1
00:00:05,272 --> 00:00:07,106
<i> Narrator: World war I.</i>

2
00:00:08,075 --> 00:00:10,943
<i> A new stealth</i>
<i> weapon brings terror</i>
<i> to the oceans.</i>

3
00:00:12,513 --> 00:00:14,246
Delgado: This is a dirty war.

4
00:00:14,281 --> 00:00:16,849
<i> Narrator: Evidence</i>
<i> of a naval revolution.</i>

5
00:00:16,884 --> 00:00:22,004
<i> Lost for a century</i>
<i> beneath the storm ravaged</i>
<i> seas of the british isles.</i>

6
00:00:27,078 --> 00:00:30,012
<i> Imagine if we could</i>
<i> empty the oceans.</i>

7
00:00:31,782 --> 00:00:36,869
<i> Letting the water</i>
<i> drain away to reveal the</i>
<i> secrets of the sea floor.</i>

8
00:00:38,439 --> 00:00:40,572
<i> Now we can.</i>

9
00:00:41,475 --> 00:00:44,910
<i> Using accurate data and</i>
<i> astonishing technology...</i>

10
00:00:47,548 --> 00:00:51,900
<i> To bring light once</i>
<i> again to a lost world.</i>

11
00:00:56,073 --> 00:01:00,342
<i> Why do three royal navy</i>
<i> warships simply disappear?</i>

12
00:01:00,911 --> 00:01:02,945
Grove: The british
are shocked.

13
00:01:03,214 --> 00:01:06,548
<i> Narrator: How does a</i>
<i> single torpedo change</i>
<i> the course of history?</i>

14
00:01:07,768 --> 00:01:10,402
Eoin: For a shop of
that size to disappear in

15
00:01:10,438 --> 00:01:13,205
Less than 20 minutes
was just incredible.

16
00:01:14,108 --> 00:01:17,576
<i> Narrator: And how</i>
<i> do the allies strike back</i>
<i> in a battle that changes</i>

17
00:01:17,611 --> 00:01:20,279
<i> Naval warfare forever?</i>

18
00:01:22,116 --> 00:01:27,035
(theme music plays).

19
00:01:32,409 --> 00:01:36,245
<i> Today's superpowers prize</i>
<i> one weapon above all others.</i>

20
00:01:42,670 --> 00:01:45,037
<i> The submarine.</i>

21
00:01:54,482 --> 00:01:57,699
<i> The ultimate stealth weapon.</i>

22
00:01:59,036 --> 00:02:01,136
<i> Striking at will.</i>

23
00:02:01,605 --> 00:02:04,706
<i> Delivering its deadly</i>
<i> payload from out of nowhere.</i>

24
00:02:08,045 --> 00:02:12,014
<i> But the rise of the submarine</i>
<i> started a century ago.</i>

25
00:02:17,171 --> 00:02:21,273
<i> It's a story that begins</i>
<i> with a mystery off</i>
<i> the coast of holland.</i>

26
00:02:26,113 --> 00:02:29,281
<i> The corpse of an</i>
<i> enormous ship emerges.</i>

27
00:02:30,234 --> 00:02:32,100
<i> And not just one.</i>

28
00:02:32,136 --> 00:02:35,103
<i> Three broken giants</i>
<i> lie side by side.</i>

29
00:02:36,607 --> 00:02:38,807
<i> How did they get here?</i>

30
00:02:41,045 --> 00:02:42,811
<i> 1914.</i>

31
00:02:42,847 --> 00:02:45,447
<i> Britain and germany go to war.</i>

32
00:02:47,168 --> 00:02:49,768
<i> Britannia has ruled the</i>
<i> waves for centuries.</i>

33
00:02:53,674 --> 00:02:57,509
<i> Her fleet so massive, how</i>
<i> can germany ever hope to win?</i>

34
00:03:11,408 --> 00:03:13,909
<i> Just seven weeks into the war.</i>

35
00:03:14,478 --> 00:03:19,848
Hms aboukir, cressy and
hogue scan the horizon
near the dutch coast.

36
00:03:21,969 --> 00:03:26,672
Their mission seek and
destroy any enemy that dares
to threaten british vessels

37
00:03:27,441 --> 00:03:30,042
Supplying the battle
fields of France.

38
00:03:32,279 --> 00:03:36,315
Grove: It was there
as a screen against serious
german surface attack on

39
00:03:36,350 --> 00:03:38,500
These vital cross
channel supplies.

40
00:03:40,571 --> 00:03:43,205
<i> Narrator: The three</i>
<i> ships are packed with</i>
<i> cutting edge technology.</i>

41
00:03:44,942 --> 00:03:48,844
<i> Among the first ever</i>
<i> protected by super</i>
<i> hardened steel plate.</i>

42
00:03:50,714 --> 00:03:52,981
<i> A whole new</i>
<i> class of warship...</i>

43
00:03:53,701 --> 00:03:55,133
<i> Armored cruisers.</i>

44
00:03:56,337 --> 00:03:58,237
Grove: These are
powerful ships.

45
00:03:58,572 --> 00:04:01,540
They'll blow you out
the water if they see
you on the surface.

46
00:04:01,842 --> 00:04:05,344
They're armed
with twelve 6 inch guns,
two 9.2 inch guns, each.

47
00:04:09,350 --> 00:04:13,302
<i> Narrator: The morning</i>
<i> of September 22nd</i>
<i> is clear and calm.</i>

48
00:04:13,771 --> 00:04:16,038
<i> There's no enemy in sight.</i>

49
00:04:16,507 --> 00:04:19,041
<i> Yet the three cruisers vanish.</i>

50
00:04:21,812 --> 00:04:24,813
<i> Their last communication,</i>
<i> a distress signal.</i>

51
00:04:32,873 --> 00:04:34,673
<i> In the weeks that follow,</i>

52
00:04:34,708 --> 00:04:38,110
<i> Hundreds of bodies wash</i>
<i> up along the dutch coast.</i>

53
00:04:39,079 --> 00:04:43,315
<i> Britain's belief that</i>
<i> her navy is invincible</i>
<i> is rocked to the core.</i>

54
00:04:47,771 --> 00:04:51,440
<i> For a decade,</i>
<i> klaudie bartelink has</i>
<i> been investigating the fate</i>

55
00:04:51,475 --> 00:04:53,775
<i> Of the lost patrol.</i>

56
00:04:55,112 --> 00:04:57,446
<i> Now she's onto something.</i>

57
00:04:58,716 --> 00:05:02,734
Bartelink: So we're 20
miles off the dutch coast,
over there is England,

58
00:05:03,237 --> 00:05:05,437
And over there
is the netherlands.

59
00:05:06,907 --> 00:05:10,642
I try to find the three
cruisers and figure out
what has happened to them.

60
00:05:14,181 --> 00:05:18,000
<i> Narrator: She's on the</i>
<i> last known coordinates</i>
<i> of the three ships.</i>

61
00:05:33,083 --> 00:05:38,470
<i> 115 feet down klaudie</i>
<i> and her dive buddy find</i>
<i> themselves among piles</i>

62
00:05:38,872 --> 00:05:41,139
<i> Of twisted wreckage.</i>

63
00:05:46,613 --> 00:05:48,880
<i> The wreck site is massive,</i>

64
00:05:48,916 --> 00:05:52,367
<i> Stretching for hundreds</i>
<i> of feet into the darkness.</i>

65
00:05:57,574 --> 00:06:03,011
<i> Klaudie's exploration</i>
<i> reveals that there's more</i>
<i> than one vessel here.</i>

66
00:06:06,784 --> 00:06:09,468
<i> And her lights pick</i>
<i> out something else.</i>

67
00:06:14,541 --> 00:06:18,810
<i> Strewn all around shells</i>
<i> still in their casings.</i>

68
00:06:18,846 --> 00:06:21,613
<i> Never fired.</i>

69
00:06:23,117 --> 00:06:25,200
Bartelink: I saw a
lot of ammunition.

70
00:06:25,536 --> 00:06:28,303
I saw here the boxes
with small shells.

71
00:06:29,506 --> 00:06:32,140
It's has to be
a military ship.

72
00:06:33,110 --> 00:06:36,978
And on these coordinates
they're definitely
cressy, hogue or aboukir.

73
00:06:39,817 --> 00:06:44,002
<i> Narrator: A positive id,</i>
<i> but in the gloom it's</i>
<i> difficult to see how</i>

74
00:06:44,037 --> 00:06:46,037
<i> The ships met their end.</i>

75
00:06:48,909 --> 00:06:51,743
Bartelink: It's very
hard to understand the
shape of the ship below

76
00:06:52,546 --> 00:06:54,713
Because you only
see part of the ships.

77
00:06:54,748 --> 00:06:57,399
And you can't recognize
like the bow or something.

78
00:06:57,434 --> 00:06:59,534
It's, it's impossible.

