German submarine U-678
| Career (Nazi Germany) |  |
|---|---|
| Name: | U-678 |
| Ordered: | 5 June 1941 |
| Builder: | Howaldtswerke, Hamburg |
| Yard number: | 827 |
| Laid down: | 3 September 1942 |
| Launched: | 18 September 1943 |
| Commissioned: | 25 October 1943 |
| Fate: | Sunk 7 July 1944 in the English Channel in position 50°32′N 00°23′W / 50.533°N 0.383°W, by depth charges from HMCS Ottawa, HMCS Kootenay and HMS Statice. |
| General characteristics [1] | |
| Class and type: | Type VIIC submarine |
| Displacement: | 769 tonnes (757 long tons) surfaced 871 t (857 long tons) submerged |
| Length: | 67.1 m (220 ft 2 in) o/a 50.5 m (165 ft 8 in) pressure hull |
| Beam: | 6.2 m (20 ft 4 in) o/a 4.7 m (15 ft 5 in) pressure hull |
| Draft: | 4.74 m (15 ft 7 in) |
| Propulsion: | 2 × supercharged Germaniawerft 6-cylinder 4-stroke F46 diesel engines, totalling 2,800–3,200 bhp (2,100–2,400 kW). Max rpm: 470-490 2 × BBC GG UB 720/8 electric motors, totalling 750 shp (560 kW) and max rpm: 296 |
| 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: | 44–52 officers & ratings |
| Armament: | 5 × 53.3 cm (21 in) torpedo tubes (4 bow, 1 stern) 14 × torpedoes 1 × 8.8 cm (3.46 in) deck gun (220 rounds) Various AA guns |
| Service record[2] | |
|---|---|
| Part of: |
5th U-boat Flotilla (25 October 1943 - 31 May 1944) - Training 7th U-boat Flotilla (1 June 1944 - 7 July 1944) |
| Commanders: |
Oblt.z.S. Guido Hyronimus (25 October 1943 - 7 July 1944) |
| Operations: |
1st patrol: 8 June 1944 - 6 July 1944 |
| Victories: | None |
German submarine U-678 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II. She was laid down on 3 September 1942 by Howaldtswerke, Hamburg as yard number 827, launched on 18 September 1943 and commissioned on 25 October 1943 under Oberleutnant zur See Guido Hyronimus.
Service History
The boat's career began with training at 5th U-boat Flotilla on 25 October 1943, followed by active service on 1 June 1944 as part of the 7th Flotilla for the remainder of her short service.
In 1 patrol she sank no ships.
Fate
U-678 was sunk on 7 July 1944 in the English Channel in position 50°32′N 00°23′W / 50.533°N 0.383°W, by depth charges from Canadian destroyers HMCS Ottawa, HMCS Kootenay and Royal Navy corvette HMS Statice. All hands were lost.
References
- ↑ Gröner 1985, pp. 72-74.
- ↑ Helgason, Guðmundur. "The Type VIIC boat U-678". German U-boats of WWII - uboat.net. Retrieved 12 November 2014.
Bibliography
- Busch, Rainer; Röll, Hans-Joachim (1999). Deutsche U-Boot-Verluste von September 1939 bis Mai 1945. Der U-Boot-Krieg (in German) IV (Hamburg, Berlin, Bonn: Mittler). ISBN 3-8132-0514-2.
- Gröner, Erich (1985). U-Boote, Hilfskreuzer, Minenschiffe, Netzleger, Sperrbrecher. Die deutschen Kriegsschiffe 1815–1945 (in German) III (Koblenz: Bernard & Graefe). ISBN 3-7637-4802-4.
- 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-678". German U-boats of WWII - uboat.net. Retrieved 29 December 2014.