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German submarineU-751

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German World War II submarine

History
In port at St. Nazaire on 15 June 1942
Nazi Germany
Name	U-751
Ordered	9 October 1939^[1]
Builder	Kriegsmarinewerft Wilhelmshaven
Yard number	134
Laid down	2 January 1940^[1]
Launched	16 November 1940^[1]
Commissioned	31 January 1941^[1]
Fate	Sunk on 17 July 1942^[1]
General characteristics
Class and type	Type VIIC submarine
Displacement	769tonnes (757long tons) surfaced 871 t (857 long tons) submerged
Length	67.10 m (220 ft 2 in)o/a 50.50 m (165 ft 8 in)pressure hull
Beam	6.20 m (20 ft 4 in) o/a 4.70 m (15 ft 5 in) pressure hull
Height	9.60 m (31 ft 6 in)
Draught	4.74 m (15 ft 7 in)
Installed power	2,800–3,200 PS (2,100–2,400 kW; 2,800–3,200 bhp) (diesels) 750 PS (550 kW; 740 shp) (electric)
Propulsion	2 shafts 2 ×diesel engines 2 ×electric motors
Speed	17.7 knots (32.8 km/h; 20.4 mph) surfaced 7.6 knots (14.1 km/h; 8.7 mph) submerged
Range	8,500 nmi (15,700 km; 9,800 mi) at 10 knots (19 km/h; 12 mph) surfaced 80 nmi (150 km; 92 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth	230 m (750 ft) Crush depth: 250–295 m (820–968 ft)
Complement	4 officers, 40–56 enlisted
Armament	5 × 53.3 cm (21 in)torpedo tubes (four bow, one stern) 14 ×torpedoesor 26 TMAmines 1 ×8.8 cm (3.46 in) deck gun (220 rounds) 1 x2 cm (0.79 in) C/30 AA gun
Service record
Part of:	7th U-Boat Flotilla 31 January 1941 – 17 July 1942
Identification codes:	M 30 807
Commanders:	Kptlt.Gerhard Bigalk 31 January 1941 – 17 July 1942
Operations:	7 patrols:^[1] 1st patrol: 3 June – 5 July 1941 2nd patrol: 2 August – 8 September 1941 3rd patrol: 11 October – 8 November 1941 4th patrol: 16 – 26 December 1941 5th patrol: 14 January – 23 February 1942 6th patrol: 15 April – 15 June 1942 7th patrol: 14 – 17 July 1942
Victories:	5 merchant ships sunk (21,412 GRT)^[1] 1 warship sunk (11,000 tons) 1 merchant ship damaged (8,096 GRT)

German submarineU-751 was aType VIIC U-boat built forNazi Germany'sKriegsmarine for service duringWorld War II. Built as yard number 134 of theKriegsmarinewerft shipyard inWilhelmshaven, she wascommissioned on 31 January 1941. She served with7th U-boat Flotilla until 1 June as a training boat, and as an operational boat until 17 July 1942, under the command ofKapitänleutnantGerhard Bigalk.U-751 served in seven patrols with the 7th U-boat Flotilla, sinking the escort carrierHMS Audacity. The U-boat was attacked with depth charges from aircraft on 17 July 1942 and sank with the loss of all 48 crew members.

Design

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German Type VIIC submarines were preceded by the shorterType VIIB submarines.U-751 had a displacement of 769 tonnes (757 long tons) when at the surface and 871 tonnes (857 long tons) while submerged.^[2] She had a total length of 67.10 m (220 ft 2 in), apressure hull length of 50.50 m (165 ft 8 in), abeam of 6.20 m (20 ft 4 in), a height of 9.60 m (31 ft 6 in), and adraught of 4.74 m (15 ft 7 in). The submarine was powered by twoGermaniawerft F46 four-stroke, six-cylindersupercharged diesel engines producing a total of 2,800 to 3,200 metric horsepower (2,060 to 2,350 kW; 2,760 to 3,160 shp) for use while surfaced, twoBrown, Boveri & Cie GG UB 720/8double-acting electric motors producing a total of 750 metric horsepower (550 kW; 740 shp) for use while submerged. She had two shafts and two 1.23 m (4 ft)propellers. The boat was capable of operating at depths of up to 230 metres (750 ft).^[2]

The submarine had a maximum surface speed of 17.7 knots (32.8 km/h; 20.4 mph) and a maximum submerged speed of 7.6 knots (14.1 km/h; 8.7 mph).^[2] When submerged, the boat could operate for 80 nautical miles (150 km; 92 mi) at 4 knots (7.4 km/h; 4.6 mph); when surfaced, she could travel 8,500 nautical miles (15,700 km; 9,800 mi) at 10 knots (19 km/h; 12 mph).U-751 was fitted with five 53.3 cm (21 in)torpedo tubes (four fitted at the bow and one at the stern), fourteentorpedoes, one8.8 cm (3.46 in) SK C/35 naval gun, 220 rounds, and a2 cm (0.79 in) C/30 anti-aircraft gun. The boat had acomplement of between forty-four and sixty.^[2]

Service history

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On 14 June 1941, eleven days into her thirty-three-day first patrol whileen route fromKiel toSt. Nazaire,U-751 attacked and sank the British shipSt Lindsay (5,370 gross register tons (GRT)).