79
00:07:01,672 --> 00:07:05,140
<i> Narrator: High tech sonar</i>
<i> scans provide a solution.</i>

80
00:07:05,175 --> 00:07:07,909
<i> Mapping the wrecks</i>
<i> in perfect detail.</i>

81
00:07:09,780 --> 00:07:13,381
<i> Allowing us to do something</i>
<i> never possible before.</i>

82
00:07:16,270 --> 00:07:20,439
<i> Drain away the</i>
<i> english channel to see</i>
<i> the lost patrol clearly</i>

83
00:07:20,474 --> 00:07:24,075
<i> For the first time</i>
<i> in over 100 years.</i>

84
00:07:37,374 --> 00:07:39,875
<i> The warships</i>
<i> bristle with guns.</i>

85
00:07:39,910 --> 00:07:44,546
<i> Including these, innovative</i>
<i> side mounted weapons</i>
<i> called casement guns.</i>

86
00:07:46,783 --> 00:07:50,635
<i> On the smooth hull</i>
<i> of aboukir there's no</i>
<i> sign of battle damage.</i>

87
00:07:55,709 --> 00:07:58,944
<i> But near the stern</i>
<i> a gaping wound.</i>

88
00:08:02,583 --> 00:08:07,002
<i> On the other two</i>
<i> wrecks fatal blows</i>
<i> also clearly visible.</i>

89
00:08:07,804 --> 00:08:10,805
<i> Hogue's hull is broken open.</i>

90
00:08:11,775 --> 00:08:14,776
<i> Cressy's interior</i>
<i> completely exposed.</i>

91
00:08:16,213 --> 00:08:19,614
<i> Damage like this,</i>
<i> far beneath the waterline,</i>

92
00:08:19,650 --> 00:08:22,300
<i> Is hard evidence that</i>
<i> a terrible new weapon</i>

93
00:08:22,336 --> 00:08:24,202
<i> Is in play.</i>

94
00:08:25,539 --> 00:08:28,473
Bartelink: So what
you see where torpedoes
went into the ships.

95
00:08:29,743 --> 00:08:33,512
And I think this is the
moment that the naval
warfare changed forever.

96
00:08:37,935 --> 00:08:40,669
<i> Narrator: Torpedoes are</i>
<i> self-propelled and deadly.</i>

97
00:08:42,906 --> 00:08:46,508
<i> Flying under the waves they</i>
<i> strike below the waterline.</i>

98
00:08:48,779 --> 00:08:53,215
Delgado: The torpedo, as
initially developed and tested
through the 1860s and 1870s,

99
00:08:54,801 --> 00:08:57,102
Is truly refined,
in world war I.

100
00:09:00,674 --> 00:09:03,775
<i> Narrator: They are</i>
<i> originally fired from ships.</i>

101
00:09:05,012 --> 00:09:08,113
<i> But on the day of the lost</i>
<i> patrol the horizon is empty.</i>

102
00:09:10,417 --> 00:09:13,568
<i> The source of the</i>
<i> torpedoes must lurk unseen.</i>

103
00:09:14,938 --> 00:09:18,607
<i> Unable to defeat the</i>
<i> royal navy's massive battle</i>
<i> fleets on the surface.</i>

104
00:09:20,244 --> 00:09:25,413
<i> The germans are</i>
<i> deploying new technology</i>
<i> under the waves.</i>

105
00:09:27,801 --> 00:09:30,302
<i> They call them,</i>
<i> 'unterseeboote'.</i>

106
00:09:31,305 --> 00:09:33,488
<i> U-boats.</i>

107
00:09:34,875 --> 00:09:38,543
<i> The british cruisers</i>
<i> are completely unprepared.</i>

108
00:09:38,879 --> 00:09:41,580
Grove: What they weren't
expecting was this covert,
underwater attack,

109
00:09:42,416 --> 00:09:45,133
Which is carried
out with great skill.

110
00:09:45,569 --> 00:09:49,004
<i> Narrator: Unfired</i>
<i> ammunition on the sea-bed</i>
<i> shows that the cruisers</i>

111
00:09:49,039 --> 00:09:51,406
<i> Don't put up much of a fight.</i>

112
00:09:51,642 --> 00:09:55,810
<i> By the time they spot</i>
<i> torpedoes running the</i>
<i> battle is already over.</i>

113
00:10:01,435 --> 00:10:04,102
Delgado: U-boats
are a game changer.

114
00:10:05,472 --> 00:10:08,840
<i> Narrator: The way</i>
<i> the drained ships lie</i>
<i> close together reveals</i>

115
00:10:08,875 --> 00:10:10,742
<i> That they were sitting ducks.</i>

116
00:10:15,582 --> 00:10:19,534
<i> As the first goes</i>
<i> down the other two race</i>
<i> in to rescue survivors,</i>

117
00:10:21,672 --> 00:10:23,905
<i> Giving u-boat number nine</i>

118
00:10:23,940 --> 00:10:27,008
<i> The perfect opportunity</i>
<i> to pick them off with ease.</i>

119
00:10:37,070 --> 00:10:39,738
<i> They still lie</i>
<i> where they fell.</i>

120
00:10:40,207 --> 00:10:42,507
<i> Side by side.</i>

121
00:10:46,647 --> 00:10:48,813
Grove: The sinking othe
three cruisers, aboukir,

122
00:10:49,216 --> 00:10:52,100
Hogue and cressy,
demonstrated the power

123
00:10:52,135 --> 00:10:54,069
Of the submarine perhaps
more than anything else.

124
00:10:59,042 --> 00:11:02,977
<i> Narrator: The dutch</i>
<i> authorities bury the british</i>
<i> dead with military honors.</i>

125
00:11:09,803 --> 00:11:11,786
Bartelink: In the
netherlands it was big news.

126
00:11:13,407 --> 00:11:16,307
It was in all newspapers
because in one and

127
00:11:16,343 --> 00:11:22,313
A half hour almost
1500 men died and 13
of them were teenage boys,

128
00:11:23,250 --> 00:11:25,834
So it was
a very big story.

129
00:11:27,871 --> 00:11:30,138
And they were buried
here, honorably.

130
00:11:30,474 --> 00:11:32,640
There were soldiers
along the road,

131
00:11:32,676 --> 00:11:34,776
They paid a lot
of attention to it.

132
00:11:42,602 --> 00:11:46,538
<i> Narrator: U-boats</i>
<i> are so effective because</i>
<i> german engineers have</i>

133
00:11:46,573 --> 00:11:49,374
<i> Overcome some massive</i>
<i> technical challenges.</i>

134
00:11:54,314 --> 00:11:57,999
<i> And how they manage</i>
<i> this can still be seen</i>
<i> because, remarkably,</i>

135
00:11:58,902 --> 00:12:01,803
<i> The very first</i>
<i> u-boat survived.</i>

136
00:12:02,839 --> 00:12:07,575
Koerver: This is u-1,
germany's first submarine,
over 100 years old and

137
00:12:09,579 --> 00:12:14,599
You could make some
5 or 6 hours submerged
with electric engine

138
00:12:14,634 --> 00:12:16,768
At slow speed 5-6 knots.

139
00:12:18,872 --> 00:12:23,508
<i> Narrator: Electric engines</i>
<i> power the 139 foot long</i>
<i> vessel when under water.</i>

140
00:12:25,045 --> 00:12:28,313
<i> Its batteries</i>
<i> are recharged</i>
<i> by 2 gasoline engines,</i>

141
00:12:29,349 --> 00:12:31,533
<i> Which run the</i>
<i> u-boat on the surface.</i>

142
00:12:31,968 --> 00:12:34,702
Koerver: We have two
different pairs of engine.

143
00:12:34,738 --> 00:12:37,705
Two gasoline and
two electric motors,

144
00:12:38,909 --> 00:12:41,142
So it's like a modern
car, a hybrid system.

145
00:12:42,646 --> 00:12:47,699
<i> Narrator: U-1 can dive</i>
<i> to 100 feet and travel</i>
<i> submerged for 50 miles.</i>

146
00:12:49,803 --> 00:12:51,703
<i> But for their crew,</i>

147
00:12:51,738 --> 00:12:54,189
<i> U ats are</i>
<i> unforgiving places.</i>

148
00:12:55,175 --> 00:12:58,610
<i> There's deafening</i>
<i> engine noise, exposed</i>
<i> electrical circuits.</i>

149
00:12:59,579 --> 00:13:05,099
<i> And if sea water gets into</i>
<i> the batteries deadly chlorine</i>
<i> gas will quickly spread.</i>

150
00:13:08,138 --> 00:13:09,671
Mccartney: If you're
serving in submarines,

151
00:13:09,706 --> 00:13:11,406
You've got a higher
change of dying than

152
00:13:11,441 --> 00:13:13,775
You have if you're
on the western front.

