German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-677 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 superchargeddiesel 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-677 was fitted with five 53.3 cm (21 in) torpedo tubes (four fitted at the bow and one at the stern), fourteen torpedoes, one 8.8 cm (3.46 in) SK C/35 naval gun, (220 rounds), one 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 historyedit
During a British air raid on Hamburg on 5 April 1945, U-677 was damaged while in the Howaldtswerke yard. In a second air raid four days later, U-677 as well as another U-boat, U-982, sank in the U-boat pen Fink II.[2]
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. ISBN1-55750-186-6.
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] (in German). Vol. IV. Hamburg, Berlin, Bonn: Mittler. ISBN3-8132-0514-2. {{cite book}}: |work= ignored (help)
Gröner, Erich; Jung, Dieter; Maass, Martin (1991). U-boats and Mine Warfare Vessels. Vol. 2. Translated by Thomas, Keith; Magowan, Rachel. London: Conway Maritime Press. ISBN0-85177-593-4. {{cite book}}: |work= ignored (help)
External linksedit
Helgason, Guðmundur. "The Type VIIC boat U-677". German U-boats of WWII - uboat.net. Retrieved 23 July 2015.
german, submarine, type, viic, boat, nazi, germany, kriegsmarine, during, world, submarine, laid, down, june, 1942, howaldtswerke, yard, hamburg, launched, july, 1943, commissioned, september, 1943, under, command, oberleutnant, paul, weber, historynazi, germa. German submarine U 677 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 20 September 1943 under the command of Oberleutnant zur See Paul Weber HistoryNazi GermanyNameU 677Ordered5 June 1941BuilderHowaldtswerke HamburgYard number826Laid down13 June 1942Launched6 July 1943Commissioned20 September 1943FateSunk on 9 April 1945General characteristicsClass and typeType VIIC submarineDisplacement769 t 757 long tons surfaced 871 t 857 long tons submergedLength67 10 m 220 ft 2 in o a 50 50 m 165 ft 8 in pressure hull Beam6 20 m 20 ft 4 in o a 4 70 m 15 ft 5 in pressure hull Height9 60 m 31 ft 6 in Draught4 74 m 15 ft 7 in Installed power2 800 3 200 PS 2 100 2 400 kW 2 800 3 200 bhp diesels 750 PS 550 kW 740 shp electric Propulsion2 shafts 2 diesel engines 2 electric motorsSpeed17 7 knots 32 8 km h 20 4 mph surfaced 7 6 knots 14 1 km h 8 7 mph submergedRange8 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 submergedTest depth230 m 750 ft Crush depth 250 295 m 820 968 ft Complement4 officers 40 56 enlistedArmament5 torpedo tubes four bow one stern 14 53 3 cm 21 in torpedoes or 26 TMA mines 1 8 8 cm 3 46 in deck gun 220 rounds 1 3 7 cm 1 5 in Flak M42 AA gun 2 twin 2 cm 0 79 in C 30 anti aircraft gunsService recordPart of 5th U boat Flotilla 20 September 1943 31 May 1944 3rd U boat Flotilla 1 June 1 July 1944 23rd U boat Flotilla 1 July 1944 19 February 1945 31st U boat Flotilla 20 February 9 April 1945Identification codes M 52 352Commanders Oblt z S Paul Weber 20 September 1943 16 July 1944 Oblt z S Gerhard Ady 17 July 1944 9 April 1945Operations 1 patrol a 8 29 June 1944 b 1 2 July 1944 c 4 July 1944 d 4 6 July 1944Victories NoneAttached to 5th U boat Flotilla based at Kiel U 677 completed her training period on 31 May 1944 and was assigned to front line service Contents 1 Design 2 Service history 3 References 4 Bibliography 5 External linksDesign editGerman Type VIIC submarines were preceded by the shorter Type VIIB submarines U 677 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 677 was fitted with five 53 3 cm 21 in torpedo tubes four fitted at the bow and one at the stern fourteen torpedoes one 8 8 cm 3 46 in SK C 35 naval gun 220 rounds one 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 editDuring a British air raid on Hamburg on 5 April 1945 U 677 was damaged while in the Howaldtswerke yard In a second air raid four days later U 677 as well as another U boat U 982 sank in the U boat pen Fink II 2 References edit a b c d Groner 1991 pp 43 46 Busch amp Roll 1999 p 335 Bibliography editBusch Rainer Roll 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 Roll Hans Joachim 1999 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 a href Template Cite book html title Template Cite book cite book a work ignored help Groner Erich Jung Dieter Maass Martin 1991 U boats and Mine Warfare Vessels Vol 2 Translated by Thomas Keith Magowan Rachel London Conway Maritime Press ISBN 0 85177 593 4 a href Template Cite book html title Template Cite book cite book a work ignored help External links editHelgason Gudmundur The Type VIIC boat U 677 German U boats of WWII uboat net Retrieved 23 July 2015 Portals nbsp Military of Germany nbsp World War II Retrieved from https en wikipedia org w index php title German submarine U 677 amp oldid 1077259422, wikipedia, wiki, book, books, library,
