,874 --> 00:12:12,914 From Norway to France, the coasts of Europe were under Nazi control. 138 00:12:13,994 --> 00:12:17,674 The gateways to the Atlantic were now wide open to the U-boats. 139 00:12:28,674 --> 00:12:31,954 Great Britain stood alone in the face of the Third Reich. 140 00:12:35,394 --> 00:12:39,114 In the summer of 1940, the pilots of the Royal Air Force put up 141 00:12:39,194 --> 00:12:40,914 fierce resistance to repeated 142 00:12:40,994 --> 00:12:43,754 attacks from the Luftwaffe in the Battle of Britain. 143 00:12:47,954 --> 00:12:51,394 After three months of aerial combat, Britain inflicted a 144 00:12:51,474 --> 00:12:52,914 first defeat on Germany. 145 00:12:57,594 --> 00:13:00,314 Victory in the skies, but heavy losses at sea. 146 00:13:02,354 --> 00:13:05,994 245 Allied ships were sent to the bottom of the ocean, 147 00:13:06,074 --> 00:13:07,714 that's two wrecks a day. 148 00:13:09,154 --> 00:13:12,114 The Kriegsmarine lost only seven of its submarines. 149 00:13:14,594 --> 00:13:18,114 An unbeatable ratio which led the British war leader to say, 150 00:13:18,194 --> 00:13:21,234 "The only thing that really 151 00:13:21,314 --> 00:13:24,514 frightened me during the war was the U-boat peril." 152 00:13:30,514 --> 00:13:32,554 Donitz's gamble had paid off. 153 00:13:32,714 --> 00:13:34,234 He had the enemy quaking. 154 00:13:36,834 --> 00:13:39,834 In the autumn of 1940, he established his base in the 155 00:13:39,914 --> 00:13:42,714 strategic city of Lorient, 156 00:13:42,794 --> 00:13:45,954 where the U-30 was the first submarine to report. 157 00:13:50,554 --> 00:13:54,074 Docked in Brest, Lorient, and Saint-Nazaire, the U-boats 158 00:13:54,154 --> 00:13:55,874 gained a weaker sea compared to 159 00:13:55,954 --> 00:14:00,354 their former bases in Germany, and also avoided the North Sea 160 00:14:00,434 --> 00:14:01,634 and the Channel, which were 161 00:14:01,714 --> 00:14:03,074 under Royal Navy control. 162 00:14:04,874 --> 00:14:09,234 After one year of war, almost 600 Allied ships had been sunk 163 00:14:09,314 --> 00:14:12,474 against only 38 German submarines. 164 00:14:14,194 --> 00:14:17,514 But an insufficient number to wipe out the British merchant fleet. 165 00:14:19,594 --> 00:14:22,794 With only a dozen operational craft, Donitz needed 166 00:14:22,874 --> 00:14:23,914 to increase pressure. 167 00:14:25,514 --> 00:14:29,394 So he experimented with a tactic which had been maturing for years, 168 00:14:29,474 --> 00:14:30,794 the Wolf Pack. 169 00:14:33,154 --> 00:14:36,114 From then on, U-boats would attack in numbers. 170 00:14:39,514 --> 00:14:43,434 At radio stations dotted along the coasts from Norway to Spain, 171 00:14:43,514 --> 00:14:45,874 the Kriegsmarine decipherers 172 00:14:45,954 --> 00:14:47,754 were able to localise enemy ships. 173 00:14:48,794 --> 00:14:52,354 From his HQ in Lorient, Donitz would send his U-boat packs 174 00:14:52,434 --> 00:14:54,354 to the pinpointed zones. 175 00:15:03,554 --> 00:15:07,354 The moment a convoy was spotted on the horizon, the pack dived. 176 00:15:10,714 --> 00:15:17,874 A lieutenant on the U-224 explained, "We were lurking around like wolves. 177 00:15:17,954 --> 00:15:22,474 Then we attacked, fired our torpedoes, and got out again. 178 00:15:23,994 --> 00:15:25,714 The best fun is to hunt." 179 00:15:32,594 --> 00:15:34,274 Another submariner confessed. 180 00:15:35,794 --> 00:15:38,994 "It was grand fun when we made the attack on the whole convoy. 181 00:15:39,674 --> 00:15:41,474 Everybody picked out their own victim." 182 00:15:45,154 --> 00:15:48,914 It was easy hunting, because when they resurfaced, the wolves were 183 00:15:48,994 --> 00:15:50,514 faster than their targets. 184 00:15:53,594 --> 00:15:56,994 But contrary to the legend which persisted even after the war, 185 00:15:57,074 --> 00:15:58,754 U-boats didn't really 186 00:15:58,834 --> 00:16:01,794 have the true capacity to carry out undersea attacks. 187 00:16:02,954 --> 00:16:07,114 As derivatives of surface ships, they could only perform short dives. 188 00:16:09,874 --> 00:16:13,234 Below the surface, an electric engine took over from its diesel 189 00:16:13,314 --> 00:16:14,834 counterpart, which couldn't 190 00:16:14,914 --> 00:16:15,714 function underwater. 191 00:16:17,514 --> 00:16:20,754 Then, autonomy and speed were considerably reduced, 192 00:16:20,834 --> 00:16:22,794 meaning they could only pursue the 193 00:16:22,874 --> 00:16:24,074 slowest cargo ships. 194 00:16:25,514 --> 00:16:29,114 So it was impossible to launch decisive underwater attacks. 195 00:16:29,314 --> 00:16:32,674 And moreover, their torpedoes had an infuriating tendency 196 00:16:32,754 --> 00:16:34,474 to detonate too early. 