153
00:13:14,978 --> 00:13:17,579
<i> Narrator: U-boats maybe</i>
<i> dangerous for their crews,</i>

154
00:13:18,348 --> 00:13:20,682
<i> But they're lethal</i>
<i> to their enemies.</i>

155
00:13:21,168 --> 00:13:24,002
<i> And the germans</i>
<i> have boats almost</i>
<i> three times bigger</i>

156
00:13:24,037 --> 00:13:26,271
<i> Than u-1 on the drawing board.</i>

157
00:13:27,040 --> 00:13:31,109
<i> During 1915 germany</i>
<i> expands its fleet to over 50.</i>

158
00:13:33,547 --> 00:13:35,980
<i> And that's just the start.</i>

159
00:13:36,516 --> 00:13:40,668
Koerver: The climax
was reached with the number
of 125 available submarines,

160
00:13:41,738 --> 00:13:47,208
Means around 30, 40
submarines were at sea daily.

161
00:13:50,547 --> 00:13:54,148
<i> Narrator: And this</i>
<i> expanding u-boat force</i>
<i> doesn't just have military</i>

162
00:13:54,183 --> 00:13:56,701
<i> Targets in its sights.</i>

163
00:13:56,736 --> 00:13:59,537
Grove: There were
elements in the german navy
who quite deliberately wanted

164
00:13:59,573 --> 00:14:02,273
To achieve what
you might call a form
of maritime terrorism.

165
00:14:04,144 --> 00:14:07,712
<i> Narrator: The</i>
<i> killer u-boats target</i>
<i> a world-famous ship in</i>

166
00:14:07,948 --> 00:14:10,748
<i> An attack that</i>
<i> shocks the world.</i>

167
00:14:23,013 --> 00:14:26,648
<i> By 1915, no</i>
<i> allied ship is safe.</i>

168
00:14:26,917 --> 00:14:28,700
<i> Off ireland's southern coast,</i>

169
00:14:28,735 --> 00:14:32,503
<i> Eoin mcgarry</i>
<i> investigates what happens</i>
<i> when the german navy</i>

170
00:14:32,539 --> 00:14:35,106
<i> Dramatically</i>
<i> escalates its campaign.</i>

171
00:14:35,742 --> 00:14:38,476
Eoin: It's under the water,
you can look around, you don't
know where it is,

172
00:14:38,979 --> 00:14:41,112
You don't know where
it's going to attack from.

173
00:14:41,348 --> 00:14:43,381
How do you attack back?

174
00:14:45,735 --> 00:14:49,771
<i> Narrator: U-boats entering</i>
<i> service in the second year</i>
<i> of the war could dive almost</i>

175
00:14:49,806 --> 00:14:54,475
<i> Twice as deep as u-1 and</i>
<i> run submerged for 80 miles.</i>

176
00:14:56,212 --> 00:15:00,281
<i> Increased range means</i>
<i> they can now strike</i>
<i> deep into the atlantic.</i>

177
00:15:02,702 --> 00:15:06,170
<i> And soon the german navy</i>
<i> is making the most of</i>
<i> its killer technology.</i>

178
00:15:16,750 --> 00:15:22,770
<i> Beneath this buoy lies</i>
<i> the wreck of one the most</i>
<i> iconic ships in history and</i>

179
00:15:23,206 --> 00:15:25,039
<i> Its shocking secret.</i>

180
00:15:25,609 --> 00:15:29,110
<i> Eoin is one of a select</i>
<i> few experienced enough</i>
<i> to make the dive.</i>

181
00:15:30,580 --> 00:15:34,866
<i> It's so deep he must</i>
<i> breathe a special mix</i>
<i> of gases to stay alive.</i>

182
00:15:36,736 --> 00:15:41,572
Eoin: It's like the
everest of diving, it's
just within the realms of

183
00:15:42,042 --> 00:15:44,943
Safety and the limitations
of your qualifications.

184
00:15:57,173 --> 00:16:02,043
<i> Narrator: He heads down over</i>
<i> 300 feet into the darkness.</i>

185
00:16:08,635 --> 00:16:13,371
<i> This twisted wreckage is</i>
<i> all that remains of one of</i>
<i> the most luxurious passenger</i>

186
00:16:13,406 --> 00:16:15,540
<i> Liners ever built.</i>

187
00:16:22,248 --> 00:16:26,000
<i> But for over a century</i>
<i> the power of the sea</i>
<i> has taken its toll.</i>

188
00:16:29,572 --> 00:16:35,276
Eoin: On a huge wreck
like 798 foot long it
still lies as a huge hulk

189
00:16:36,112 --> 00:16:37,578
On the sea floor.

190
00:16:37,614 --> 00:16:39,380
It's festooned
with fishing nets,

191
00:16:39,416 --> 00:16:41,799
Discarded fishing nets,
tangled fishing nets.

192
00:16:41,835 --> 00:16:43,868
It's a dangerous dive.

193
00:16:45,739 --> 00:16:49,273
<i> Narrator: It also</i>
<i> hides clues to an</i>
<i> atrocity so shocking,</i>

194
00:16:49,976 --> 00:16:52,744
<i> It changes the</i>
<i> course of the war.</i>

195
00:16:54,381 --> 00:16:57,799
<i> This is the wreck</i>
<i> of rms lusitania.</i>

196
00:17:04,240 --> 00:17:06,474
<i> On may 1st 1915...</i>

197
00:17:07,043 --> 00:17:10,511
<i> Lusitania leaves</i>
<i> new york for britain.</i>

198
00:17:13,783 --> 00:17:16,801
<i> Like her ill-fated</i>
<i> rival titanic,</i>

199
00:17:16,836 --> 00:17:20,505
<i> This massive liner</i>
<i> has been engineered</i>
<i> to be unsinkable.</i>

200
00:17:21,808 --> 00:17:25,243
<i> On board nearly 2000 souls.</i>

201
00:17:26,012 --> 00:17:28,413
Eoin: It was like a
floating 5-star hotel.

202
00:17:28,448 --> 00:17:32,366
In one end of it and
then for the third-class
passengers it was still

203
00:17:32,402 --> 00:17:36,204
A luxurious way and fast
way of crossing the atlantic.

204
00:17:40,810 --> 00:17:42,744
<i> Narrator: Six days later,</i>

205
00:17:42,779 --> 00:17:46,514
<i> Lusitania is just 12 miles</i>
<i> from the irish coast.</i>

206
00:17:48,902 --> 00:17:52,170
<i> Her captain has been</i>
<i> warned that u-boats</i>
<i> are in the area,</i>

207
00:17:53,139 --> 00:17:56,541
<i> But lusitania can</i>
<i> surely outrun any threat.</i>

208
00:17:57,710 --> 00:18:01,646
Eoin: The lusitania
was doing 24 knots
when she was cruising and

209
00:18:02,582 --> 00:18:04,599
If you look off the stern
in the lusitania you could

210
00:18:04,667 --> 00:18:08,803
Put 60 water skiers
across the water and she
could pull water skiers,

211
00:18:09,105 --> 00:18:11,272
She went that fast.

212
00:18:12,509 --> 00:18:14,909
<i> Narrator: So why</i>
<i> does this super liner,</i>

213
00:18:14,944 --> 00:18:18,146
<i> Built to be invincible,</i>
<i> never arrive?</i>

214
00:18:19,983 --> 00:18:21,748
<i> 300 feet down...</i>

215
00:18:21,784 --> 00:18:24,035
<i> Clues are hard to spot.</i>

216
00:18:28,958 --> 00:18:33,978
<i> But feeding precise 3-d</i>
<i> scanning data into powerful</i>
<i> animation software</i>

217
00:18:35,748 --> 00:18:38,232
<i> Means we can now</i>
<i> reveal the wreck of</i>

218
00:18:38,268 --> 00:18:41,803
<i> One of the most famous</i>
<i> ships that ever sailed.</i>

219
00:18:44,541 --> 00:18:47,675
<i> Lusitania slowly emerges</i>
<i> back into the light.</i>

220
00:18:49,379 --> 00:18:53,147
<i> 32,000 tons of scarred</i>
<i> and twisted metal.</i>

221
00:19:00,840 --> 00:19:05,576
<i> She lies tilted on</i>
<i> her starboard side part</i>
<i> sunken into the sea bed.</i>

222
00:19:08,748 --> 00:19:11,566
<i> Can this be linked</i>
<i> to how she sank?</i>

223
00:19:12,302 --> 00:19:16,604
<i> Now seeing under</i>
<i> the sea floor, itself</i>
<i> it's possible to reveal</i>

224
00:19:16,639 --> 00:19:18,739
<i> Something never seen before.</i>

225
00:19:19,542 --> 00:19:22,343
<i> Evidence of a fatal blow.</i>

226
00:19:22,645 --> 00:19:27,582
<i> Here under the water line</i>
<i> the unmistakable hallmark</i>
<i> of a torpedo strike.</i>

227
00:19:33,506 --> 00:19:37,208
<i> U-20 has been ordered</i>
<i> to stalk these waters.</i>

228
00:19:37,944 --> 00:19:40,011
<i> Not only hunting warships...</i>

229
00:19:41,581 --> 00:19:43,748
<i> Liners too.</i>

230
00:19:46,169 --> 00:19:50,137
<i> The u-boat unleashes</i>
<i> a single torpedo, like</i>
<i> an assassin's bullet.</i>

231
00:19:51,541 --> 00:19:54,809
Eoin: If you could
imagine being on the deck
of the lusitania being six,

232
00:19:55,578 --> 00:19:59,180
Seven story's up
and looking over and you
see this thing coming at

233
00:19:59,215 --> 00:20:02,266
You and you know
it's gonna hit you and you
know exactly what it is...

