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German submarineU-636

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Coordinates:55°50′N10°31′W / 55.833°N 10.517°W /55.833; -10.517

From Wikipedia, the free encyclopedia

German World War II submarine

History

Nazi Germany
Name	U-636
Ordered	20 January 1941
Builder	Blohm & Voss,Hamburg
Yard number	612
Laid down	2 October 1941
Launched	25 June 1942
Commissioned	20 August 1942
Fate	Sunk on 21 April 1945
General characteristics
Class & 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
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	17.7knots (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 × twin2 cm (0.79 in) C/30 anti-aircraft gun
Service record^[1]
Part of:	5th U-boat Flotilla 20 August 1942 – 31 March 1943 11th U-boat Flotilla 1 April – 31 October 1943 13th U-boat Flotilla 1 November 1943 – 21 April 1945
Identification codes:	M 51 601
Commanders:	Kptlt. Hans Hildebrandt 20 August 1942 – 14 February 1944 Oblt.z.S. Eberhard Schendel 15 February 1944 – 21 April 1945
Operations:	15 patrols: 1st patrol: a. 2 May – 8 June 1943 b. 24 – 27 July 1943 c. 28 – 31 July 1943 2nd patrol: a. 31 July – 7 August 1943 b. 14 – 16 August 1943 3rd patrol: a. 17 – 30 August 1943 b. 5 – 9 September 1943 c. 24 – 25 October 1943 d. 27 – 31 October 1943 e. 2 – 3 November 1943 4th patrol: a. 6 – 17 November 1943 b. 18 – 19 November 1943 c. 21 – 22 November 1943 5th patrol: 23 November – 27 December 1943 6th patrol: 30 December 1943 – 8 January 1944 7th patrol: a. 26 January – 2 February 1944 b. 4 – 5 February 1944 c. 8 – 11 February 1944 d. 31 March – 2 April 1944 8th patrol: a. 8 April – 3 May 1944 b. 5 – 7 May 1944 c. 23 – 24 June 1944 9th patrol: a. 27 June – 23 July 1944 b. 24 July 1944 10th patrol: a. 25 August – 12 September 1944 b. 16 – 18 September 1944 11th patrol: 25 September – 3 October 1944 12th patrol: a. 6 October – 12 November 1944 b. 14 – 16 November 1944 13th patrol: 4 – 16 December 1944 14th patrol: a. 25 December 1944 – 30 January 1945 b. 1 – 3 February 1945 15th patrol: 1 – 21 April 1945
Victories:	1 merchant ship sunk (7,169 GRT)

German submarineU-636 was aType VIIC U-boat built forNazi Germany'sKriegsmarine for service duringWorld War II.She waslaid down on 2 October 1941 byBlohm & Voss,Hamburg as yard number 612,launched on 25 June 1942 andcommissioned on 20 August 1942 underOberleutnant zur See Hans Hildebrandt.

Design

[edit]

German Type VIIC submarines were preceded by the shorterType VIIB submarines.U-636 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-636 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 one twin2 cm (0.79 in) C/30 anti-aircraft gun. The boat had acomplement of between forty-four and sixty.^[2]

Service history

[edit]

The boat's career began with training at5th U-boat Flotilla on 20 August 1942, followed by active service on 1 April 1943 as part of the11th Flotilla, operating fromBergen, Norway. Just six months later, she transferred to13th Flotilla stationed in Trondheim, Norway, for the remainder of her service.

In 15 patrols she sank one merchant ship, for a total of 7,169 gross register tons (GRT).

On 14 May 1943, after being attacked by depth charges fromHMS Duncan andHMS Snowflake (K211) she suffered minor damage.^[3]

Fate

[edit]

U-636 was sunk on 21 April 1945 in the North Atlantic in position55°50′N10°31′W / 55.833°N 10.517°W /55.833; -10.517, by depth charges fromHMS Bazely,HMS Drury andHMS Bentinck. All hands were lost.