197 00:16:38,114 --> 00:16:41,314 Renowned U-boat captain Otto Kretschmer admitted, 198 00:16:42,794 --> 00:16:45,434 "We had the worst torpedoes in the world. 199 00:16:45,514 --> 00:16:47,394 Nearly half of them were deficient." 200 00:16:50,834 --> 00:16:53,954 So the U-boats merely carried out stealth approaches 201 00:16:54,194 --> 00:16:56,834 and once in range of the enemy, resurfaced. 202 00:17:00,634 --> 00:17:02,354 All the pack had to do then 203 00:17:02,434 --> 00:17:04,674 was to pound the defenseless cargo ships. 204 00:17:11,474 --> 00:17:14,234 Submariner Heinz Schaeffer gave this account. 205 00:17:15,234 --> 00:17:16,834 "A tanker breaks in the middle. 206 00:17:18,434 --> 00:17:21,234 Each crew member has permission to look through the periscope. 207 00:17:23,594 --> 00:17:26,074 The powerful ship sinks into the waves. 208 00:17:27,154 --> 00:17:28,394 A poignant vision. 209 00:17:28,874 --> 00:17:31,434 The demon of destruction is at work." 210 00:17:36,114 --> 00:17:38,914 Simultaneous attack by the Wolf Pack meant that several 211 00:17:38,994 --> 00:17:41,754 Allied ships could be sunk in one go. 212 00:17:51,274 --> 00:17:53,394 Ambushes were all the more effective when 213 00:17:53,474 --> 00:17:55,194 carried out after nightfall. 214 00:18:00,914 --> 00:18:04,234 Then the attackers would slip silently away through the dark 215 00:18:04,314 --> 00:18:05,794 waters of the Atlantic. 216 00:18:13,794 --> 00:18:17,154 From Newfoundland to the tip of Ireland, the merchant ships 217 00:18:17,234 --> 00:18:19,794 had to navigate between the wolves. 218 00:18:22,594 --> 00:18:27,274 In convoys of ten to twenty ships, a huge floating target ten 219 00:18:27,354 --> 00:18:28,714 kilometres long by three 220 00:18:28,794 --> 00:18:30,794 kilometers wide, took to sea. 221 00:18:33,194 --> 00:18:37,954 Their orders were, keep your distance, 500 meters between each ship, 222 00:18:38,034 --> 00:18:40,634 never stop, even if another ship is sinking. 223 00:18:48,914 --> 00:18:52,674 On board, life went on, thanks to His Majesty's rum ration, 224 00:18:52,754 --> 00:18:55,114 which kept the sailors' spirits up. 225 00:18:57,034 --> 00:19:00,034 ## 226 00:19:08,394 --> 00:19:10,554 But fear haunted daily life. 227 00:19:13,874 --> 00:19:15,834 Merchant Navy officer John Harvey, 228 00:19:15,914 --> 00:19:18,394 who made 12 Atlantic crossings, recalled: 229 00:19:19,994 --> 00:19:21,954 "We were hopeful rather than scared. 230 00:19:22,834 --> 00:19:26,354 With a cargo of minerals, we slept fully dressed, in the hope 231 00:19:26,434 --> 00:19:28,154 of escaping, because it would 232 00:19:28,234 --> 00:19:30,394 only take three minutes for the ship to sink. 233 00:19:31,154 --> 00:19:35,154 If it was a cargo of explosives, then we slept in pyjamas, 234 00:19:35,234 --> 00:19:37,514 and we were happy if we woke up in the morning." 235 00:19:41,874 --> 00:19:45,234 The Royal Navy dealt with the threat phlegmatically, banking on 236 00:19:45,314 --> 00:19:47,754 ASDIC, the ancestor of sonar, which 237 00:19:47,834 --> 00:19:50,594 could detect a submarine 900 metres away. 238 00:19:57,234 --> 00:20:01,194 The Admiralty believed that corvettes, light, fast destroyers 239 00:20:01,274 --> 00:20:02,914 equipped with depth charges, 240 00:20:02,994 --> 00:20:05,314 were enough to protect the vast convoys. 241 00:20:11,474 --> 00:20:15,674 Churchill called them 'the cheap and nasties'. 242 00:20:15,834 --> 00:20:20,994 Officer John Harvey continued, "My worst memory was sailing by 243 00:20:21,074 --> 00:20:22,754 the survivors of a sinking 244 00:20:22,834 --> 00:20:27,594 corvette and being unable to help, because in a convoy you cannot stop." 245 00:20:33,874 --> 00:20:36,994 The Royal Navy thought that the bigger the convoy, the less 246 00:20:37,074 --> 00:20:38,554 chance of a U-boat attack, 247 00:20:38,834 --> 00:20:41,394 since the ships guaranteed mutual defence. 248 00:20:42,274 --> 00:20:45,034 But the sailors of the Merchant Navy disagreed. 249 00:20:48,154 --> 00:20:52,354 They constantly felt under threat because they were too easy to spot. 250 00:20:58,714 --> 00:21:01,834 Sailing at the speed of the slowest vessel, each cargo 251 00:21:01,914 --> 00:21:03,234 ship became vulnerable. 252 00:21:03,794 --> 00:21:08,114 At 13 km/h it was like crossing the Atlantic on a bicycle. 253 00:21:13,434 --> 00:21:17,314 And the risk increased halfway across, when the naval escort about 254 00:21:17,394 --> 00:21:20,634 turned to provide protection for the next convoy. 255 00:21:20,714 --> 00:21:24,554 A weakness that the Germans had spotted. 256 00:21:30,834 --> 00:21:35,954 On October 5, 1940, Convoy SC-7 left Nova Scotia with 35 257 00:21:36,034 --> 00:21:38,594 ships heading to Liverpool. 