234
00:20:04,037 --> 00:20:06,170
That must be daunting.

235
00:20:12,212 --> 00:20:14,879
<i> Narrator: Lusitania</i>
<i> is built to take</i>
<i> on huge amounts</i>

236
00:20:14,914 --> 00:20:17,415
<i> Of water yet</i>
<i> still stay afloat.</i>

237
00:20:18,101 --> 00:20:20,067
<i> How could a single shot,</i>

238
00:20:20,103 --> 00:20:22,770
<i> Send a ship this</i>
<i> big to the bottom?</i>

239
00:20:25,875 --> 00:20:29,777
<i> The drained wreck</i>
<i> reveals the hull is</i>
<i> snapped clean in half.</i>

240
00:20:32,215 --> 00:20:34,548
<i> And the tip of the</i>
<i> bow severely damaged.</i>

241
00:20:35,301 --> 00:20:39,036
<i> Evidence the liner</i>
<i> hits the sea floor</i>
<i> with tremendous force.</i>

242
00:20:42,408 --> 00:20:47,245
<i> Now at last we can</i>
<i> reconstruct lusitania's</i>
<i> final moments.</i>

243
00:20:50,483 --> 00:20:52,934
<i> The torpedo blows open a hole.</i>

244
00:20:56,489 --> 00:21:01,609
<i> Lusitania is travelling</i>
<i> so fast that her momentum</i>
<i> forces tons of water in.</i>

245
00:21:02,812 --> 00:21:05,313
<i> She plunges into the</i>
<i> atlantic taking nearly</i>

246
00:21:05,348 --> 00:21:09,066
<i> 1,200 men, women</i>
<i> and children with her.</i>

247
00:21:09,936 --> 00:21:13,271
Eoin: She's almost driving
herself underneath the water.

248
00:21:13,306 --> 00:21:17,074
And even if the
props were stopped she
still was 32,000 tons

249
00:21:17,110 --> 00:21:19,176
Still being driven forward.

250
00:21:20,546 --> 00:21:23,414
<i> Narrator: There's</i>
<i> hardly any time</i>
<i> to launch life boats.</i>

251
00:21:24,117 --> 00:21:27,134
Eoin: She was gone
in 20 minutes which must
have been just terrifying

252
00:21:27,603 --> 00:21:29,804
For the people on board.

253
00:21:29,839 --> 00:21:33,107
<i> Narrator: Lusitania's</i>
<i> speed hasn't saved her.</i>

254
00:21:33,142 --> 00:21:35,076
<i> It's killed her.</i>

255
00:21:35,778 --> 00:21:40,448
<i> She hits the sea</i>
<i> bed so fast that her</i>
<i> huge hull snaps in two.</i>

256
00:21:47,874 --> 00:21:50,541
<i> Many hundreds of</i>
<i> bodies wash ashore nearby.</i>

257
00:21:51,544 --> 00:21:54,245
<i> Buried in mass</i>
<i> graves in ireland.</i>

258
00:21:54,847 --> 00:21:58,115
<i> As the whole world</i>
<i> reels in shock.</i>

259
00:22:02,572 --> 00:22:04,505
Delgado: The germans
were seen as murderers,

260
00:22:04,540 --> 00:22:06,607
They were seen
as villains.

261
00:22:08,378 --> 00:22:11,045
<i> Narrator: U-boats are</i>
<i> now a terror weapon.</i>

262
00:22:14,350 --> 00:22:16,434
<i> But it's a risky strategy.</i>

263
00:22:16,803 --> 00:22:19,804
<i> The loss of american</i>
<i> civilians on lusitania and</i>

264
00:22:19,839 --> 00:22:22,907
<i> Further u-boat attacks</i>
<i> on american shipping,</i>

265
00:22:22,942 --> 00:22:25,810
<i> Pushes the us towards</i>
<i> joining the war.</i>

266
00:22:27,213 --> 00:22:30,114
<i> The german navy knows</i>
<i> that the clock is ticking.</i>

267
00:22:32,769 --> 00:22:35,102
Delgado: The germans know
that they have a short
window in which they can

268
00:22:35,138 --> 00:22:36,537
Try to win the war.

269
00:22:36,572 --> 00:22:38,139
If they can get
enough subs out there,

270
00:22:38,174 --> 00:22:40,207
If they can have advances
on the battlefield,

271
00:22:40,243 --> 00:22:41,809
Then they have a chance.

272
00:22:43,212 --> 00:22:46,013
<i> Narrator:</i>
<i> The killer u-boats</i>
<i> launch a new campaign</i>

273
00:22:46,049 --> 00:22:48,065
<i> To crush their</i>
<i> enemy outright.</i>

274
00:22:50,670 --> 00:22:53,604
<i> Waged here just off</i>
<i> the coast of britain.</i>

275
00:22:56,476 --> 00:23:00,745
<i> But the battle</i>
<i> is about to get a lot</i>
<i> tougher for everyone.</i>

276
00:23:13,810 --> 00:23:15,910
<i> Narrator: Lurking</i>
<i> beneath the surface.</i>

277
00:23:16,879 --> 00:23:19,330
<i> Unseen, unchallenged,</i>

278
00:23:19,749 --> 00:23:22,933
<i> The u-boat seems invincible.</i>

279
00:23:24,771 --> 00:23:26,670
Delgado: To counter the
threat of the german u-boats,

280
00:23:26,706 --> 00:23:28,372
The royal navy in particular

281
00:23:28,408 --> 00:23:30,541
Didn't have much that
they could throw at it.

282
00:23:31,778 --> 00:23:35,413
<i> Narrator: U-boats</i>
<i> can hide themselves within</i>
<i> sight of any british port.</i>

283
00:23:36,582 --> 00:23:38,966
<i> The enemy is at the gates.</i>

284
00:23:44,273 --> 00:23:48,876
<i> After sinking lusitania</i>
<i> the u-boat fleet doubles</i>
<i> to over 100 vessels.</i>

285
00:23:51,114 --> 00:23:53,814
<i> They're planning to</i>
<i> land a decisive blow.</i>

286
00:23:54,717 --> 00:23:57,935
Grove: We will sink
enough ships to stop
britain importing and

287
00:23:57,970 --> 00:23:59,637
This will defeat the british,

288
00:23:59,972 --> 00:24:02,807
Who are the
lynch pin of the allies
before the americans,

289
00:24:03,142 --> 00:24:05,543
Who might well
declare war, can bring
their power to bear.

290
00:24:08,214 --> 00:24:11,599
<i> Narrator: Britain's</i>
<i> ports are the final</i>
<i> destination for a vast</i>

291
00:24:11,634 --> 00:24:13,467
<i> Maritime supply chain.</i>

292
00:24:14,303 --> 00:24:17,104
<i> Thousands of merchant</i>
<i> ships bring vital food,</i>

293
00:24:17,140 --> 00:24:21,308
<i> Munitions and supplies</i>
<i> from the british</i>
<i> empire and the usa.</i>

294
00:24:24,046 --> 00:24:27,882
Delgado: The need to
support the war in europe
sees a massive shipment of

295
00:24:28,935 --> 00:24:31,168
Men and material
across the atlantic,

296
00:24:31,771 --> 00:24:34,772
As well as the
movement of ships in and
around the british isles.

297
00:24:35,408 --> 00:24:40,544
The germans know this
and the submarines are sent
out to take those ships out,

298
00:24:42,248 --> 00:24:44,248
With deadly effect.

299
00:24:44,584 --> 00:24:47,635
<i> Narrator: If the</i>
<i> german u-boats can cut</i>
<i> the flow of supply ships,</i>

300
00:24:47,670 --> 00:24:51,872
<i> They can starve britain</i>
<i> into submission and they'll</i>
<i> stop at nothing to do it.</i>

301
00:24:53,409 --> 00:24:55,676
Mccartney: It's a total war.
Civilians are targets.

302
00:24:55,711 --> 00:24:59,313
Merchant seamen are targets.
This is what total war is.

303
00:24:59,749 --> 00:25:02,166
It's not a war between
sailors and soldiers.

304
00:25:02,201 --> 00:25:05,819
It's a war in which
everybody is involved and
everybody will be sacrificed.

