German submarine U-78 (1940)

History
Nazi Germany
Name	U-78
Ordered	25 January 1939
Builder	Bremer Vulkan, Bremen-Vegesack
Yard number	6
Laid down	28 March 1940
Launched	7 December 1940
Commissioned	15 February 1941
Fate	Sunk on 16 April 1945 by Soviet artillery fire.
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	2 × 53.3 cm (21 in) torpedo tubes (bow); 14 × torpedoes or 26 TMA mines ; 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:	22nd U-boat Flotilla ; 15 February 1941 – 28 February 1945; 4th U-boat Flotilla ; 1 March – 16 April 1945;
Identification codes:	M 29 850
Commanders:	Kptlt. Adolf Dumrese; 15 February – July 1941; Oblt.z.S. Kurt Makowski; July 1941 – February 1942; Kptlt. Max Bernd Dieterich; February – 30 June 1942; Kptlt. Ernst Ziehm; 1 July – November 1942; Kptlt. Helmut Sommer; November 1942 – 16 May 1943; Oblt.z.S. Wilhelm Eisele; 17 May 1943 – 26 November 1944; Oblt.z.S. Horst Hübsch; 27 November 1944 – 16 April 1945;
Operations:	None
Victories:	None

Last updated March 06, 2024

German submarine U-78 was a Type VIIC submarine of Nazi Germany's Kriegsmarine during World War II. She was the only German submarine to be sunk by land-based artillery fire during the war. Built by Bremen-Vegesack.

She was ordered on 25 January 1939, and laid down on 28 March 1940, in the shipyard of Bremer Vulkan in the port city of Bremen-Vegesack as yard number 6. U-78 was launched on 7 December 1940 and formally commissioned into the Kriegsmarine as a "school boat" on 15 February 1941, with a crew of 41 under the command of Kapitänleutnant Alfred Dumrese.^[1]

Design

German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-78 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 MAN M 6 V 40/46 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 Brown, Boveri & Cie GG UB 720/8 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).^[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-78 was fitted with two 53.3 cm (21 in) torpedo tubes at the bow, 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-78 spent the majority of her career as a training U-boat, during which time she had several different crews. As a result, she never sank any enemy vessels nor engaged any enemy ships or convoys. On 1 March 1945, she was transferred to the 4th U-boat Flotilla but never saw any combat; prior to beginning her first patrol she was sunk on 16 April 1945. U-78's fate is notable in that she was the only German U-boat to be sunk by land-based artillery fire during World War II.^[1]^[3]

Use as a training boat

U-78 spent almost her entire career as part of the 22nd U-boat Flotilla as a "school boat", a role which saw her being used to train U-boat crews. During this time, her commander was changed six times: in July 1941 from Kapitänleutnant (Kptlt.) Alfred Dumrese to Oberleutnant zur See (O/L) Kurt Makowski, who remained in command until February 1942 when she was handed over to Kptlt. Max Bernd Dieterich; in July 1942, Kptlt. Ernst Ziehm took command of the U-boat from Dieterich in November 1942. Kptlt. Helmut Sommer took command from Ziehm in May 1943; the sixth commander of U-78 took control of the U-boat when Wilhelm Eisele was named captain and lastly, the seventh commander, O/L Horst Hübsch, took command of U-78 from Eisele on 27 November 1944. All of U-78's changes of command took place while the U-boat was still serving as a training boat. Crewmembers used her as a practice submarine before being assigned to their operational U-boat.^[1]

Sinking

By March 1945, the war was coming to an end, the Kriegsmarine was faced with a dwindling number of active U-boats. To offset this, the Navy looked to transfer boats away from other duties, such as training. On 1 March 1945, U-78 began active service with the 4th U-boat Flotilla. Just a month and a half later, however, on 16 April 1945, U-78 was sunk after being attacked by Soviet land-based artillery while she was docked near the electricity supply pier in the German port of Pillau in East Prussia.^[1]

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References

1 2 3 4 5 6 Helgason, Guðmundur. "The Type VIIC boat U-78". German U-boats of WWII - uboat.net. Retrieved 14 March 2010.
1 2 3 4 Gröner 1991, pp. 43–46.
↑ Helgason, Guðmundur. "U-boat losses by cause". German U-boats of WWII - uboat.net. Retrieved 14 March 2010.

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-78". German U-boats of WWII - uboat.net. Retrieved 26 December 2014.
Hofmann, Markus. "U 78". Deutsche U-Boote 1935–1945 – u-boot-archiv.de (in German). Retrieved 26 December 2014.

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Text is available under the CC BY-SA 4.0 license; additional terms may apply.
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[U-78-1] 1 2 3 4 5 6 Helgason, Guðmundur. "The Type VIIC boat U-78". German U-boats of WWII - uboat.net. Retrieved 14 March 2010.

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

[sink-3] Helgason, Guðmundur. "U-boat losses by cause". German U-boats of WWII - uboat.net. Retrieved 14 March 2010.

[1]

[2]

[3]

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 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 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 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
1944 1945 1946 March 1945 May 1945

History
Nazi Germany
Name	U-78
Ordered	25 January 1939
Builder	Bremer Vulkan, Bremen-Vegesack
Yard number	6
Laid down	28 March 1940
Launched	7 December 1940
Commissioned	15 February 1941
Fate	Sunk on 16 April 1945 by Soviet artillery fire.^[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	2 × 53.3 cm (21 in) torpedo tubes (bow) 14 × torpedoes or 26 TMA mines 1 × 8.8 cm (3.46 in) deck gun (220 rounds) 1 x 2 cm (0.79 in) C/30 AA gun
Service record^[1]
Part of:	22nd U-boat Flotilla 15 February 1941 – 28 February 1945 4th U-boat Flotilla 1 March – 16 April 1945
Identification codes:	M 29 850
Commanders:	Kptlt. Adolf Dumrese 15 February – July 1941 Oblt.z.S. Kurt Makowski July 1941 – February 1942 Kptlt. Max Bernd Dieterich February – 30 June 1942 Kptlt. Ernst Ziehm 1 July – November 1942 Kptlt. Helmut Sommer November 1942 – 16 May 1943 Oblt.z.S. Wilhelm Eisele 17 May 1943 – 26 November 1944 Oblt.z.S. Horst Hübsch 27 November 1944 – 16 April 1945
Operations:	None
Victories:	None