German submarine U-764

History

Nazi Germany
Name:	U-764
Ordered:	15 August 1940
Builder:	Kriegsmarinewerft Wilhelmshaven
Yard number:	147
Laid down:	1 February 1941
Launched:	13 March 1943
Commissioned:	6 May 1943
Fate:	Surrendered on 14 May 1945 at Loch Eriboll, Scotland. She was later sunk, as part of Operation Deadlight in position 56°06′N 09°00′W / 56.100°N 9.000°W / 56.100; -9.000Coordinates: 56°06′N 09°00′W / 56.100°N 9.000°W / 56.100; -9.000, on 2 February 1946.
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
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:	4officers, 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) various AA guns
Service record^[1]
Part of:	8th U-boat Flotilla 6 May – 31 October 1943 - Training 9th U-boat Flotilla 1 November 1943 – 30 September 1944 11th U-boat Flotilla 1 October 1944 – 8 May 1945
Commanders:	Oblt.z.S. Hanskurt von Bremen 6 May 1943 – 14 May 1945
Operations:	1st patrol: 26 October – 11 December 1943 2nd patrol: 17 January – 15 March 1944 3rd patrol: 26–28 April 1944 4th patrol: 6–23 June 1944 5th patrol: 6 August – 19 September 1944 6th patrol: 26 December 1944 – 4 February 1945 7th patrol: 19–23 March 1945 8th patrol: 26 April – 14 May 1945
Victories:	1 merchant ship sunk (638 GRT) 2 warships sunk (1,696 tons)

German submarine U-764 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II. She was laid down on 1 February 1941 by Kriegsmarinewerft Wilhelmshaven as yard number 147, launched on 13 March 1943 and commissioned on 6 May 1943 under Oberleutnant zur See Hanskurt von Bremen.

Design

German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-764 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 Garbe, Lahmeyer & Co. RP 137/c 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-764 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 an anti-aircraft gun. The boat had a complement of between forty-four and sixty.^[2]

Service history

The boat's career began with training at 8th U-boat Flotilla on 6 May 1943, followed by active service on 1 November 1943 as part of the 9th Flotilla in Brest, France. On 1 October 1944, she transferred to 11th Flotilla in Bergen, Norway; as the situation worsened in France following the invasion. She remained with 11th Flotilla until her surrender at the end of the war.

In eight patrols she sank one merchant ship, for a total of 638 gross register tons (GRT), and 2 warships sunk (1,696 tons).

Wolfpacks

U-764 took part in eight wolfpacks, namely

Eisenhart 3 (9–15 November 1943)
Schill 3 (18–22 November 1943)
Weddigen (22–29 November 1943)
Hinein (26 January – 3 February 1944)
Igel 1 (3–17 February 1944)
Hai 1 (17–22 February 1944)
Preussen (22 February – 13 March 1944)
Dragoner (21–28 May 1944)

Fate

U-764 surrendered on 14 May 1945 at Loch Eriboll, Scotland. She was sunk as a target in position 56°06′N 09°00′W / 56.100°N 9.000°W / 56.100; -9.000 as part of Operation Deadlight on 2 February 1946.

Summary of raiding history

Date	Name	Nationality	Tonnage^{[Note 1]}	Fate^[3]
15 June 1944	HMS Blackwood	Royal Navy	1,085	Sunk
20 August 1944	Coral	United Kingdom	638	Sunk
25 August 1944	HMS LCT-1074	Royal Navy	611	Sunk

References

Notes

↑ Merchant ship tonnages are in gross register tons. Military vessels are listed by tons displacement.

Citations

↑ Helgason, Guðmundur. "The Type VIIC boat U-764". German U-boats of WWII - uboat.net. Retrieved 10 September 2014.
1 2 3 4 Gröner 1991, pp. 43-46.
↑ Helgason, Guðmundur. "Ships hit by U-764". German U-boats of WWII - uboat.net. Retrieved 10 September 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). 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. 2. Translated by Thomas, Keith; Magowan, Rachel. London: Conway Maritime Press. ISBN 0-85177-593-4.
Sharpe, Peter (1998). U-Boat Fact File. Great Britain: Midland Publishing. ISBN 1-85780-072-9.

External links

Helgason, Guðmundur. "The Type VIIC boat U-764". German U-boats of WWII - uboat.net. Retrieved 29 December 2014.
Hofmann, Markus. "U 764". Deutsche U-Boote 1935-1945 - u-boot-archiv.de (in German). Retrieved 29 December 2014.

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-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

Shipwrecks and maritime incidents in 1946

Shipwrecks	1 Jan: USS Dorsey 2 Jan: U-516, U-2502 3 Jan: Empire Tigachi, U-825, U-2336, U-2351 5 Jan: U-541, U-901, U-2506 6 Jan: U-1109, U-2356 7 Jan: U-1010, U-1023, U-2511 8 Jan: HMS Safari 14 Jan: USS Snowbell, USS Southard 28 Jan: Bluenose January (unknown date): Akagi Maru 2 Feb: U-764 3 Feb: I-505 5 Feb: U-1228 10 Feb: U-975 12 Feb: I-501, U-3514 14 Feb: Fulham VII 15 Feb: I-502, I-506 February (unknown date): U-1197 1 Mar: Sackett's Harbor 4 Mar: USS Extricate 11 Mar: USS Roche 16 Mar: Karl Leonhardt 26 Mar: Z34 1 Apr: I-58, I-156, I-157, I-158, I-159, I-402 4 Apr: USS S-35 5 Apr: I-202 8 Apr: USS Despatch 9 Apr: Empire Bridge 16 Apr: I-503, I-504 21 Apr: Empire Christopher 30 Apr: RO-500, USS Solar, HMS Stubborn, HMAS Tolga 8 May: I-153, I-154, I-155 14 May: USS Bellona 23 May: I-201 24 May: DD-224 (ex-USS Stewart) 28 May: I-14 31 May: I-401 4 Jun: I-400, Kunashiri 7 Jun: Kamikaze 8 Jun: Myōkō 9 Jun: USS Solar 1 Jul: USS Anderson, USS Carlisle, USS Gilliam, USS Lamson, Sakawa 25 Jul: USS Apogon, USS Arkansas, USS LSM-60, USS Pilotfish, USS Saratoga, USS Skipjack 30 Jul: Nagato 2 Aug: Empire Cross 19 Sep: Ohio 17 Oct: HMAS Waree 19 Oct: Takao 13 Nov: U-977 20 Nov: Albany 27 Nov: Lasknes 2 Dec: HMCS Middlesex 8 Dec: Liberté, HMS Saltburn 16 Dec: Leipzig, Z29 22 Dec: Prinz Eugen 26 Dec: USAT Brigadier General M. G. Zalinski 31 Dec: Monte Pascoal, Schwabenland

Other incidents	14 Feb: Alfred Victory 8 May: HMS Orion (Corfu Channel incident), HMS Superb (Corfu Channel incident) 15 May: HMS Diomede 1 Jul: Prinz Eugen 25 Jul: Nagato ,Prinz Eugen Jul: Patrick Henry 22 Oct: HMS Mauritius (Corfu Channel incident), HMS Leander (Corfu Channel incident);HMS Saumarez (Corfu Channel incident), HMS Volage (Corfu Channel incident) 12 Nov: HMS Ocean (Corfu Channel incident) 8 Dec: Empire Eden

1945 1947 December 1945

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