305
00:25:08,741 --> 00:25:12,176
<i> Narrator: This war</i>
<i> rages most fiercely</i>
<i> here in the irish sea,</i>

306
00:25:12,812 --> 00:25:15,846
<i> Just outside the important</i>
<i> port of liverpool.</i>

307
00:25:19,669 --> 00:25:23,170
<i> In these seas bangor</i>
<i> university's survey vessel,</i>

308
00:25:23,206 --> 00:25:25,606
<i> Prince madog</i>
<i> is on a mission.</i>

309
00:25:27,743 --> 00:25:29,476
Mccartney: There she is.

310
00:25:31,080 --> 00:25:34,048
<i> Narrator:</i>
<i> Marine archaeologist</i>
<i> innes mccartney has</i>

311
00:25:34,083 --> 00:25:37,301
<i> Joined forces with</i>
<i> oceanographer mike roberts.</i>

312
00:25:39,505 --> 00:25:42,139
<i> Using the latest scanners,</i>

313
00:25:42,174 --> 00:25:45,843
<i> Their ambitious plan</i>
<i> is to locate every</i>
<i> victim of this battle.</i>

314
00:25:47,013 --> 00:25:51,765
<i> And discover what happens</i>
<i> when the u-boats try to starve</i>
<i> britain into submission.</i>

315
00:25:53,569 --> 00:25:57,071
Roberts: In world war I this
stretch of water was a very,
very dangerous place to be.

316
00:26:00,376 --> 00:26:03,744
<i> Narrator: Every</i>
<i> merchant ship runs the</i>
<i> gauntlet to make it through</i>

317
00:26:03,779 --> 00:26:05,946
<i> This corridor of death.</i>

318
00:26:07,016 --> 00:26:10,501
Roberts: It must have been
terrifying knowing what
could happen at any moment.

319
00:26:11,704 --> 00:26:16,206
<i> Narrator: And prince madog's</i>
<i> survey is uncovering the</i>
<i> massive scale of the killing.</i>

320
00:26:17,410 --> 00:26:20,811
Roberts: Immediately
beneath us are the remnants
of a protracted battle, a

321
00:26:20,846 --> 00:26:24,181
Battlefield effectively
which contains
the remains of many,

322
00:26:24,216 --> 00:26:26,567
Many hundreds of shipwrecks.

323
00:26:29,238 --> 00:26:32,673
<i> Narrator: The sonar scans</i>
<i> reveal the scattered bodies</i>
<i> of the u-boats victims.</i>

324
00:26:33,943 --> 00:26:37,378
<i> They prey on any type of</i>
<i> vessel, thousands perish.</i>

325
00:26:41,667 --> 00:26:43,968
<i> Innes and mike study</i>
<i> one wreck closely.</i>

326
00:26:46,472 --> 00:26:49,139
<i> A ship heavily laden with</i>
<i> cargo for the war effort.</i>

327
00:26:51,043 --> 00:26:54,778
Mccartney: We know from
the position of where it is,
combined with the length and

328
00:26:55,681 --> 00:26:59,066
Other details, that we
can see that this is
the wreck of ss apapa.

329
00:27:04,140 --> 00:27:05,439
<i> Narrator: 4:00am.</i>

330
00:27:05,474 --> 00:27:08,208
<i> Nov 28th 1917.</i>

331
00:27:09,612 --> 00:27:13,814
<i> Ss apapa is almost at</i>
<i> the end of her journey</i>
<i> from west africa.</i>

332
00:27:16,402 --> 00:27:20,137
<i> As well as cargo, she's</i>
<i> carrying 119 passengers.</i>

333
00:27:21,240 --> 00:27:24,074
<i> Including many</i>
<i> women and children.</i>

334
00:27:24,777 --> 00:27:27,978
<i> Soon they'll be docking</i>
<i> safely at liverpool.</i>

335
00:27:28,014 --> 00:27:30,014
<i> They hope.</i>

336
00:27:30,383 --> 00:27:33,283
Mccartney: It's coming
into the danger zone where
the u-boats are waiting.

337
00:27:36,205 --> 00:27:39,506
<i> Narrator: Us-96 is in</i>
<i> the perfect position.</i>

338
00:27:42,111 --> 00:27:45,529
Mccartney: The u-boat
had maneuvered round and was
between the land and the ship.

339
00:27:45,781 --> 00:27:48,666
Undetectable against
the background.

340
00:27:50,202 --> 00:27:52,703
Fires a torpedo which
struck apapa in the stern.

341
00:27:55,141 --> 00:27:57,374
And it immediately
began to sink.

342
00:27:59,145 --> 00:28:02,546
The captain on the apapa
ordered the women and children
to be put into the lifeboats,

343
00:28:03,616 --> 00:28:05,799
So the lifeboats are
swung out and they're
put down on the rail.

344
00:28:07,970 --> 00:28:12,940
<i> Narrator: Though apapa</i>
<i> is already sinking, u-96's</i>
<i> commander heinrich jess,</i>

345
00:28:12,975 --> 00:28:15,409
<i> Isn't finished with her yet.</i>

346
00:28:17,613 --> 00:28:20,681
Mccartney:
At this point u-96 has
fired its second torpedo,

347
00:28:21,517 --> 00:28:23,834
What the commander referred
to as the killing shot.

348
00:28:25,905 --> 00:28:28,939
And it was being
hit the second time while
everybody was evacuating and

349
00:28:28,974 --> 00:28:31,075
It caused 77 people to die.

350
00:28:33,679 --> 00:28:37,214
<i> Narrator: The dead</i>
<i> civilians onboard apapa</i>
<i> make this one of the most</i>

351
00:28:37,249 --> 00:28:39,700
<i> Infamous u-boat attacks ever.</i>

352
00:28:39,969 --> 00:28:41,769
<i> But it's just one of many.</i>

353
00:28:41,804 --> 00:28:46,707
<i> Under orders to</i>
<i> sink a monthly quota of</i>
<i> 600,000 tons of shipping,</i>

354
00:28:46,909 --> 00:28:49,543
<i> U boat attacks are relentless.</i>

355
00:28:49,779 --> 00:28:53,647
Grove: In fact,
at one month, April 1917,
they get to 800,000 tons,

356
00:28:54,717 --> 00:28:55,766
It's quite massive.

357
00:28:55,801 --> 00:28:58,402
They're doing better
than they expected.

358
00:29:00,840 --> 00:29:03,607
<i> Narrator: National</i>
<i> survival is on the line,</i>

359
00:29:03,642 --> 00:29:06,009
<i> How can the</i>
<i> british fight back?</i>

360
00:29:07,529 --> 00:29:10,881
Delgado: Not only do
german submarines improve
and change during the

361
00:29:10,916 --> 00:29:12,533
First world war,

362
00:29:12,568 --> 00:29:15,569
But also the means by
which to find them and sink
them, also begin to change.

363
00:29:20,509 --> 00:29:23,143
<i> Narrator: Prince madog</i>
<i> has found dozens of wrecks.</i>

364
00:29:24,213 --> 00:29:27,314
<i> Now she picks up a new</i>
<i> signal from the sea floor.</i>

365
00:29:27,349 --> 00:29:30,000
<i> Unlike any seen so far.</i>

366
00:29:30,503 --> 00:29:33,637
<i> Is this evidence of an</i>
<i> under-water counter offensive?</i>

367
00:29:34,774 --> 00:29:37,808
Mccartney: Skinny
and tube-like with a
central high point.

368
00:29:39,211 --> 00:29:42,112
This is a classic
submarine wreck.

369
00:29:43,048 --> 00:29:45,432
<i> Narrator: Among</i>
<i> the wrecks surveyed</i>
<i> in the killing zone,</i>

370
00:29:46,569 --> 00:29:48,702
<i> This is the only u-boat.</i>

371
00:29:49,672 --> 00:29:53,440
<i> So, if u-boats are</i>
<i> so dominant here in 1917,</i>

372
00:29:54,677 --> 00:29:57,044
<i> What is it doing</i>
<i> on the sea bed?</i>

373
00:30:01,383 --> 00:30:05,669
<i> Prince madog's detailed</i>
<i> scan makes it possible</i>
<i> to drain back the</i>

374
00:30:05,704 --> 00:30:07,538
<i> Waters and investigate.</i>

375
00:30:10,910 --> 00:30:13,911
<i> It's an amazingly</i>
<i> well-preserved u-boat.</i>

376
00:30:13,946 --> 00:30:16,380
<i> Frozen in time.</i>

377
00:30:20,069 --> 00:30:25,072
<i> And this fearsome killer's</i>
<i> 200 foot long body looks</i>
<i> completely undamaged.</i>

378
00:30:31,213 --> 00:30:35,432
<i> Accurate measurements</i>
<i> from the high res scan</i>
<i> means innes can identify</i>

379
00:30:35,467 --> 00:30:37,568
<i> Exactly which u-boat this is.</i>

380
00:30:40,439 --> 00:30:42,739
Mccartney: The distance
from the bow to the conning
tower, to the stern,

381
00:30:43,409 --> 00:30:44,975
And all of that matches up

382
00:30:45,010 --> 00:30:47,110
Exactly correctly for u-87.