258 00:21:43,274 --> 00:21:46,754 A wolf pack of eight U-boats commanded by the ruthless Otto 259 00:21:46,834 --> 00:21:48,794 Kretschmer patiently waited 260 00:21:48,874 --> 00:21:52,514 for the naval escort to leave the convoy before pouncing on their prey. 261 00:22:02,314 --> 00:22:06,194 Only 15 ships made it to England, 20 had been sunk, 262 00:22:06,274 --> 00:22:07,794 including an oil tanker. 263 00:22:08,114 --> 00:22:08,954 A record. 264 00:22:11,154 --> 00:22:13,914 This came on top of another convoy on the same route, also 265 00:22:13,994 --> 00:22:16,114 losing 12 of its ships. 266 00:22:23,914 --> 00:22:28,034 The sinking of 32 ships in 48 hours gave the Wolves their 267 00:22:28,114 --> 00:22:29,794 most impressive victory yet. 268 00:22:32,154 --> 00:22:35,794 Donitz, who commanded the operation in person, was triumphant, 269 00:22:36,354 --> 00:22:39,474 especially as his eight U -boats all made it home intact. 270 00:22:43,594 --> 00:22:46,394 Here, the submariners gloat with a collection of lifebelts 271 00:22:46,474 --> 00:22:49,354 filched from their victims as war trophies. 272 00:22:52,794 --> 00:22:55,634 On the mast of the periscopes, pennants display the 273 00:22:55,714 --> 00:22:57,074 amounts of tonnage sunk. 274 00:22:59,194 --> 00:23:02,114 Rankings were even established between the different crews to 275 00:23:02,194 --> 00:23:03,674 motivate the men based 276 00:23:03,754 --> 00:23:05,554 on who sank the biggest ship. 277 00:23:15,714 --> 00:23:19,954 At this point in the war, Allied convoys had lost 20% of their fleet. 278 00:23:20,394 --> 00:23:26,874 In 1940, 563 ships were sunk against only 23 U-boats. 279 00:23:29,434 --> 00:23:33,114 This striking result, however, didn't have the hoped-for impact. 280 00:23:34,674 --> 00:23:38,874 Despite the tonnage sunk, 80% of cargo ships made it to port, 281 00:23:38,954 --> 00:23:40,434 and the British had been 282 00:23:40,514 --> 00:23:42,394 able to adapt their farming techniques. 283 00:23:43,434 --> 00:23:45,714 Shortages were a thing of the past. 284 00:23:48,034 --> 00:23:53,034 The first lieutenant of the U-32 stated, "The English can hold 285 00:23:53,114 --> 00:23:54,594 out under existing conditions 286 00:23:54,674 --> 00:23:55,394 for years. 287 00:23:55,474 --> 00:23:57,034 You only need to look at the shops." 288 00:23:58,434 --> 00:24:00,514 The U-boat's arms will not break them. 289 00:24:03,754 --> 00:24:06,594 The blockade didn't seem to dampen British spirits. 290 00:24:15,674 --> 00:24:18,914 It was impossible for Admiral Donitz to step up a gear. 291 00:24:19,474 --> 00:24:23,874 He could only send out 35 units at any one time, which wasn't enough. 292 00:24:28,634 --> 00:24:32,474 The U-boats leaving the shipyards only replaced the losses, 293 00:24:32,554 --> 00:24:34,234 and military command refused to 294 00:24:34,314 --> 00:24:35,394 provide extra means. 295 00:24:37,114 --> 00:24:40,874 The Kriegsmarine's requests generally played second fiddle to 296 00:24:40,954 --> 00:24:42,394 those of the Wehrmacht, which 297 00:24:42,474 --> 00:24:44,754 was better represented in the Nazi hierarchy. 298 00:24:45,434 --> 00:24:47,754 And now the commander of the Luftwaffe, Hermann Goring, 299 00:24:47,834 --> 00:24:49,834 was asking for even more. 300 00:24:52,714 --> 00:24:57,154 In early 1941, however, Goring agreed to supply a handful of 301 00:24:57,234 --> 00:24:58,354 reconnaissance planes, 302 00:24:58,434 --> 00:25:00,274 which became the U-Boat's eyes. 303 00:25:04,154 --> 00:25:07,794 With their first collaborations, the U-Boats notched up new successes. 304 00:25:08,914 --> 00:25:11,194 It was the era of the aces. 305 00:25:16,074 --> 00:25:19,154 Victory after victory, new heroes added to the ranks 306 00:25:19,234 --> 00:25:20,514 of legendary captains. 307 00:25:23,474 --> 00:25:27,754 After Gunther Prien, the Bull of Scapa Flow, it was the turn 308 00:25:27,834 --> 00:25:29,594 of Joachim Schepke to shine. 309 00:25:30,914 --> 00:25:33,874 He was even invited to Berlin to tell of his exploits at 310 00:25:33,954 --> 00:25:35,994 the helm of the U-100. 311 00:25:39,394 --> 00:25:45,514 But the king of tonnage was Otto Kretschmer, or 'Silent Otto'. 312 00:25:46,354 --> 00:25:49,754 Responsible for 46 sinkings, the captain of the U-99 313 00:25:49,834 --> 00:25:51,314 was never dethroned. 314 00:25:53,234 --> 00:25:57,314 The Nazi propaganda machine was quick to flaunt its hero's feats. 315 00:26:10,994 --> 00:26:14,594 Omnipresent in the field, the Third Reich's film cameras 316 00:26:14,674 --> 00:26:16,794 magnified each action and gesture. 317 00:26:19,074 --> 00:26:22,434 Unrelentingly, the wolves were portrayed as demigods. 318 00:26:25,354 --> 00:26:29,034 Footage that fuelled a legend which would last for years to come. 319 00:26:33,514 --> 00:26:36,674 In truth, there was little heroism in the U-boat attacks. 