German submarine U-704

History
Nazi Germany
Name	U-704
Ordered	9 October 1939
Builder	HC Stülcken & Sohn, Hamburg
Yard number	763
Laid down	26 August 1940
Launched	28 August 1941
Commissioned	18 November 1941
Fate	Scuttled on 30 April 1945
General characteristics
Class and type	Type VIIC submarine
Displacement	769 tonnes (757 long 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 × torpedoes ; 1 × 8.8 cm (3.46 in) deck gun (220 rounds); 1 x 2 cm (0.79 in) C/30 AA gun;
Service record
Part of:	8th U-boat Flotilla ; 18 November 1941 – 30 June 1942; 7th U-boat Flotilla ; 1 July 1942 – 1 April 1943 ; 21st U-boat Flotilla ; 1 April – 31 May 1943; 24th U-boat Flotilla ; 1 June – 31 August 1943; 23rd U-boat Flotilla ; 1 September 1943 – 31 July 1944; 21st U-boat Flotilla; 1 August 1944 – 24 March 1945;
Identification codes:	M 43 929
Commanders:	Oblt.z.S. / Kptlt. Horst Wilhelm Kessler; 18 November 1941 – April 1943; Oblt.z.S. Karl-Heinz Hagenau; 12 Jun 1943 – April 1944; Lt.z.S. Gerhard Ady; April – July 1944; Oblt.z.S. Wolfgang Schwarzkopf; 6 August – 18 December 1944; Oblt.z.S. Gerhard Nolte; 19 December 1944 – 24 March 1945;
Operations:	5 patrols:; 1st patrol:; 30 June – 16 August 1942; 2nd patrol:; 9 – 15 September 1942; 3rd patrol:; 5 October – 23 November 1942; 4th patrol:; a. 1 – 2 January 1943; b. 7 January – 12 February 1943; 5th patrol:; a. 14 March – 5 April 1943; b. 6 – 11 April 1943;
Victories:	1 merchant ship sunk ; (6,942 GRT)

Last updated May 23, 2024

German submarine U-704 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II.

Design

German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-704 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), a pressure hull length of 50.50 m (165 ft 8 in), a beam of 6.20 m (20 ft 4 in), a height of 9.60 m (31 ft 6 in), and a draught of 4.74 m (15 ft 7 in). The submarine was powered by two Germaniawerft F46 four-stroke, six-cylinder supercharged 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, two AEG GU 460/8–27 double-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-704 was fitted with five 53.3 cm (21 in) torpedo tubes (four fitted at the bow and one at the stern), fourteen torpedoes, one 8.8 cm (3.46 in) SK C/35 naval gun, 220 rounds, and a 2 cm (0.79 in) C/30 anti-aircraft gun. The boat had a complement of between forty-four and sixty.^[2]

Service history

U-704 set out on its first patrol, a transit to its operational base at Saint-Nazaire on 30 June 1942.^[3] During this patrol, U-704 formed part of wolfpack "Wolf" which was to patrol between Iceland and Greenland, out of the range of allied air cover. On 26 July 1942, U-704 torpedoed the 6,942 GRT British freighter Empire Rainbow, part of convoy Convoy ON-113. Empire Rainbow had already been damaged by a torpedo from U-607, and U-704's torpedo sank the freighter.^[3]^[4]

U-704 carried out a further four operational patrols under the command of Kessler from Saint Nazaire and La Pallice, sinking no further ships.^[3]U-704 did fire four torpedoes at the troopship Queen Elizabeth on 9 November 1942, with Kessler claiming a hit, although Queen Elizabeth was undamaged.^[5]

Fate

U-704 then served as a training submarine in the Baltic Sea for the rest of the war, and was scuttled at Vegesack on 30 April 1945.^[1]

Wolfpacks

U-704 took part in seven wolfpacks, namely:

Wolf (13 – 31 July 1942)
Pirat (31 July – 3 August 1942)
Steinbrinck (3 – 11 August 1942)
Panther (10 – 20 October 1942)
Veilchen (20 October – 7 November 1942)
Habicht (10 – 19 January 1943)
Haudegen (19 January – 9 February 1943)

Summary of raiding history

Date	Ship Name	Nationality	Tonnage (GRT)	Fate^[6]
26 July 1942	Empire Rainbow	United Kingdom	6,942	Sunk

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References

1 2 3 4 5 6 7 8 9 Helgason, Guðmundur. "The Type VIIC boat U-704". German U-boats of WWII - uboat.net. Retrieved 12 May 2012.
1 2 3 4 Gröner 1991, pp. 43–46.
1 2 3 Helgason, Guðmundur. "War Patrols by German U-boat U-704". German U-boats of WWII - uboat.net. Retrieved 12 May 2012.
↑ Blair Hitler's U-Boat War: The Hunters 1939–1942 2000, p. 655.
↑ Blair Hitler's U-Boat War: The Hunted 1942–1945 2000, p. 107.
↑ Helgason, Guðmundur. "Ships hit by U-704". German U-boats of WWII - uboat.net. Retrieved 9 February 2014.