383
00:30:49,865 --> 00:30:51,648
<i> Narrator: It's an</i>
<i> incredible discovery.</i>

384
00:30:52,234 --> 00:30:57,571
<i> U-87 is one of a whole</i>
<i> new class of long-range</i>
<i> ocean-going hunter killers.</i>

385
00:30:58,941 --> 00:31:03,243
<i> It's faster than previous</i>
<i> u-boats and carries</i>
<i> twice as many torpedoes.</i>

386
00:31:05,281 --> 00:31:07,514
<i> A deadly threat.</i>

387
00:31:07,917 --> 00:31:11,501
Mccartney: U-87 was
the best type of submarine
the germans were capable of

388
00:31:11,770 --> 00:31:14,771
Making in 1916 to 1917.

389
00:31:16,542 --> 00:31:21,979
<i> Narrator: What could</i>
<i> its mysterious fate tell</i>
<i> us of the desperate struggle</i>

390
00:31:22,014 --> 00:31:24,948
<i> To stop the killer u-boats?</i>

391
00:31:37,446 --> 00:31:40,747
<i> Narrator: The wreck of</i>
<i> u-87 sits on the sea bed.</i>

392
00:31:41,050 --> 00:31:44,434
<i> Apparently intact.</i>

393
00:31:46,438 --> 00:31:49,740
<i> But over 500 feet across</i>
<i> the drained ocean floor,</i>

394
00:31:50,776 --> 00:31:54,311
<i> Another much smaller piece</i>
<i> of wreckage comes to light.</i>

395
00:31:55,080 --> 00:31:59,933
<i> It appears to be the</i>
<i> very tip of u-87's stern.</i>

396
00:32:00,569 --> 00:32:02,903
<i> What's it doing here?</i>

397
00:32:08,143 --> 00:32:10,510
<i> Aboard survey vessel</i>
<i> prince madog,</i>

398
00:32:11,780 --> 00:32:14,581
<i> Innes mccartney reviews</i>
<i> records of u-87,</i>

399
00:32:15,050 --> 00:32:19,303
<i> Detailing her mission,</i>
<i> and learns more about</i>
<i> the day she is destroyed.</i>

400
00:32:22,775 --> 00:32:26,810
Mccartney: Christmas day
1917, u-87 encounters
a small convoy.

401
00:32:31,550 --> 00:32:34,868
And torpedoes a steamship.

402
00:32:39,308 --> 00:32:42,743
The u-boat's periscope
is subsequently spotted.

403
00:32:43,178 --> 00:32:47,981
<i> Narrator: Royal navy</i>
<i> patrol boat p 56 has</i>
<i> u-87 in its sights.</i>

404
00:32:48,834 --> 00:32:51,134
Mccartney: The
chances of any of these
patrol boats ever seeing

405
00:32:51,170 --> 00:32:55,872
A submarine was remote and
when they did everything
gets used to take them out.

406
00:33:04,216 --> 00:33:07,868
<i> Narrator: And she's</i>
<i> carrying a new kind of</i>
<i> anti-submarine weapon.</i>

407
00:33:08,337 --> 00:33:11,405
<i> An underwater bomb,</i>
<i> called a depth charge.</i>

408
00:33:15,544 --> 00:33:18,145
Delgado: A depth charge is
an explosive that is set,

409
00:33:18,180 --> 00:33:20,380
Once launched or
rolled off the side or

410
00:33:20,416 --> 00:33:23,734
The back of a ship,
to detonate at a set depth.

411
00:33:29,008 --> 00:33:32,309
<i> Narrator: The british</i>
<i> captain gets as close</i>
<i> to the last sighting of u-87</i>

412
00:33:33,012 --> 00:33:35,812
<i> As he can and fires a</i>
<i> volley of depth charges.</i>

413
00:33:37,316 --> 00:33:39,700
<i> But is this what</i>
<i> sinks the u-boat?</i>

414
00:33:41,704 --> 00:33:43,937
<i> Can this small fragment</i>
<i> give us an answer?</i>

415
00:33:45,174 --> 00:33:48,608
<i> Some force has left</i>
<i> it 500 feet away</i>
<i> from the u-boat.</i>

416
00:33:49,778 --> 00:33:53,013
<i> But the edges of the</i>
<i> wound look clean not jagged.</i>

417
00:33:54,149 --> 00:33:56,299
<i> Could a depth</i>
<i> charge do this?</i>

418
00:33:57,136 --> 00:33:59,736
Engineer: Can you
confirm the range is
clear for firing, over.

419
00:34:00,305 --> 00:34:03,106
<i> Man (over radio):</i>
<i> Confirmed, the range is clear.</i>

420
00:34:03,809 --> 00:34:07,277
<i> Narrator: At a</i>
<i> remote defense testing</i>
<i> facility in scotland</i>

421
00:34:07,312 --> 00:34:09,946
<i> Demolition experts</i>
<i> are trying to understand</i>

422
00:34:09,982 --> 00:34:13,266
<i> What effect an underwater</i>
<i> blast can have on a u-boat.</i>

423
00:34:19,341 --> 00:34:23,744
<i> Sensitive equipment</i>
<i> measures the forces a depth</i>
<i> charge unleashes outside</i>

424
00:34:24,146 --> 00:34:26,079
<i> And inside the hull.</i>

425
00:34:27,683 --> 00:34:30,067
Engineer: 60 seconds.

426
00:34:31,036 --> 00:34:33,537
Misselbrook: I wouldn't
want to be in a submarine
when that happens to it,

427
00:34:33,572 --> 00:34:35,972
Cos it's a very violent event.

428
00:34:36,909 --> 00:34:38,708
(air horn)

429
00:34:40,746 --> 00:34:44,915
<i> Engineer (over radio):</i>
<i> 5-4-3-2-1.</i>

430
00:34:45,567 --> 00:34:46,767
(explosion)

431
00:34:55,110 --> 00:34:57,477
<i> Narrator: The blast</i>
<i> creates a pulsing shock wave.</i>

432
00:35:00,015 --> 00:35:02,415
<i> But is does not</i>
<i> crack open the hull.</i>

433
00:35:03,202 --> 00:35:08,939
<i> However, the test reveals</i>
<i> that depth charges can</i>
<i> damage subs in other ways.</i>

434
00:35:10,609 --> 00:35:13,910
Misselbrook:
The direct shockwave excites
the submarine, shakes it,

435
00:35:14,513 --> 00:35:17,314
Vibrates it
until equipment fails.

436
00:35:21,804 --> 00:35:24,504
<i> Narrator: If this array</i>
<i> of fragile pipes, valves</i>

437
00:35:24,540 --> 00:35:28,775
<i> And hatches breaks,</i>
<i> that threatens</i>
<i> the u-boats survival and</i>

438
00:35:28,811 --> 00:35:30,811
<i> Exposes its biggest weakness.</i>

439
00:35:33,448 --> 00:35:38,001
Delgado: By setting a
depth charge off underwater
the blast is intended

440
00:35:38,904 --> 00:35:42,038
To rupture the seams,
to break systems,

441
00:35:42,574 --> 00:35:44,941
To rattle the crew,
to concuss them.

442
00:35:48,280 --> 00:35:51,248
Mccartney:
Depth charges had the
immediate effect of driving

443
00:35:51,283 --> 00:35:53,834
The u-boat to the surface.

444
00:35:54,703 --> 00:35:57,470
<i> Narrator: On the surface</i>
<i> there's nowhere to hide.</i>

445
00:35:58,073 --> 00:36:00,640
<i> P 56 seizes the moment.</i>

446
00:36:04,246 --> 00:36:06,847
Grove: A good way of
sinking submarines,
was just to ram them.

447
00:36:07,816 --> 00:36:09,566
They were vulnerable to this.

448
00:36:09,835 --> 00:36:11,568
They could be cut
in half or have bits,

449
00:36:11,637 --> 00:36:13,770
Chunks taken out of them,
by a ship ramming them.

450
00:36:13,805 --> 00:36:15,872
This would sometimes
perhaps damage the ship,

451
00:36:15,908 --> 00:36:17,674
But on the other hand,
on balance it was better

452
00:36:17,709 --> 00:36:20,777
To sink the submarine and
ramming is very important.

453
00:36:24,816 --> 00:36:27,033
<i> Narrator: Risking</i>
<i> sinking itself,</i>

454
00:36:27,069 --> 00:36:29,970
<i> The patrol boat heads on a</i>
<i> collision course with u-87.</i>

455
00:36:35,344 --> 00:36:38,545
<i> The drained wreck</i>
<i> bears the scars of</i>
<i> this incredible clash.</i>

456
00:36:39,781 --> 00:36:43,533
<i> The impact cleanly</i>
<i> slices off the rear end,</i>

457
00:36:43,569 --> 00:36:45,802
<i> Leaving the fragment intact.</i>

458
00:36:47,206 --> 00:36:49,172
<i> It sinks to the bottom,</i>

459
00:36:49,208 --> 00:36:52,142
<i> Followed quickly</i>
<i> by the crippled u-boat.</i>

460
00:36:57,316 --> 00:36:59,399
Mccartney: As the
submarine was sinking
the patrol boat that,

461
00:36:59,434 --> 00:37:01,401
That had rammed it
could see the germans

462
00:37:01,436 --> 00:37:04,204
Inside the submarine so
we know it was opened right up.