320 00:26:39,274 --> 00:26:42,434 The victims were essentially defenceless merchant ships. 321 00:26:49,834 --> 00:26:55,114 One submariner on the U-55 admitted as much, "We sink everything 322 00:26:55,194 --> 00:26:56,394 without previous warning. 323 00:26:56,794 --> 00:26:58,594 But the British must not know that. 324 00:27:00,034 --> 00:27:02,434 We always allow the crew to drown. 325 00:27:02,514 --> 00:27:03,634 What else can you do?" 326 00:27:09,674 --> 00:27:12,034 An order that broke the rules of war. 327 00:27:13,514 --> 00:27:16,754 Most of the victims were civilians left to their sad fate. 328 00:27:19,274 --> 00:27:21,834 The Nazi submariners were pitiless. 329 00:27:22,994 --> 00:27:26,194 At best, they threw some bread and a compass to the wrecked 330 00:27:26,274 --> 00:27:27,834 survivors and wished them good 331 00:27:30,914 --> 00:27:34,314 Nobody was spared. One submariner revealed, 332 00:27:34,394 --> 00:27:40,354 "The BDU sent through -there's a convoy, a children's transport. 333 00:27:40,434 --> 00:27:43,354 The children's transport is so big. 334 00:27:46,714 --> 00:27:48,634 We sank a children's transport. 335 00:27:50,354 --> 00:27:51,154 All are dead." 336 00:28:04,954 --> 00:28:08,514 After 18 months of war, British technology had progressed. 337 00:28:11,074 --> 00:28:15,914 ASDIC could now detect a U-boat two kilometres away, making 338 00:28:15,994 --> 00:28:17,834 counterattacks more effective. 339 00:28:19,794 --> 00:28:21,914 The days of impunity were over. 340 00:28:27,434 --> 00:28:31,514 In March 1941, the U-boat aces were caught unawares. 341 00:28:36,354 --> 00:28:40,794 On March 7th, Gunther Prien, with his record of 30 ships sunk, 342 00:28:40,874 --> 00:28:42,914 disappeared with his U-47. 343 00:28:44,234 --> 00:28:48,634 On the 17th, it was the turn of Joachim Schebke, author of 37 344 00:28:48,714 --> 00:28:50,554 sinkings, to go down with his 345 00:28:50,634 --> 00:28:51,234 U-100. 346 00:28:52,954 --> 00:28:56,634 On the 22nd, Otto Kretschmer was captured southeast of 347 00:28:56,714 --> 00:28:59,354 Iceland having scuttled his U-99. 348 00:29:00,554 --> 00:29:03,154 The Ace of Aces was a prize capture. 349 00:29:07,234 --> 00:29:10,114 In two weeks, the Wolf Pack was decimated. 350 00:29:11,074 --> 00:29:14,074 And for Donitz, the trouble was only just beginning. 351 00:29:18,314 --> 00:29:22,554 In May 1941, one of the Nazi's cipher machines, the famous Enigma, 352 00:29:22,634 --> 00:29:25,834 was delivered to MI6 headquarters 353 00:29:25,914 --> 00:29:26,874 at Bletchley Park. 354 00:29:29,834 --> 00:29:33,274 The machine, along with its instruction manual, came from a 355 00:29:33,354 --> 00:29:35,434 U-boat captured by a British destroyer. 356 00:29:39,354 --> 00:29:43,714 By a twist of fate, it was the man who sank the passenger ship Athenia, 357 00:29:43,794 --> 00:29:46,154 Captain Fritz Julius Lemp, who, 358 00:29:46,234 --> 00:29:48,394 failing to scuttle his U-110, 359 00:29:48,474 --> 00:29:51,994 allowed the British to take the equipment left on board. 360 00:29:56,154 --> 00:30:02,074 Lemp was killed, his crew captured, and his U-boat finally sunk. 361 00:30:04,114 --> 00:30:08,194 The Nazis, unaware of what had happened, didn't change their code. 362 00:30:11,394 --> 00:30:14,634 This event marked a turning point in the intelligence war. 363 00:30:15,194 --> 00:30:18,034 The Nazis' most complex code was broken. 364 00:30:20,514 --> 00:30:24,314 The machine, designed by the British computer scientist Alan Turing, 365 00:30:24,394 --> 00:30:25,834 could decipher the 366 00:30:25,914 --> 00:30:28,314 enemy's messages within 36 hours. 367 00:30:29,514 --> 00:30:33,034 The most important transatlantic convoys were diverted to 368 00:30:33,114 --> 00:30:34,274 protect them from attack. 369 00:30:36,154 --> 00:30:39,474 But sparing all transport would arouse German suspicion. 370 00:30:40,794 --> 00:30:44,394 So the Admiralty sacrificed a number of its ships to maintain 371 00:30:44,474 --> 00:30:45,794 its precious advantage. 372 00:30:51,594 --> 00:30:54,114 But Nazi tactics went unchanged. 373 00:30:54,994 --> 00:30:58,234 The fall of the aces didn't stop the methodical killings. 374 00:30:59,514 --> 00:31:04,194 U-boats sank five times as many cargo ships as German battleships did. 375 00:31:06,074 --> 00:31:08,674 The Commander-in-Chief of the Kriegsmarine, 376 00:31:08,714 --> 00:31:11,354 Admiral Raeder, remained convinced that his 377 00:31:11,434 --> 00:31:13,234 giants still had a role to play. 378 00:31:15,594 --> 00:31:18,794 In May 1941, he deployed his fleet's flagship, 379 00:31:18,874 --> 00:31:22,554 the fearsome Bismarck, for its first Atlantic sortie. 