Arriving at St. Nazaire on 5 July,U-751 stayed in port for thirty-four days before going on her second patrol. She attacked no ships on her second and third voyages.

Five days into her fourth patrol, on 21 December 1941,U-751 attacked and sankHMS Audacity, anescort carrier attached with Britishconvoy HG 76.^[3]

On 14 January 1942,U-751 left St. Nazaire on her fifth patrol, destined to return on 23 February. Nineteen days into this patrol, on February 2,U-751 attacked and damaged the Dutch shipCorilla, part of convoyHX 173 (8,096 GRT). Two days later, she sank the British shipSilveray, adding another 4,535 GRT to her score. Another British ship,Empire Sun, was sunk another three days later, for 6,952 GRT. The American shipsNicarao andIsabela were sunk in her sixth patrol, on 16 and 19 May 1942, totalling 1,455 and 3,110 GRTs respectively.

Wolfpacks

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U-751 took part in six wolfpacks, namely:

West (16 – 20 June 1941)
Hammer (5 – 12 August 1941)
Grönland (12 – 27 August 1941)
Bosemüller (28 August – 2 September 1941)
Seewolf (2 – 5 September 1941)
Reissewolf (21 – 31 October 1941)

Fate

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*U-751* disabled, unable to dive and circling, apparently out of control following an attack on 17 July 1942.

After serving six operational patrols,U-751 was attacked on her seventh patrol four days into her voyage on 17 July 1942. After an initial attack by aArmstrong Whitworth Whitley bomber (ofNo. 502 Squadron RAF) had disabled her, she was attacked by a second aircraft, anAvro Lancaster bomber (ofNo. 61 Squadron RAF) seconded to Coastal Command. Both aircraft took photographs of U-751 on the surface, reporting men and lifeboats in the water. She was sunk by depth charges from the Lancaster, with all hands lost, in the Atlantic around 200 miles north-west ofCape Ortegal, Spain.^[4]^[5]^[a]

Summary of raiding history

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Ships sunk^{[Note 1]}
Date	Ship	Flag	GRT/ disp	Fate^[6]
14 June 1941	St. Lindsay	United Kingdom	5,370	Sunk
21 December 1941	HMS Audacity	Royal Navy	11,000	Sunk
2 February 1942	Corilla	Netherlands	8,096	Damaged
4 February 1942	Silveray	United Kingdom	4,535	Sunk
7 February 1942	Empire Sun	United Kingdom	6,952	Sunk
16 May 1942	Nicarao	United States	1,445	Sunk
19 May 1942	Isabela	United States	3,110	Sunk

References

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Notes

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^Merchant ship tonnages are ingross register tons. Military vessels are listed by tonsdisplacement.

^different sources identify the exact location as either the Bay of Biscay, or just into the Atlantic Ocean itself

Citations

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^^a ^b ^c ^d ^e ^f ^gHelgason, Guðmundur."The Type VIIC boat U-751".German U-boats of WWII - uboat.net. Retrieved13 October 2009.
^^a ^b ^c ^dGröner 1991, pp. 43–46.
^Helgason, Guðmundur."Patrol of German U-boat U-751 from 16 Dec 1941 to 26 Dec 1941".German U-boats of WWII - uboat.net. Retrieved29 December 2014.
^"U-boat U-751".Imperial War Museum. Retrieved22 October 2024.
^"U-751".uboat.net. Retrieved22 October 2024.
^Helgason, Guðmundur."Ships hit by U-751".German U-boats of WWII - uboat.net. Retrieved10 February 2014.

Bibliography

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Busch, Rainer; Röll, Hans-Joachim (1999).German U-boat commanders of World War II : a biographical dictionary. Translated by Brooks, Geoffrey. London, Annapolis, Md: Greenhill Books, Naval Institute Press.ISBN 1-55750-186-6.
Busch, Rainer; Röll, Hans-Joachim (1999).Deutsche U-Boot-Verluste von September 1939 bis Mai 1945 [German U-boat losses from September 1939 to May 1945]. Der U-Boot-Krieg (in German). Vol. IV. Hamburg, Berlin, Bonn: Mittler.ISBN 3-8132-0514-2.
Gröner, Erich; Jung, Dieter; Maass, Martin (1991).U-boats and Mine Warfare Vessels. German Warships 1815–1945. Vol. 2. Translated by Thomas, Keith; Magowan, Rachel. London: Conway Maritime Press.ISBN 0-85177-593-4.