463
00:37:06,808 --> 00:37:09,976
<i> Narrator: The german's</i>
<i> have been wreaking havoc in</i>
<i> the irish sea for months.</i>

464
00:37:12,214 --> 00:37:16,433
<i> But now u-87's crew</i>
<i> meets its own terrible fate.</i>

465
00:37:20,005 --> 00:37:24,674
Delgado: Submarines
were known to their crews
sometimes as steel coffins.

466
00:37:25,677 --> 00:37:28,678
I think it's an
apt analogy because when
we find one of these,

467
00:37:28,714 --> 00:37:29,913
Sitting on the bottom,

468
00:37:29,948 --> 00:37:31,982
Particularly
one lost in combat,

469
00:37:32,017 --> 00:37:34,801
You realize that the
crew is still inside.

470
00:37:38,206 --> 00:37:42,709
<i> Narrator: The wreck</i>
<i> of u-87 reveals that new</i>
<i> technology plus some luck</i>

471
00:37:43,045 --> 00:37:45,445
<i> And courage could</i>
<i> defeat a u-boat.</i>

472
00:37:47,249 --> 00:37:49,532
<i> And by the end of 1917,</i>

473
00:37:49,835 --> 00:37:53,069
<i> The royal navy has a</i>
<i> new a force dedicated</i>
<i> to the fight.</i>

474
00:37:54,840 --> 00:37:56,373
Mccartney: The
anti-submarine division

475
00:37:56,408 --> 00:37:58,808
Is charged with
looking at every single
means of technology,

476
00:37:59,311 --> 00:38:01,511
Every single means of
strategy available to it,

477
00:38:01,546 --> 00:38:04,147
To combat this threat and
it develops a whole raft of

478
00:38:04,182 --> 00:38:05,932
Different ways of
dealing with it.

479
00:38:09,171 --> 00:38:12,572
<i> Narrator: The counter</i>
<i> attack means taking the</i>
<i> war to the u-boats both</i>

480
00:38:12,607 --> 00:38:15,208
<i> Above and below the waves.</i>

481
00:38:16,378 --> 00:38:19,779
Delgado: They also develop
the undersea mine as
a more effective weapon and

482
00:38:19,815 --> 00:38:21,348
Ultimately build a,

483
00:38:21,383 --> 00:38:23,466
A fortress wall,
a barrage as they call it,

484
00:38:23,502 --> 00:38:26,236
Of mines to keep the
germans from approaching.

485
00:38:28,206 --> 00:38:32,275
<i> Narrator: Around</i>
<i> british coasts huge forests</i>
<i> of deadly floating bombs</i>

486
00:38:32,911 --> 00:38:35,345
<i> Now protect shipping.</i>

487
00:38:35,380 --> 00:38:39,099
<i> These massive mine</i>
<i> fields sink u-boats</i>
<i> and deter attacks.</i>

488
00:38:41,970 --> 00:38:48,308
<i> By the middle of 1918 the</i>
<i> kill rate drops off from its</i>
<i> peak at 800,000 tons per month,</i>

489
00:38:48,910 --> 00:38:52,979
<i> To under 400,000 tons</i>
<i> but that's still a</i>
<i> lot of sunken ships.</i>

490
00:38:54,182 --> 00:38:56,866
Delgado: For all of the
work being done to counter
the german u-boats,

491
00:38:57,736 --> 00:38:59,869
They reign supreme.

492
00:39:03,475 --> 00:39:07,077
<i> Narrator: Conventional</i>
<i> weapons are still not</i>
<i> landing a decisive blow.</i>

493
00:39:09,881 --> 00:39:14,401
<i> The british must use a secret</i>
<i> stealth weapon of their own.</i>

494
00:39:27,015 --> 00:39:30,500
<i> Narrator: The english</i>
<i> channel is where the battle</i>
<i> to defeat the u-boats</i>

495
00:39:30,535 --> 00:39:32,836
<i> Reaches its climax.</i>

496
00:39:33,638 --> 00:39:37,874
<i> By 1918 its entrance</i>
<i> blocked by a huge minefield.</i>

497
00:39:40,212 --> 00:39:44,214
<i> But off plymouth sonar scans</i>
<i> reveal the outline of a wreck.</i>

498
00:39:45,801 --> 00:39:48,501
<i> It's similar to apapa,</i>
<i> a cargo ship.</i>

499
00:39:49,704 --> 00:39:54,107
<i> Does this mean</i>
<i> that despite all allied</i>
<i> counter-measures u-boats</i>

500
00:39:54,142 --> 00:39:56,443
<i> Still threaten in these waters?</i>

501
00:39:57,646 --> 00:40:02,866
<i> Historical wreck researcher</i>
<i> steve mortimer is heading</i>
<i> out to take a closer look.</i>

502
00:40:03,902 --> 00:40:08,104
<i> For over 4 years he's been</i>
<i> searching for a lost legend.</i>

503
00:40:10,308 --> 00:40:13,943
<i> And this wreck is exactly</i>
<i> what he's looking for.</i>

504
00:40:15,881 --> 00:40:19,399
Mortimer: Today we're
looking to dive a shipwreck
that was sunk in 1918

505
00:40:20,202 --> 00:40:22,368
After a battle
with a german u-boat.

506
00:40:22,404 --> 00:40:24,237
We've been looking for
her for a number of years,

507
00:40:24,272 --> 00:40:26,639
Today we've got
a really hot target.

508
00:40:26,875 --> 00:40:29,709
She's lying in 65 meters,
we think, something like that.

509
00:40:31,513 --> 00:40:33,580
All we can do is go down,

510
00:40:33,615 --> 00:40:35,715
See what we find, and
see if we can identify her.

511
00:40:45,877 --> 00:40:50,046
<i> Narrator: Among the</i>
<i> thousands of defenseless</i>
<i> cargo ships sunk by u-boats</i>

512
00:40:50,115 --> 00:40:54,000
<i> In these deadly waters,</i>
<i> steve's target is special.</i>

513
00:40:57,706 --> 00:41:00,507
<i> The shape and</i>
<i> size of the hull,</i>

514
00:41:00,542 --> 00:41:03,743
<i> Proof that this was</i>
<i> built as a cargo ship.</i>

515
00:41:09,267 --> 00:41:12,702
<i> And the mangled</i>
<i> wreckage shows that</i>
<i> it met a violent end.</i>

516
00:41:15,540 --> 00:41:18,791
<i> But the murky conditions</i>
<i> obscure further secrets.</i>

517
00:41:23,748 --> 00:41:28,168
<i> Only draining away</i>
<i> the english channel can</i>
<i> fully uncover the wreck.</i>

518
00:41:30,238 --> 00:41:33,206
<i> And reveal the</i>
<i> extraordinary truth.</i>

519
00:41:34,876 --> 00:41:37,477
<i> The hull is twisted and bent.</i>

520
00:41:37,512 --> 00:41:39,612
<i> The bow torn open.</i>

521
00:41:39,648 --> 00:41:42,565
<i> Classic torpedo damage.</i>

522
00:41:42,767 --> 00:41:45,835
<i> But there's a totally</i>
<i> unexpected discovery too.</i>

523
00:41:47,539 --> 00:41:49,305
<i> Naval guns.</i>

524
00:41:49,508 --> 00:41:51,875
<i> Military hardware</i>
<i> on a cargo ship.</i>

525
00:41:54,779 --> 00:41:57,947
<i> For steve mortimer it's</i>
<i> the evidence he's dreamed of.</i>

526
00:42:00,802 --> 00:42:01,901
Mortimer: Fantastic!

527
00:42:01,937 --> 00:42:04,037
That must be it,
that must be it!

528
00:42:04,072 --> 00:42:05,872
The engine's on the
stern of the ship,

529
00:42:05,907 --> 00:42:07,674
There's two big
guns on the stern.

530
00:42:07,709 --> 00:42:09,209
It can't be anything else.

531
00:42:09,244 --> 00:42:11,144
That must be hms stock force.

532
00:42:12,514 --> 00:42:15,848
<i> Narrator:</i>
<i> Stock force is a legendary</i>
<i> british secret weapon.</i>

533
00:42:16,735 --> 00:42:19,002
<i> Codenamed a 'q' ship.</i>

534
00:42:20,605 --> 00:42:23,506
Delgado: The q-ship
is a warship disguised
as a merchant vessel.