380 00:31:24,234 --> 00:31:28,354 Reputed to be unsinkable, even Churchill called it "the 381 00:31:28,434 --> 00:31:30,234 world's most powerful battleship." 382 00:31:40,874 --> 00:31:44,474 Just one week after setting sail, chased down by the Royal Navy, 383 00:31:44,554 --> 00:31:46,674 it was pounded with almost 384 00:31:46,754 --> 00:31:52,394 3,000 shells and sank, taking down more than 2,000 crewmen with it. 385 00:31:54,754 --> 00:31:57,834 The Bismarck had not survived its first mission. 386 00:32:02,274 --> 00:32:05,274 Hitler ordered all surface vessels back to Germany. 387 00:32:08,394 --> 00:32:11,794 The Third Reich could not rule the waves in regular fashion. 388 00:32:12,354 --> 00:32:16,234 Only the underhand tactics of the U -boats could keep the illusion going. 389 00:32:25,234 --> 00:32:30,474 On June 22, 1941, Germany invaded the Soviet Union, 390 00:32:30,554 --> 00:32:32,714 once again with no prior warning. 391 00:32:38,234 --> 00:32:42,034 German divisions ploughed through Soviet defences at lightning speed. 392 00:32:45,954 --> 00:32:48,194 The Red Army was staring at defeat. 393 00:32:53,314 --> 00:32:57,394 Donitz received orders to deprive the Soviets of all kinds of support. 394 00:33:00,354 --> 00:33:03,634 He dispatched his squadrons towards the Arctic Circle, 395 00:33:03,714 --> 00:33:05,514 where Allied convoys were supplying 396 00:33:05,594 --> 00:33:06,794 the port of Murmansk. 397 00:33:14,714 --> 00:33:18,274 The wolf packs now prowled the Arctic Ocean, one of the most 398 00:33:18,354 --> 00:33:20,074 dangerous and inhospitable 399 00:33:20,154 --> 00:33:21,074 zones on the planet. 400 00:33:26,474 --> 00:33:28,794 On board, the conditions were deplorable. 401 00:33:34,394 --> 00:33:38,194 The extreme cold put sailors' bodies to a severe test. 402 00:33:45,114 --> 00:33:48,754 At this point in the war, U-boats held sway in the seas from 403 00:33:48,834 --> 00:33:50,874 the North Atlantic to the Mediterranean. 404 00:33:56,834 --> 00:33:59,794 They sank more ships than the Allies could produce. 405 00:34:04,594 --> 00:34:06,794 But American industry was ready to step in. 406 00:34:09,514 --> 00:34:12,034 - Of all over America's contributions to Allied victory 407 00:34:12,194 --> 00:34:15,194 a vast shipbuilding program is perhaps the most vital at the moment. 408 00:34:16,434 --> 00:34:19,434 Shall we beat the Axis effort to torpedoe our plans for attack? 409 00:34:20,394 --> 00:34:21,394 The answer is, yes! 410 00:34:29,114 --> 00:34:32,274 In late 1941, the United States became the 411 00:34:32,354 --> 00:34:33,634 arsenal for democracy. 412 00:34:37,994 --> 00:34:41,674 Tanks, planes and munitions were produced at a dizzying 413 00:34:41,754 --> 00:34:43,154 pace to rescue Europe. 414 00:34:49,314 --> 00:34:52,634 The shipyards of Baltimore launched the first Liberty ships, 415 00:34:52,714 --> 00:34:54,354 which inaugurated the longest 416 00:34:54,434 --> 00:34:56,594 production line of ships ever established. 417 00:35:01,994 --> 00:35:05,834 Almost 3,000 ships were mass-produced in record time, 418 00:35:05,914 --> 00:35:08,234 thanks to the ingenuity of American 419 00:35:08,314 --> 00:35:13,074 industrialist Henry J. Kaiser, who introduced Fordism into his shipyards. 420 00:35:19,634 --> 00:35:23,274 This new type of cargo ship symbolized the strength of the 421 00:35:23,354 --> 00:35:24,634 American war industry. 422 00:35:25,434 --> 00:35:29,514 Extremely fast to construct, it could carry up to 10,000 tons of 423 00:35:29,594 --> 00:35:31,594 equipment, jeeps, locomotives, 424 00:35:31,794 --> 00:35:34,354 tanks, and planes, and be transformed into an 425 00:35:34,434 --> 00:35:36,634 oil tanker or troop ship. 426 00:35:40,754 --> 00:35:44,274 It sailed at 20 kilometres an hour, sufficiently fast to 427 00:35:44,354 --> 00:35:45,514 escape from the U-boats. 428 00:35:46,674 --> 00:35:50,074 On board, 35 gunners kept a constant lookout. 429 00:35:51,514 --> 00:35:54,114 Nazi military command didn't expect to see such 430 00:35:54,194 --> 00:35:55,554 an armada spring up. 431 00:35:56,714 --> 00:35:59,954 And another event would soon change the balance of power. 432 00:36:05,994 --> 00:36:10,234 On December the 7th, 1941, the Japanese attack on Pearl 433 00:36:10,314 --> 00:36:12,834 Harbor brought the United States into the war. 434 00:36:14,754 --> 00:36:17,674 Hitler could finally have a stab at Uncle Sam. 435 00:36:19,834 --> 00:36:22,554 Donitz dispatched his U-boats to attack the 436 00:36:22,634 --> 00:36:25,114 United States in Operation Drumbeat. 437 00:36:26,674 --> 00:36:27,474 The objective? 438 00:36:28,034 --> 00:36:30,954 To cut off the supply of Texan oil to Europe. 439 00:36:32,794 --> 00:36:35,594 The wolf packs were put under increased strain. 