Wolfpacks

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U-636 took part in eleven wolfpacks, namely:

Iller (12 – 15 May 1943)
Donau 1 (15 – 26 May 1943)
Isegrim (1 – 7 January 1944)
Donner (11 – 20 April 1944)
Donner & Keil (20 April – 2 May 1944)
Trutz (28 June – 10 July 1944)
Dachs (1 – 5 September 1944)
Zorn (26 September – 1 October 1944)
Grimm (1 – 2 October 1944)
Panther (16 October – 10 November 1944)
Stier (4 – 15 December 1944)

Summary of raiding history

[edit]

Date	Ship Name	Nationality	Tonnage (GRT)	Fate^[4]
6 September 1943	Tbilisi	Soviet Union	7,169	Sunk

References

[edit]

^Helgason, Guðmundur."The Type VIIC boat U-636".German U-boats of WWII - uboat.net. Retrieved31 August 2014.
^^a ^b ^c ^dGröner 1991, pp. 43–46.
^Niestlé, Axel (30 June 2014).German U-Boat Losses During World War II. Frontline Books. p. 41.ISBN 978-1-4738-3829-1.
^Helgason, Guðmundur."Ships hit by U-636".German U-boats of WWII - uboat.net. Retrieved31 August 2014.

Bibliography

[edit]

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).Der U-Boot-Krieg, 1939-1945: Deutsche U-Boot-Verluste von September 1939 bis Mai 1945 [German U-boat losses from September 1939 to May 1945] (in German). Vol. IV. Hamburg, Berlin, Bonn: Mittler.ISBN 3-8132-0514-2.
Gröner, Eric; 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.
Sharpe, Peter (1998).U-Boat Fact File. Great Britain: Midland Publishing.ISBN 1-85780-072-9.

External links

[edit]

Helgason, Guðmundur."The Type VIIC boat U-636".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 April 1945
Shipwrecks	1 Apr: Awa Maru 2 Apr: CD-186,USS Dickerson,U-321 3 Apr: Brummer,USS S-16,U-1221,U-2542,U-3505,T111 4 Apr: USS Dickerson,U-237,U-749,U-3003 5 Apr: U-242,USS S-17 6 Apr: Amatsukaze,USS Bush,USS Colhoun,USS Leutze,USS Morris,USS Newcomb,USS Witter,SS Hobbs Victory,SS Logan Victory 7 Apr: Asashimo,Hamakaze,Isokaze,Isuzu,Kasumi,USS LST-447,Oldenburg,USS PGM-18,U-1195,Yahagi,Yamato 8 Apr: U-774,U-1001 9 Apr: Admiral Scheer,Ro-56,U-677,U-747,U-804,U-843,U-982,U-1065,U-2509,U-2514,U-3512,U-2516,Vale 10 Apr: U-878,Weser 12 Apr: USS Mannert L. Abele,Ro-64,U-486 13 Apr: Karlsruhe,U-1024 14 Apr: Belgian Airman,U-235,U-1206 15 Apr: U-103,U-285,U-1063,U-1235 16 Apr: HMCS Esquimalt,Lützow,USS Pringle,U-78,U-880,U-1274 17 Apr: Goya 19 Apr: Aquila,U-251,U-548,U-879 21 Apr: U-636 22 Apr: USS Swallow,U-518 23 Apr: USS Eagle Boat 56,U-183 24 Apr: USS Frederick C. Davis,U-108,U-546 25 Apr: Graf Zeppelin,Ro-109,TA 32,U-326 27 Apr: Canada Victory,TA 34 28 Apr: CH-17,U-56 29 Apr: I-44,U-56,U-286,U-307,U-1017,Ursus 30 Apr: HMS Goodall,TA 43,U-879,U-1107 Unknown date: I-56,Ro-46,Ro-49,USS Snook,U-246,U-325,U-396,U-398,U-548,U-857,U-1055
Other incidents	2 Apr: USS Dickerson 5 Apr: USS Thornton 6 Apr: USS Defense,USS Emmons,USS Mullany,USS Rodman 8 Apr: USS Bullhead 9 Apr: USS Sea Devil 11 Apr: I-401 12 Apr: USS Lindsey,U-1024,USS Zellars 14 Apr: USS Sigsbee 15 Apr: HMS Ekins,USS Laffey 16 Apr: USS Bryant,Goya,USS Harding 19 Apr: USS Bullhead,USS Pogy,USS Tolman 27 Apr: HMS Redmill 28 Apr: Argo,USS Huron 29 Apr: USS Baya 30 Apr: U-3525
194419451946 March 1945May 1945