Bibliography

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). German Warships 1815–1945, U-boats and Mine Warfare Vessels. Vol. 2. Translated by Thomas, Keith; Magowan, Rachel. London: Conway Maritime Press. ISBN 0-85177-593-4.
Blair, Clay (2000). Hitler's U-Boat War: The Hunters 1939–1942. London: Cassell. ISBN 0-304-35260-8.
Blair, Clay (2000). Hitler's U-Boat War: The Hunted, 1942–1945. New York: Modern Library. ISBN 0-679-64033-9.
Edwards, Bernard (1996). Dönitz and the Wolf Packs - The U-boats at War. Cassell Military Classics. pp. 75, 83, 89. ISBN 0-304-35203-9.
Gardiner, Robert; Chesneau, Roger (1980). Conway's All The World's Fighting Warships 1922–1946. London: Conway Maritime Press. ISBN 0-85177-146-7.

External links

Helgason, Guðmundur. "The Type VIIC boat U-704". German U-boats of WWII - uboat.net. Retrieved 29 December 2014.

This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.

[uboat-1] 1 2 3 4 5 6 7 8 9 Helgason, Guðmundur. "The Type VIIC boat U-704". German U-boats of WWII - uboat.net. Retrieved 12 May 2012.

[FOOTNOTEGröner199143–46-2] 1 2 3 4 Gröner 1991, pp. 43–46.

[patrols-3] 1 2 3 Helgason, Guðmundur. "War Patrols by German U-boat U-704". German U-boats of WWII - uboat.net. Retrieved 12 May 2012.

[Blair1_p655-4] Blair Hitler's U-Boat War: The Hunters 1939–1942 2000, p. 655.

[Blair2_p107-5] Blair Hitler's U-Boat War: The Hunted 1942–1945 2000, p. 107.

[6] Helgason, Guðmundur. "Ships hit by U-704". German U-boats of WWII - uboat.net. Retrieved 9 February 2014.