External links

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Helgason, Guðmundur."The Type VIIC boat U-751".German U-boats of WWII - uboat.net. Retrieved29 December 2014.

v t e Type VII submarines
Type VIIA	U-27 U-28 U-29 U-30 U-31 U-32 U-33 U-34 U-35 U-36
Type VIIB	U-45 U-46 U-47 U-48 U-49 U-50 U-51 U-52 U-53 U-54 U-55 U-73 U-74 U-75 U-76 U-83 U-84 U-85 U-86 U-87 U-99 U-100 U-101 U-102
Type VIIC	U-69 U-70 U-71 U-72 U-77 U-78 U-79 U-80 U-81 U-82 U-88 U-89 U-90 U-91 U-92 U-93 U-94 U-95 U-96 U-97 U-98 U-132 U-133 U-134 U-135 U-136 U-201 U-202 U-203 U-204 U-205 U-206 U-207 U-208 U-209 U-210 U-211 U-212 U-221 U-222 U-223 U-224 U-225 U-226 U-227 U-228 U-229 U-230 U-231 U-232 U-235 U-236 U-237 U-238 U-239 U-240 U-241 U-242 U-243 U-244 U-245 U-246 U-247 U-248 U-249 U-250 U-251 U-252 U-253 U-254 U-255 U-256 U-257 U-258 U-259 U-260 U-261 U-262 U-263 U-264 U-265 U-266 U-267 U-268 U-269 U-270 U-271 U-272 U-273 U-274 U-275 U-276 U-277 U-278 U-279 U-280 U-281 U-282 U-283 U-284 U-285 U-286 U-287 U-288 U-289 U-290 U-291 U-301 U-302 U-303 U-304 U-305 U-306 U-307 U-308 U-309 U-310 U-311 U-312 U-313 U-314 U-315 U-316 U-331 U-332 U-333 U-334 U-335 U-336 U-337 U-338 U-339 U-340 U-341 U-342 U-343 U-344 U-345 U-346 U-347 U-348 U-349 U-350 U-351 U-352 U-353 U-354 U-355 U-356 U-357 U-358 U-359 U-360 U-361 U-362 U-363 U-364 U-365 U-366 U-367 U-368 U-369 U-370 U-371 U-372 U-373 U-374 U-375 U-376 U-377 U-378 U-379 U-380 U-381 U-382 U-383 U-384 U-385 U-386 U-387 U-388 U-389 U-390 U-391 U-392 U-393 U-394 U-396 U-397 U-398 U-399 U-400 U-401 U-402 U-403 U-404 U-405 U-406 U-407 U-408 U-409 U-410 U-411 U-412 U-413 U-414 U-415 U-416 U-417 U-418 U-419 U-420 U-421 U-422 U-423 U-424 U-425 U-426 U-427 U-428 U-429 U-430 U-431 U-432 U-433 U-434 U-435 U-436 U-437 U-438 U-439 U-440 U-441 U-442 U-443 U-444 U-445 U-446 U-447 U-448 U-449 U-450 U-451 U-452 U-453 U-454 U-455 U-456 U-457 U-458 U-465 U-466 U-467 U-468 U-469 U-470 U-471 U-472 U-473 U-475 U-476 U-477 U-478 U-479 U-480 U-481 U-482 U-483 U-484 U-485 U-486 U-551 U-552 U-553 U-554 U-555 U-556 U-557 U-558 U-559 U-560 U-561 U-562 U-563 U-564 U-565 U-566 U-567 U-568 U-569 U-570 U-571 U-572 U-573 U-574 U-575 U-576 U-577 U-578 U-579 U-580 U-581 U-582 U-583 U-584 U-585 U-586 U-587 U-588 U-589 U-590 U-591 U-592 U-593 U-594 U-595 U-596 U-597 U-598 U-599 U-600 U-601 U-602 U-603 U-604 U-605 U-606 U-607 U-608 U-609 U-610 U-611 U-612 U-613 U-614 U-615 U-616 U-617 U-618 U-619 U-620 U-621 U-622 U-623 U-624 U-625 U-626 U-627 U-628 U-629 U-630 U-631 U-632 U-633 U-634 U-635 U-636 U-637 U-638 U-639 U-640 U-641 U-642 U-643 U-644 U-645 U-646 U-647 U-648 U-649 U-650 U-651 U-652 U-653 U-654 U-655 U-656 U-657 U-658 U-659 U-660 U-661 U-662 U-663 U-664 U-665 U-666 U-667 U-668 U-669 U-670 U-671 U-672 U-673 U-674 U-675 U-676 U-677 U-678 U-679 U-680 U-681 U-682 U-683 U-701 U-702 U-703 U-704 U-705 U-706 U-707 U-708 U-709 U-710 U-711 U-712 U-713 U-714 U-715 U-716 U-717 U-718 U-719 U-720 U-721 U-722 U-731 U-732 U-733 U-734 U-735 U-736 U-737 U-738 U-739 U-740 U-741 U-742 U-743 U-744 U-745 U-746 U-747 U-748 U-749 U-750 U-751 U-752 U-753 U-754 U-755 U-756 U-757 U-758 U-759 U-760 U-761 U-762 U-763 U-764 U-765 U-766 U-767 U-768 U-771 U-772 U-773 U-774 U-775 U-776 U-777 U-778 U-779 U-821 U-822 U-825 U-826 U-901 U-903 U-904 U-905 U-907 U-921 U-922 U-923 U-924 U-925 U-926 U-927 U-928 U-951 U-952 U-953 U-954 U-955 U-956 U-957 U-958 U-959 U-960 U-961 U-962 U-963 U-964 U-965 U-966 U-967 U-968 U-969 U-970 U-971 U-972 U-973 U-974 U-975 U-976 U-977 U-978 U-979 U-980 U-981 U-982 U-983 U-984 U-985 U-986 U-987 U-988 U-989 U-990 U-991 U-992 U-993 U-994 U-1051 U-1052 U-1053 U-1054 U-1055 U-1056 U-1057 U-1058 U-1101 U-1102 U-1131 U-1132 U-1161 U-1162 U-1191 U-1192 U-1193 U-1194 U-1195 U-1196 U-1197 U-1198 U-1199 U-1200 U-1201 U-1202 U-1203 U-1204 U-1205 U-1206 U-1207 U-1208 U-1209 U-1210
Type VIIC/41	U-292 U-293 U-294 U-295 U-296 U-297 U-298 U-299 U-300 U-317 U-318 U-319 U-320 U-321 U-322 U-323 U-324 U-325 U-326 U-327 U-328 U-691 U-827 U-828 U-929 U-930 U-995 U-997 U-998 U-999 U-1000 U-1001 U-1002 U-1003 U-1004 U-1005 U-1006 U-1007 U-1008 U-1009 U-1010 U-1011 U-1013 U-1014 U-1015 U-1016 U-1017 U-1018 U-1019 U-1020 U-1021 U-1022 U-1023 U-1024 U-1025 U-1063 U-1064 U-1065 U-1103 U-1104 U-1105 U-1106 U-1107 U-1108 U-1109 U-1110 U-1163 U-1164 U-1165 U-1166 U-1167 U-1168 U-1169 U-1170 U-1171 U-1172 U-1271 U-1272 U-1273 U-1274 U-1275 U-1276 U-1277 U-1278 U-1279 U-1301 U-1302 U-1303 U-1304 U-1305 U-1306 U-1307 U-1308
Type VIID	U-213 U-214 U-215 U-216 U-217 U-218
Type VIIF	U-1059 U-1060 U-1061 U-1062
Preceded by:Type II Followed by:Type IX List of U-boats of Germany