440 00:36:35,834 --> 00:36:40,394 The American coast lay 5,500km from Lorient, 441 00:36:40,474 --> 00:36:43,314 a distressing voyage for the submariners. 442 00:36:49,354 --> 00:36:53,594 In the spring of 1942, American waters were infested with Nazi 443 00:36:53,674 --> 00:36:55,594 U-boats, so close to shore 444 00:36:55,674 --> 00:36:59,394 that at night time, the crewmen could admire the nearby city lights. 445 00:37:07,994 --> 00:37:13,354 Donitz noted, "Our boats soon discovered the best way to proceed. 446 00:37:14,754 --> 00:37:19,434 During the day, they rested between 50 and 150 meters deep on 447 00:37:19,514 --> 00:37:21,114 the bottom, a few nautical 448 00:37:21,194 --> 00:37:22,474 miles from the cargo route. 449 00:37:25,194 --> 00:37:29,354 At dusk, they approached the coast and surfaced once night had fallen." 450 00:37:35,154 --> 00:37:39,354 The American coasts became akin to a fairground turkey shoot, made 451 00:37:39,434 --> 00:37:41,234 all the easier by the incompetence 452 00:37:41,314 --> 00:37:42,594 of US naval command. 453 00:37:45,034 --> 00:37:48,394 The Commander-in-Chief of the Navy, Admiral Ernest J. King, 454 00:37:48,474 --> 00:37:50,234 obsessed with the war against 455 00:37:50,314 --> 00:37:52,914 Japan didn't take the U -boat threat seriously. 456 00:37:57,674 --> 00:38:01,074 Despite warnings from the British, King stubbornly refused to 457 00:38:01,154 --> 00:38:03,794 form convoys, which he considered pointless 458 00:38:07,594 --> 00:38:10,754 A stance which infuriated his highest-placed peers. 459 00:38:12,474 --> 00:38:17,474 In his journal, an exasperated General Eisenhower wrote 460 00:38:17,554 --> 00:38:19,234 "One thing that might help win this 461 00:38:19,314 --> 00:38:21,194 war is to get someone to shoot King." 462 00:38:24,194 --> 00:38:25,074 The outcome? 463 00:38:25,394 --> 00:38:29,274 The 30 or so U-boats lying off the U.S. coasts sank more 464 00:38:29,354 --> 00:38:31,634 than 500 ships in six months. 465 00:38:32,874 --> 00:38:37,394 One ship's captain recounted, "I fished out wreck survivors 466 00:38:37,474 --> 00:38:39,154 choking on fuel spillage. 467 00:38:39,794 --> 00:38:43,074 Once I fished out a woman whose torso was cut in two." 468 00:38:48,674 --> 00:38:50,514 And Canada wasn't spared. 469 00:38:51,354 --> 00:38:55,314 U-boats sneaked into the mouth of the St Lawrence River, the 470 00:38:55,394 --> 00:38:57,234 departure point for many convoys. 471 00:38:59,754 --> 00:39:03,994 Cargo ships were sunk under the very noses of the Royal Canadian Navy. 472 00:39:08,394 --> 00:39:11,554 Citizens were ordered to caulk their windows and cover their 473 00:39:11,634 --> 00:39:13,834 car headlamps with opaque plaster. 474 00:39:16,074 --> 00:39:18,434 Contrary to what we think, Americans were also 475 00:39:18,514 --> 00:39:20,514 victims on home soil. 476 00:39:32,034 --> 00:39:35,554 1942 would be the year of the greatest U-boat successes, 477 00:39:40,234 --> 00:39:43,474 1,322 sinkings for the loss of 478 00:39:43,514 --> 00:39:45,234 just 84 U-boats. 479 00:39:47,394 --> 00:39:51,194 For each submarine lost, the Kriegsmarine sent 16 Allied 480 00:39:51,274 --> 00:39:53,474 ships to the bottom of the ocean. 481 00:40:00,154 --> 00:40:03,794 And every month, 20 new vessels joined the Wolf Pack. 482 00:40:05,034 --> 00:40:08,914 Donitz finally had more than a hundred U-boats on active duty. 483 00:40:13,954 --> 00:40:17,474 In January 1943, Hitler appointed Donitz 484 00:40:17,554 --> 00:40:20,074 Admiral-in -Chief of the Kriegsmarine. 485 00:40:22,034 --> 00:40:24,754 Raeder was forced to give up his position to the 486 00:40:24,834 --> 00:40:27,074 indefatigable promoter of U-boats. 487 00:40:32,914 --> 00:40:38,994 This savoured his triumph, but he took command at the very worst moment. 488 00:40:44,434 --> 00:40:47,914 Early in 1943 came the turning point of the war. 489 00:40:48,234 --> 00:40:50,674 The Nazis were retreating on every front. 490 00:40:53,874 --> 00:40:59,154 In the Atlantic, the Allies now had 800 warships escorting the convoys, 491 00:40:59,234 --> 00:41:01,874 the means to foil the 492 00:41:01,954 --> 00:41:06,594 Phantom Menace, a strike force equipped with the latest 493 00:41:06,674 --> 00:41:08,914 scientific advances, providing 494 00:41:09,154 --> 00:41:11,674 decisive assets in anti-submarine warfare. 495 00:41:16,674 --> 00:41:20,274 Since 1942, the US Navy had been perfecting a system 496 00:41:20,354 --> 00:41:21,834 invented by the British. 497 00:41:23,314 --> 00:41:26,634 Radar, a crucial technological advance. 498 00:41:29,114 --> 00:41:32,234 The new compact models, fitted into the noses of reconnaissance 499 00:41:32,314 --> 00:41:34,394 aircraft, covered a radius 500 00:41:34,474 --> 00:41:37,954 of 300 kilometres compared to the previous 35. 