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v t e German 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 May 1945
Shipwrecks	1 May: Argo , TA 43 , U-3006 , U-3009 2 May: Admiral Hipper , USS Thornton, U-8 , U-14 , U-60 , U-61 , U-62 , U-71 , U-72 , U-120 , U-121 , U-137 , U-139 , U-140 , U-141 , U-142 , U-146 , U-148 , U-151 , U-152 , U-316 , U-552 , U-554 , U-612 , U-717 , U-929 , U-1007 , U-1308 , U-2327 , U-2359 , U-2510 , U-2526 , U-2527 , U-2528 , U-2531 , U-3002 , U-3016 , U-3018 , U-3019 , U-3020 , U-3021 , U-3504 , U-3516 , U-3517 , U-3521 , U-3522 3 May: Arcona, Cap Arcona, Deutschland, Emden , USS Lagarto, USS Little, USS LSM(R)-195, Medusa, Nordland , Schlesien , TA22 , Thielbek, UA , UB , UD-1 , UD-2 , UD-3 , UD-4 , U-48 , U-52 , U-57 , U-58 , U-59 , U-101 , U-328 , U-339 , U-428 , U-446 , U-475 , U-560 , U-704 , U-708 , U-747 , U-748 , U-795 , U-822 , U-828 , U-876 , U-903 , U-922 , U-924 , U-958 , U-1166, U-1170 , U-1192 , U-1196 , U-1201 , U-1205 , U-1210 , U-1227 , U-1275 , U-2330 , U-2332 , U-2355 , U-2371 , U-2501 , U-2503 , U-2504 , U-2508 , U-2512 , U-2519 , U-2520 , U-2521 , U-2524 , U-2533 , U-2534 , U-2535 , U-2536 , U-2539 , U-2543 , U-2545 , U-2546 , U-2548 , U-2552 , U-3001 , U-3005 , U-3010 , U-3011 , U-3012 , U-3013 , U-3014 , U-3023 , U-3024 , U-3025 , U-3026 , U-3027 , U-3028 , U-3029 , U-3031 , U-3032 , U-3037 , U-3038 , U-3039 , U-3040 , U-3507 , U-3509 , U-3511 , U-3513 , U-3518 , U-3525 , U-3530 , U-4705 , U-4712 , Z43 4 May: USS LSM(R)-190, USS LSM(R)-194, USS Luce, USS Morrison, Orion , USS PGM-17, U-30 , U-46 , U-267 , U-393 , U-711 , U-721 , U-792 , U-793 , U-904 , U-1132 , U-1161 , U-1168 , U-1303 , U-1304 , U-2338 , U-2540 , U-3033 , U-3034 , U-4709 , U-4711 5 May: T36 , U-17 , U-38 , U-236 , U-290 , U-349 , U-351 , U-370 , U-397 , U-534 , U-579 , U-733 , U-746 , U-750 , U-794 , U-827 , U-999 , U-1008 , U-1016 , U-1025 , U-1056 , U-1162 , U-1193 , U-1204 , U-1207 , U-1223 , U-1234 , U-1306 , U-1405 , U-2333 , U-2339 , U-2343 , U-2346 , U-2347 , U-2349 , U-2352 , U-2357 , U-2358 , U-2360 , U-2362 , U-2364 , U-2366 , U-2367 , U-2368 , U-2369 , U-2507 , U-2517 , U-2522 , U-2525 , U-2541 , U-2544 , U-2551 , U-3015 , U-3022 , U-3044 , U-3501 , U-3510 , U-3524 , U-3526 , U-3527 , U-3528 , U-3529 , U-4701 , U-4702 , U-4703 , U-4704 , U-4707 , U-4710 6 May: U-853 , U-881 , U-3523 7 May: Avondale Park, Sneland I, U-1407 8 May: U-37 , U-320 , U-382 , U-2365 , U-2538 , U-3030 , U-3503 16 May: Haguro , Hatsutaka , U-287 18 May: USS Longshaw 20 May: U-963 24 May: HM Motor Gun Boat 2007, U-979 25 May: USS Bates, USS LSM-135 28 May: USS Drexler 29 May: Tenryo Maru 31 May: I-361, Uzbekistan
Other incidents	3 May: USS Aaron Ward 4 May: HMS Formidable, USS Sangamon 9 May: USS England, USS Oberrender 11 May: USS Bunker Hill, USS Evans, USS Hugh W. Hadley 19 May: Kashima, HMS Terrapin 20 May: USS Chase, USS Thatcher 25 May: USS Barry, USS Spectacle, William B. Allison 26 May: USS PC-1603 29 May: USS Shubrick 31 May: Hebrides Unknown date: Nymphe, U-1197
1944 1945 1946 April 1945 June 1945

History

Nazi Germany
Name	U-704
Ordered	9 October 1939^[1]
Builder	HC Stülcken & Sohn, Hamburg
Yard number	763
Laid down	26 August 1940^[1]
Launched	28 August 1941^[1]
Commissioned	18 November 1941^[1]
Fate	Scuttled on 30 April 1945^[1]
General characteristics
Class and type	Type VIIC submarine
Displacement	769 tonnes (757 long 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 × torpedoes 1 × 8.8 cm (3.46 in) deck gun (220 rounds) 1 x 2 cm (0.79 in) C/30 AA gun
Service record
Part of:	8th U-boat Flotilla 18 November 1941 – 30 June 1942 7th U-boat Flotilla 1 July 1942 – 1 April 1943 21st U-boat Flotilla 1 April – 31 May 1943 24th U-boat Flotilla 1 June – 31 August 1943 23rd U-boat Flotilla 1 September 1943 – 31 July 1944 21st U-boat Flotilla 1 August 1944 – 24 March 1945
Identification codes:	M 43 929
Commanders:	Oblt.z.S. / Kptlt. Horst Wilhelm Kessler 18 November 1941 – April 1943 Oblt.z.S. Karl-Heinz Hagenau 12 Jun 1943 – April 1944 Lt.z.S. Gerhard Ady April – July 1944 Oblt.z.S. Wolfgang Schwarzkopf 6 August – 18 December 1944 Oblt.z.S. Gerhard Nolte 19 December 1944 – 24 March 1945
Operations:	5 patrols:^[1] 1st patrol: 30 June – 16 August 1942 2nd patrol: 9 – 15 September 1942 3rd patrol: 5 October – 23 November 1942 4th patrol: a. 1 – 2 January 1943 b. 7 January – 12 February 1943 5th patrol: a. 14 March – 5 April 1943 b. 6 – 11 April 1943
Victories:	1 merchant ship sunk (6,942 GRT)^[1]