German submarine U-676

History
Nazi Germany
Name	U-676
Ordered	5 June 1941
Builder	Howaldtswerke, Hamburg
Yard number	825
Laid down	13 June 1942
Launched	6 July 1943
Commissioned	4 August 1943
Fate	Sunk by mine in the Gulf of Finland after 12 February 1945
General characteristics
Class and type	Type VIIC submarine
Displacement	769 t (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 × torpedo tubes (four bow, one stern); 14 × 53.3 cm (21 in) torpedoes or 26 TMA mines ; 2 × 3.7 cm (1.5 in) Flak M42 AA gun ; 2 × twin 2 cm (0.79 in) C/30 anti-aircraft guns ;
Service record
Part of:	5th U-boat Flotilla ; 4 August 1943 – 31 August 1944; 8th U-boat Flotilla ; 1 September 1944 – 12 February 1945;
Identification codes:	M 54 607
Commanders:	Oblt.z.S. / Kptlt. Werner Sass; 4 August 1943 – 12 February 1945;
Operations:	2 patrols:; 1st patrol:; 3 September – 25 October 1944; 2nd patrol:; 20 January – 12 February 1945;
Victories:	None

Last updated March 18, 2024

German submarine U-676 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II. The submarine was laid down on 13 June 1942 at the Howaldtswerke yard at Hamburg, launched on 6 July 1943, and commissioned on 4 August 1943 under the command of Oberleutnant zur See Werner Sass.

Design

German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-676 had a displacement of 769 tonnes (757 long tons) when at the surface and 871 tonnes (857 long tons) while submerged.^[1] 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 Siemens-Schuckert GU 343/38–8 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).^[1]

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).^[1] 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-676 was fitted with five 53.3 cm (21 in) torpedo tubes (four fitted at the bow and one at the stern), fourteen torpedoes, two 3.7 cm (1.5 in) Flak M42 and two twin 2 cm (0.79 in) C/30 anti-aircraft guns. The boat had a complement of between forty-four and sixty.^[1]

Service history

On the second and final patrol, U-676 was last heard of on 12 February 1945 while operating in the Gulf of Finland.^[2] In 2012 the wreck of U-676 was detected in position 59°30′N23°0′E / 59.500°N 23.000°E / 59.500; 23.000 . In the vicinity a mine barrage, Vantaa 3, had been laid by the Finnish minelayer Louhi and Ruotsinsalmi on 12 January 1945. All 57 crew members perished in the event.^[3]

Related Research Articles

German submarine U-551 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II. The submarine was laid down on 21 November 1939 at the Blohm & Voss yard in Hamburg as yard number 527, launched on 14 September 1940, and commissioned on 7 November 1940 under the command of Kapitänleutnant Karl Schrott.

German submarine U-1302 was a Type VIIC/41 U-boat of Nazi Germany's Kriegsmarine for service in World War II. She was commissioned on 25 May 1944.

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German submarine U-304 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II. She saw service in the Atlantic Ocean and Mediterranean Sea. Built in 1941 and 1942 at Flender-Werke, Lübeck, U-304 was a Type VIIC U-boat, capable of lengthy ocean patrols and of operating in distant environments.

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German submarine U-922 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II.

German submarine U-926 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II.

German submarine U-975 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II.

German submarine U-1056 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II.

German submarine U-1162 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II.

German submarine U-1192 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II.

German submarine U-1194 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II.

German submarine U-1196 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II.

German submarine U-1197 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II.

German submarine U-1201 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II.

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References

1 2 3 4 Gröner 1991, pp. 43–46.
↑ Busch & Röll 1999, p. 315.
↑ Helgason, Guðmundur. "The Type VIIC boat U-676". German U-boats of WWII - uboat.net. Retrieved 23 July 2015.

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). 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.

External links

Helgason, Guðmundur. "The Type VIIC boat U-676". German U-boats of WWII - uboat.net. Retrieved 23 July 2015.

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

[FOOTNOTEBuschRöll1999315-2] Busch & Röll 1999, p. 315.

[3] Helgason, Guðmundur. "The Type VIIC boat U-676". German U-boats of WWII - uboat.net. Retrieved 23 July 2015.

[1]

[2]

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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 February 1945
Shipwrecks	1 Feb: Ro-115 3 Feb: U-1279 4 Feb: USS Barbel, U-1014 5 Feb: MV Gay Viking, Karatsu 6 Feb: Peter Silvester 7 Feb: CD-53, Ro-55 9 Feb: U-864 , U-923 10 Feb: Steuben 11 Feb: Persier, Ro-112, U-869 13 Feb: HMS Denbigh Castle, Ha-76 , Ro-113 14 Feb: U-989 15 Feb: U-1053 16 Feb: U-309 17 Feb: HMS Bluebell, Impero , U-425 , U-1273 , U-1278, HMS Lark 18 Feb: Sperrbrecher 139, U-2344 20 Feb: Nokaze , TA 48 , HMS Vervain, U-1276 , USS S-37, USS S-38 21 Feb: USS Bismarck Sea, Dettifoss 22 Feb: HMCS Trentonian, U-300 23 Feb: Conte di Cavour , Henry Bacon, La Combattante , Point Pleasant Park 24 Feb: I-371, U-713 , U-927 , U-1208 , U-3007 26 Feb: Arsterturm, I-368, I-370, Ro-43 27 Feb: Corvus, U-327 , U-1018 , U-1279 28 Feb: Lautaro Unknown date: U-676 , U-683
Other incidents	9 Feb: Kommandøren 10 Feb: USS Batfish 11 Feb: HMS Pathfinder 15 Feb: SS Charles F. Amidon, USS Crevalle 17 Feb: Conte di Cavour 18 Feb: Empire Duchess , USS Gamble, U-2336
1944 1945 1946 January 1945 March 1945

History

Nazi Germany
Name	U-676
Ordered	5 June 1941
Builder	Howaldtswerke, Hamburg
Yard number	825
Laid down	13 June 1942
Launched	6 July 1943
Commissioned	4 August 1943
Fate	Sunk by mine in the Gulf of Finland after 12 February 1945
General characteristics
Class and type	Type VIIC submarine
Displacement	769 t (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 × torpedo tubes (four bow, one stern) 14 × 53.3 cm (21 in) torpedoes or 26 TMA mines 2 × 3.7 cm (1.5 in) Flak M42 AA gun 2 × twin 2 cm (0.79 in) C/30 anti-aircraft guns
Service record
Part of:	5th U-boat Flotilla 4 August 1943 – 31 August 1944 8th U-boat Flotilla 1 September 1944 – 12 February 1945
Identification codes:	M 54 607
Commanders:	Oblt.z.S. / Kptlt. Werner Sass 4 August 1943 – 12 February 1945
Operations:	2 patrols: 1st patrol: 3 September – 25 October 1944 2nd patrol: 20 January – 12 February 1945
Victories:	None