501 00:41:40,314 --> 00:41:43,594 German submariner Heinz Schaeffer regretfully admitted, 502 00:41:45,114 --> 00:41:48,834 "They now have the ability to detect us in any kind of 503 00:41:48,914 --> 00:41:50,794 weather, in the rain, the fog 504 00:41:50,874 --> 00:41:53,274 or at night, when we're at the surface. 505 00:41:54,514 --> 00:41:58,314 Our means of attack have diminished, our losses are increasing. 506 00:41:58,994 --> 00:42:01,314 Maybe our command underestimated the 507 00:42:01,394 --> 00:42:02,794 capabilities of radar." 508 00:42:08,434 --> 00:42:11,914 Detection which made surfacing an act of suicide. 509 00:42:15,154 --> 00:42:17,994 U-boats could no longer hide or communicate. 510 00:42:20,674 --> 00:42:24,154 The conversations were picked up by a new system called huff-duff, 511 00:42:24,194 --> 00:42:26,074 which could locate 512 00:42:26,194 --> 00:42:27,874 the origin of a radio wave. 513 00:42:30,234 --> 00:42:34,074 With huff-duff, any ship within a range of 30 kilometres was 514 00:42:34,154 --> 00:42:35,514 immediately spotted. 515 00:42:40,954 --> 00:42:43,994 Without communication, the wolves could no longer coordinate, 516 00:42:44,074 --> 00:42:46,074 bringing an end to hunting 517 00:42:46,154 --> 00:42:46,754 as a pack. 518 00:42:48,834 --> 00:42:52,554 An officer at Donitz's headquarters admitted, 519 00:42:52,634 --> 00:42:55,394 "The enemy has every asset in hand. 520 00:42:56,314 --> 00:42:59,994 He knows all our secrets, while we know none of his." 521 00:43:09,714 --> 00:43:13,114 As well as detection tools, weapons had also evolved. 522 00:43:15,914 --> 00:43:18,514 Fully fitted with radar, reconnaissance planes were also 523 00:43:18,594 --> 00:43:21,874 equipped with Mark 24 mines, highly 524 00:43:21,954 --> 00:43:25,834 accurate acoustic anti-ship torpedoes. 525 00:43:33,394 --> 00:43:37,434 And thanks to new powerful spotlights, U-boats were visible at 526 00:43:37,514 --> 00:43:38,874 night as if it was day. 527 00:43:40,434 --> 00:43:43,074 Hunting now took place 24 hours a day. 528 00:43:45,354 --> 00:43:47,394 Submariner Heinz Schaeffer conceded. 529 00:43:49,874 --> 00:43:53,594 "The submarine doesn't have time to activate its anti-aircraft defences. 530 00:43:54,274 --> 00:43:56,594 The gunners are caught in the thick of the action. 531 00:43:58,754 --> 00:44:00,194 The U-boat is lost. 532 00:44:01,834 --> 00:44:04,514 It's rare for a single man to escape death." 533 00:44:10,674 --> 00:44:13,154 Another lethal weapon was the hedgehog. 534 00:44:14,994 --> 00:44:19,154 This device fired 24 spigot mortars ahead of the ship. 535 00:44:23,234 --> 00:44:26,474 This increased the chances of making a hit with newly developed 536 00:44:26,554 --> 00:44:28,074 shells that only exploded 537 00:44:28,154 --> 00:44:28,834 on contact. 538 00:44:32,674 --> 00:44:36,474 Here, pools of spilled fuel form on the surface, as if 539 00:44:36,554 --> 00:44:38,234 they were funeral wreaths. 540 00:44:50,954 --> 00:44:55,914 In 1942 the life expectancy of a U-boat was more than 12 months. 541 00:44:57,034 --> 00:45:00,354 One year later it was no more than 12 weeks. 542 00:45:12,274 --> 00:45:15,674 The Allies had found the riposte and took full advantage. 543 00:45:16,514 --> 00:45:19,874 It was Donitz's turn to taste the bitterness of defeat. 544 00:45:21,114 --> 00:45:25,114 His dream of sinking more ships than the Allies could produce evaporated. 545 00:45:26,034 --> 00:45:30,034 Altogether, the 16 American shipyards were launching one 546 00:45:30,114 --> 00:45:31,714 Liberty ship every day. 547 00:45:36,394 --> 00:45:38,914 The Admiral accepted the obvious conclusion. 548 00:45:39,474 --> 00:45:45,314 On May 24, 1943, he ordered his units to withdraw from the North Atlantic. 549 00:45:48,274 --> 00:45:50,994 But Donitz wasn't one to throw in the towel. 550 00:45:54,514 --> 00:45:57,234 He informed his Wolves of his new strategy. 551 00:45:58,474 --> 00:46:02,234 "We know that the presence alone of our U-boats will occupy two 552 00:46:02,314 --> 00:46:03,594 million of our enemies. 553 00:46:04,354 --> 00:46:07,674 So we must, in spite of everything, dispatch our boats to 554 00:46:07,754 --> 00:46:10,074 distract the enemy, even if they 555 00:46:10,154 --> 00:46:11,594 never sink another ship." 556 00:46:15,554 --> 00:46:18,754 15 U-boats entered the North Atlantic to simulate the 557 00:46:18,834 --> 00:46:20,554 presence of several wolf packs. 558 00:46:21,674 --> 00:46:25,314 Donitz staked everything on his most experienced captains. 559 00:46:30,874 --> 00:46:32,234 It was a wasted effort. 560 00:46:32,434 --> 00:46:35,474 The last wolves were sunk one by one. 561 00:46:40,074 --> 00:46:43,234 The crewmen weren't unaware of the fate awaiting them. 562 00:46:44,674 --> 00:46:49,194 They lamented, "All of these U -boat sorties are now suicidal." 