535
00:42:24,709 --> 00:42:28,461
Mccartney: It is a ship
that is trying to pretend
to be something it isn't,

536
00:42:29,648 --> 00:42:31,247
And in this particular case,

537
00:42:31,283 --> 00:42:34,267
To look innocent,
but it is in fact
far from innocent.

538
00:42:34,302 --> 00:42:36,653
<i> Narrator:</i>
<i> She may look like</i>
<i> a harmless cargo ship,</i>

539
00:42:37,172 --> 00:42:39,806
<i> But stock force</i>
<i> is heavily armed.</i>

540
00:42:39,841 --> 00:42:42,008
<i> Four-inch naval guns,</i>

541
00:42:42,043 --> 00:42:45,712
<i> Like those on a cruiser</i>
<i> or destroyer sit on platforms</i>

542
00:42:45,747 --> 00:42:48,348
<i> That can be folded away</i>
<i> and hidden below deck.</i>

543
00:42:49,384 --> 00:42:51,901
Grove: It's one type of
stealth against another
type of stealth.

544
00:42:52,837 --> 00:42:56,139
<i> Narrator: Under a</i>
<i> directive from admiralty</i>
<i> chief winston churchill,</i>

545
00:42:56,775 --> 00:42:58,241
<i> The royal navy has</i>

546
00:42:58,276 --> 00:43:01,277
<i> Deployed q ships since the</i>
<i> submarine menace first began.</i>

547
00:43:03,915 --> 00:43:07,367
Mccartney: It's thought to
have been at least 200 ships
and they vary from the very

548
00:43:07,402 --> 00:43:10,203
Smallest little fishing vessels,

549
00:43:10,238 --> 00:43:12,238
Even single
mast sailing ships,

550
00:43:12,274 --> 00:43:14,907
Right through to
large merchant ships.

551
00:43:15,176 --> 00:43:18,144
<i> Narrator:</i>
<i> The sailors on board</i>
<i> are not merchant seamen,</i>

552
00:43:18,179 --> 00:43:19,445
<i> They're fighting men,</i>

553
00:43:19,481 --> 00:43:21,914
<i> Practiced in the</i>
<i> art of deception.</i>

554
00:43:25,070 --> 00:43:27,370
<i> July 30th 1918.</i>

555
00:43:28,373 --> 00:43:31,374
<i> As stock force sails</i>
<i> along the english channel,</i>

556
00:43:31,409 --> 00:43:34,344
<i> Her job isn't to</i>
<i> transport cargo,</i>

557
00:43:34,379 --> 00:43:36,980
<i> But to lure</i>
<i> a u-boat to attack.</i>

558
00:43:38,883 --> 00:43:40,800
<i> She spots a periscope.</i>

559
00:43:40,835 --> 00:43:42,969
<i> The trap can be laid.</i>

560
00:43:45,106 --> 00:43:49,242
<i> What happens next</i>
<i> makes stock force</i>
<i> and her crew famous.</i>

561
00:43:49,878 --> 00:43:52,445
<i> Their story immortalized</i>
<i> in a silent movie.</i>

562
00:43:55,283 --> 00:43:59,736
<i> With great skill u-80 has</i>
<i> crept through a minefield</i>
<i> and strikes first.</i>

563
00:44:03,141 --> 00:44:05,174
Mortimer: Most of the
bridge is destroyed.

564
00:44:05,210 --> 00:44:07,610
Some members of the
crew are trapped.

565
00:44:08,046 --> 00:44:11,280
<i> Narrator:</i>
<i> Stock force starts to sink.</i>

566
00:44:11,516 --> 00:44:14,834
<i> The crew rushes</i>
<i> to abandon ship.</i>

567
00:44:15,437 --> 00:44:17,470
<i> But it's all</i>
<i> part of the trick.</i>

568
00:44:18,873 --> 00:44:20,840
Mccartney: They
were even trained how
to tip the lifeboat over

569
00:44:20,875 --> 00:44:22,275
While they
were dropping it,

570
00:44:22,310 --> 00:44:24,577
So just to make the whole
thing look very amateurish.

571
00:44:25,447 --> 00:44:28,247
The crew would then be
off and the u-boat would
then move in to close

572
00:44:28,283 --> 00:44:30,500
Quarters to
finish off the ship.

573
00:44:36,975 --> 00:44:38,775
<i> Narrator:</i>
<i> U-80 takes the bait,</i>

574
00:44:38,810 --> 00:44:41,344
<i> Surfacing to inspect</i>
<i> its handiwork.</i>

575
00:44:44,215 --> 00:44:47,767
<i> Stock force's captain</i>
<i> harold auten holds his nerve.</i>

576
00:44:49,270 --> 00:44:52,805
Mortimer: Auten waits
until the u-boat is in the
optimum position to attack it

577
00:44:52,841 --> 00:44:54,307
And then shouts,

578
00:44:54,342 --> 00:44:57,310
"let's go", ordering
his crew to fight back
with everything they've got.

579
00:45:00,215 --> 00:45:01,881
Grove: In would
come the submarine,

580
00:45:01,916 --> 00:45:03,766
Down would come the
covers over the guns and

581
00:45:03,802 --> 00:45:05,735
Battle would commence.

582
00:45:08,606 --> 00:45:12,075
Mccartney: It would be
a hell-fire of shells
pouring into it.

583
00:45:12,377 --> 00:45:16,012
Grove: You have to be able
to hold your nerve even
if your ship is sinking.

584
00:45:17,649 --> 00:45:21,567
And open fire
and continue firing on
a platform that is going

585
00:45:21,603 --> 00:45:23,503
Glug, glug,
glug into the ocean.

586
00:45:24,839 --> 00:45:26,806
<i> Narrator: The u-boat is hit,</i>

587
00:45:26,841 --> 00:45:29,842
<i> The captain of stock force</i>
<i> escapes only moments before</i>

588
00:45:30,178 --> 00:45:32,678
<i> His ship goes down.</i>

589
00:45:35,216 --> 00:45:38,301
<i> Commander harold auten</i>
<i> wins the victoria cross.</i>

590
00:45:39,304 --> 00:45:41,938
<i> Britain's highest</i>
<i> award for valor.</i>

591
00:45:43,708 --> 00:45:46,743
<i> At last the allies</i>
<i> are neutralizing</i>
<i> the u-boat threat.</i>

592
00:45:47,979 --> 00:45:51,447
<i> And cargo ships now</i>
<i> reach britain in well</i>
<i> protected cooys.</i>

593
00:45:52,784 --> 00:45:56,969
<i> There are simply</i>
<i> not enough u-boats left to</i>
<i> stop the flow of supplies.</i>

594
00:45:59,307 --> 00:46:02,308
Delgado: If the germans
had been able to keep
producing more submarines,

595
00:46:03,311 --> 00:46:06,012
They might very well
have won the war.

596
00:46:07,849 --> 00:46:11,501
<i> Narrator: When the</i>
<i> exhausted germans finally</i>
<i> surrender in November 1918,</i>

597
00:46:13,638 --> 00:46:16,472
<i> They are forced to</i>
<i> hand over their u-boats.</i>

598
00:46:21,579 --> 00:46:25,548
Mccartney: Before 1914,
there isn't a great deal
of understanding about

599
00:46:25,583 --> 00:46:27,467
What the submarine
can really do.

600
00:46:27,502 --> 00:46:29,035
But by 1918,

601
00:46:29,070 --> 00:46:31,437
Everybody knows,
it's a lethal weapon.

602
00:46:32,207 --> 00:46:34,907
<i> Narrator: No-one knows</i>
<i> this better than the man</i>

603
00:46:34,943 --> 00:46:38,711
<i> Bent on resurrecting</i>
<i> german naval</i>
<i> power in the 1930s.</i>

604
00:46:41,115 --> 00:46:42,582
Delgado: The nazis,

605
00:46:42,617 --> 00:46:45,134
Well aware of the
success of the u-boats
in world war I,

606
00:46:45,170 --> 00:46:48,938
Adopt that technology
and adopt those
strategies yet again.

607
00:46:51,109 --> 00:46:52,809
<i> Narrator: In</i>
<i> the second world war,</i>

608
00:46:52,844 --> 00:46:58,047
<i> The nazis launch over 1100</i>
<i> new and improved u-boats.</i>

609
00:46:59,817 --> 00:47:03,169
<i> And once again they</i>
<i> devastate allied shipping.</i>

610
00:47:05,273 --> 00:47:08,040
<i> Crewed by brave</i>
<i> and remorseless men,</i>

611
00:47:08,076 --> 00:47:11,677
<i> The killer u-boats</i>
<i> revolutionize naval warfare.</i>

612
00:47:12,347 --> 00:47:16,666
<i> The ancestors</i>
<i> of the super-subs</i>
<i> that silently and secretly</i>

613
00:47:16,701 --> 00:47:18,968
<i> Dominate the oceans today.</i>

614
00:47:19,337 --> 00:47:21,137
Captioned by cotter
captioning services.