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German submarineU-420

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Coordinates:48°00′N21°00′W / 48.000°N 21.000°W /48.000; -21.000

From Wikipedia, the free encyclopedia

German World War II submarine

History
U-995, a Type VIIC U-boat at the German naval memorial atLaboe which was almost identical toU-420
Nazi Germany
Name	U-420
Ordered	20 January 1941
Builder	Danziger Werft AG, Danzig
Yard number	121
Laid down	3 December 1941
Launched	18 August 1942
Commissioned	16 December 1942
Fate	Missing in theNorth Atlantic since 20 October 1943
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
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	17.7knots (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 ×torpedoes 1 ×8.8 cm (3.46 in) deck gun (220 rounds) 2 × twin2 cm (0.79 in) C/30 anti-aircraft guns
Service record^[1]
Part of:	8th U-boat Flotilla 16 December 1942 – 30 June 1943 11th U-boat Flotilla 1 July – 20 October 1943
Identification codes:	M 49 312
Commanders:	Oblt.z.S. Hans-Jürgen Reese 16 December 1942 – 20 October 1943
Operations:	2 patrols: 1st patrol: a. 12 June – 16 July 1943 b. 7 – 8 October 1943 2nd patrol: 9 – 20 October 1943
Victories:	None

German submarineU-420 was aType VIIC U-boat built for theKriegsmarine for service duringWorld War II. She waslaid down in the Danziger Werft as yard number 121,launched on 18 August 1942 andcommissioned on 16 December the same year underOberleutnant zur See Peter Högqvist. She then joined the8th U-boat Flotilla for training before transferring to the11th flotilla for operations.

Design

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German Type VIIC submarines were preceded by the shorterType VIIB submarines.U-420 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, twoSiemens-Schuckert GU 343/38–8double-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-420 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 two twin2 cm (0.79 in) C/30 anti-aircraft guns. The boat had acomplement of between forty-four and sixty.^[2]

Service history

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First patrol

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U-420's first patrol involved her leavingKiel on 12 June 1943 and arriving atLorient in occupied France on 16 June 1943, having hugged the Norwegian coast and sailed around the north of Scotland. She then crossed the Atlantic, but was attacked on 3 July by a CanadianB-24 Liberator. The boat was hit by aFido homing torpedo which killed two men and wounded a third. The boat sustained enough damage to force the patrol to be cut short.^[3]

Second patrol and loss

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Following a short transit voyage from Lorient toBrest,U-420 set off on her second patrol on 9 October 1943. After 20 October, she was never heard from again and her fate remains an unsolved mystery.^[4]

Previously recorded fate

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A postwar assessment stated thatU-420 was sunk on October 26, 1943 in the North Atlantic at position50°49′N41°01′W / 50.817°N 41.017°W /50.817; -41.017 by depth charges from a Canadian B-24 Liberator of RCAF Squadron 10/A. This attack was actually againstU-91, inflicting no damage.

References

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^Helgason, Guðmundur."The Type VIIC boat U-420".German U-boats of WWII - uboat.net. Retrieved16 September 2012.
^^a ^b ^c ^dGröner 1991, pp. 43–46.
^Helgason, Guðmundur."Patrol of German U-boat U-420 from 12 Jun 1943 to 16 Jul 1943".German U-boats of WWII - uboat.net. Retrieved27 December 2014.
^Helgason, Guðmundur."Patrol of German U-boat U-420 from 9 October 1943 to 20 October 1943".German U-boats of WWII - uboat.net. Retrieved27 December 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

[edit]

Helgason, Guðmundur."The Type VIIC boat U-420".German U-boats of WWII - uboat.net. Retrieved26 December 2014.

48°00′N21°00′W / 48.000°N 21.000°W /48.000; -21.000

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 October 1943
Shipwrecks	1 Oct:Empire Commerce 3 Oct:USS Henley,HMS Usurper 4 Oct:U-279,U-389,U-422,U-460 5 Oct:USS LST-448,Sposobny 6 Oct:Yūgumo 7 Oct:USS Chevalier,USS S-44 8 Oct:Dainichi Maru,ORP Orkan,U-419,U-610,U-643 9 Oct:USS Buck,HMS Panther 11 Oct:HMS Hythe,Mario Roselli,USS Wahoo,Jalabala 13 Oct:USS Bristol,U-402 16 Oct:USS Moonstone,U-470, 'U-533,U-844,U-964 17 Oct:Michel,U-540,U-631,U-841 19 Oct:Sinfra 20 Oct:U-378 21 Oct:HMCS Chedabucto,USS Murphy,SS Tivives,U-431 22 Oct:HMS Hurworth 23 Oct:Campos,HMS Charybdis,Taranto,U-274 24 Oct:HMS Eclipse,HMS Orlionoch,Mochizuki,U-566 26 Oct:James Longstreet 28 Oct:U-220,USS YP-88 29 Oct:U-282 31 Oct:U-306,U-584,U-732 Unknown date:USS Dorado,Sebastiano Caboto,HMS Trooper,U-420
Other incidents	5 Oct:Ro-40 6 Oct:I-183 9 Oct:HMS Carlisle,Cuxhaven 10 Oct:Mario Roselli,Minerve 21 Oct:Rakuto Maru 22 Oct:Adrias 23 Oct:James Iredell
194219431944 September 1943November 1943

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