563 00:46:50,714 --> 00:46:55,194 In 1943, 238 U-boats were lost. 564 00:46:58,914 --> 00:47:01,514 First Lieutenant Heinz Schaeffer bemoaned, 565 00:47:02,514 --> 00:47:05,634 "We feel bitter, a curse on this war, 566 00:47:05,834 --> 00:47:09,874 on mankind, on the inventors of submarines, on ourselves." 567 00:47:12,234 --> 00:47:15,194 After four years of war, half of the U -boats had been sent to 568 00:47:15,274 --> 00:47:16,314 the bottom of the ocean. 569 00:47:17,514 --> 00:47:20,954 The surviving units were transformed into life rafts. 570 00:47:23,074 --> 00:47:26,114 The wolves' fangs were well and truly blunted. 571 00:47:32,354 --> 00:47:36,394 Since the Normandy landings, Germany was in its death throes. 572 00:47:39,314 --> 00:47:42,914 Early in 1945, Berlin fell to the Red Army. 573 00:47:45,634 --> 00:47:48,634 On April 30, Hitler committed suicide. 574 00:47:49,834 --> 00:47:53,314 In his last will and testament, he named Donitz as his 575 00:47:53,394 --> 00:47:55,154 successor as head of state. 576 00:47:57,514 --> 00:48:00,994 Donitz announced the news in a nationwide radio address. 577 00:48:26,194 --> 00:48:28,874 The admiral stubbornly refused peace. 578 00:48:31,954 --> 00:48:36,594 To save the Kriegsmarine's honour, he ordered the scuttling of all ships. 579 00:48:37,474 --> 00:48:41,554 232 U-boats were sunk, never to surface again. 580 00:48:47,114 --> 00:48:50,554 A handful of rebel wolves disobeyed and helped themselves to 581 00:48:50,634 --> 00:48:52,834 the last cargo ships of the war. 582 00:48:59,274 --> 00:49:03,394 On May the 4th, Donitz accepted the facts and announced the 583 00:49:03,474 --> 00:49:04,834 capitulation of Germany. 584 00:49:06,914 --> 00:49:10,914 The Wolves surrendered to the victors, but not all of them. 585 00:49:12,274 --> 00:49:15,114 One new type of U-boat was on a secret mission. 586 00:49:16,274 --> 00:49:19,794 Capable of crossing the entire Atlantic underwater, it 587 00:49:19,874 --> 00:49:22,114 patrolled freely, undetectable by radar. 588 00:49:24,274 --> 00:49:27,114 It could easily sink any ships it came across, then 589 00:49:27,194 --> 00:49:28,714 flee in stealth mode. 590 00:49:28,994 --> 00:49:30,514 But the war was over. 591 00:49:32,794 --> 00:49:36,274 This sole prototype was unable to change the course of history. 592 00:49:36,594 --> 00:49:40,114 But it did pave the way for the design of modern submarines. 593 00:49:48,554 --> 00:49:53,034 Of the 40,000 German submariners called to duty, 30,000 of 594 00:49:53,114 --> 00:49:55,034 them remained in the ocean 595 00:49:55,114 --> 00:49:56,834 depths alongside their victims. 596 00:49:57,314 --> 00:50:01,034 A pointless sacrifice, because the destruction of the Allied 597 00:50:01,114 --> 00:50:03,794 merchant fleet was but a pipe dream. 598 00:50:06,434 --> 00:50:09,714 They hadn't banked on the US being able to produce more 599 00:50:09,794 --> 00:50:12,074 ships than the U-boats could destroy. 600 00:50:14,034 --> 00:50:18,314 Faced with the industrial power of Uncle Sam, Donitz was always a loser. 601 00:50:22,114 --> 00:50:26,874 The 153 surviving U-boats were moored in Allied ports or on the 602 00:50:26,954 --> 00:50:28,234 banks of the River Thames. 603 00:50:34,834 --> 00:50:37,834 Churchill had one brought to London, so that the British 604 00:50:37,914 --> 00:50:39,434 people could at last approach 605 00:50:39,514 --> 00:50:44,474 one of the terrifying wolves which had sunk more than 3,500 Allied ships. 606 00:50:54,034 --> 00:50:57,634 In November 1945, the hour of judgment came for 607 00:50:57,714 --> 00:50:59,074 the Nazi war criminals. 608 00:50:59,874 --> 00:51:04,154 At the Nuremberg Trials, Admiral Karl Donitz was at the head of 609 00:51:04,234 --> 00:51:06,634 the list, just behind Hermann Goering. 610 00:51:08,554 --> 00:51:12,954 He was indicted on counts of crimes against peace and war crimes. 611 00:51:14,874 --> 00:51:18,394 With a solid defense, he was sentenced to ten years in prison. 612 00:51:19,874 --> 00:51:22,834 As the instigator of criminal warfare that accounted for 613 00:51:22,914 --> 00:51:25,834 72,000 Allied deaths, half of 614 00:51:25,914 --> 00:51:29,594 which were civilians, Donitz was able to save his image and 615 00:51:29,674 --> 00:51:31,074 convince the tribunal that 616 00:51:31,154 --> 00:51:32,434 he wasn't a Nazi. 617 00:51:33,554 --> 00:51:35,154 A little white lie? 618 00:51:35,754 --> 00:51:38,434 After all, Hitler did name him as his successor. 619 00:51:39,474 --> 00:51:43,394 Whatever the case, he preserved his reputation as an honest 620 00:51:43,474 --> 00:51:47,114 soldier until his death in December, 1980. 52656

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