v t e Shipwrecks and maritime incidents in July 1942
Shipwrecks	1 Jul:Edward Luckenbach,Montevideo Maru 2 Jul:Ukraina 3 Jul:Alexander Macomb,U-215 4 Jul:Nenohi,Christopher Newport 5 Jul:Arare,Empire Byron,HMS Niger,River Afton,John Randolph 6 Jul:Avila Star,U-502 7 Jul:RFA Aldersdale,Fiddown,Hartlebury,Pan Kraft,U-701 9 Jul:Empire Explorer,Nicholas Cuneo,Santa Rita 10 Jul:El Capitan 11 Jul:U-136 13 Jul:U-153,R. W. Gallagher 14 Jul:Pietro Calvi,Shch-317,USAT Arcata 15 Jul:Empire Attendant,HMHS Gloucester Castle,U-576 16 Jul:Fairport,Komintern 17 Jul:U-751 22 Jul:Ayatosan Maru,USS Southern Seas 24 Jul:Toufic El Rahman,U-90 26 Jul:Oaxaca 27 Jul:HM Motor Gun Boat 501 28 Jul:Broompark,V 202Hermann Bösch 30 Jul:Robert E. Lee,U-166 31 Jul:USS Grunion,U-213,U-588,U-754
Other incidents	5 Jul:RFA Aldersdale,Argo,Pan Kraft 7 Jul:J. A. Moffett Jr. 9 Jul:El Capitan 13 Jul:USS S-16 15 Jul:Pennsylvania Sun 19 Jul:Malines 28 Jul:V 203Carl Röver 30 Jul:Kōtoku Maru
194119421943 June 1942August 1942

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