German submarine ''U-655'' was a

Type VIIC Type VII U-boats were the most common type of German World War II U-boat. 703 boats were built by the end of the war. The lone surviving example, , is on display at the Laboe Naval Memorial located in Laboe, Schleswig-Holstein, Germany. Conc ...

U-boat U-boats were naval submarines operated by Germany, particularly in the First and Second World Wars. Although at times they were efficient fleet weapons against enemy naval warships, they were most effectively used in an economic warfare role ...

Nazi Germany Nazi Germany (lit. "National Socialist State"), ' (lit. "Nazi State") for short; also ' (lit. "National Socialist Germany") (officially known as the German Reich from 1933 until 1943, and the Greater German Reich from 1943 to 1945) was ...

's ''

Kriegsmarine The (, ) was the navy of Germany from 1935 to 1945. It superseded the Imperial German Navy of the German Empire (1871–1918) and the inter-war (1919–1935) of the Weimar Republic. The was one of three official branches, along with the a ...

'' during

World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposin ...

. She was the first U-boat sunk in operation against the Arctic convoys.

Design

German Type VIIC submarines were preceded by the shorter Type VIIB submarines. ''U-655'' had a displacement of when at the surface and while submerged. She had a total length of , a

pressure hull A submarine hull has two major components, the ''light hull'' and the ''pressure hull''. The light hull (''casing'' in British usage) of a submarine is the outer non-watertight hull which provides a hydrodynamically efficient shape. The pressure ...

length of , a

beam Beam may refer to: Streams of particles or energy *Light beam, or beam of light, a directional projection of light energy **Laser beam *Particle beam, a stream of charged or neutral particles **Charged particle beam, a spatially localized grou ...

of , a height of , and a draught of . The submarine was powered by two Germaniawerft F46 four-stroke, six-cylinder

supercharged In an internal combustion engine, a supercharger compresses the intake gas, forcing more air into the engine in order to produce more power for a given displacement. The current categorisation is that a supercharger is a form of forced induct ...

diesel engine The diesel engine, named after Rudolf Diesel, is an internal combustion engine in which ignition of the fuel is caused by the elevated temperature of the air in the cylinder due to mechanical compression; thus, the diesel engine is a so-call ...

s producing a total of for use while surfaced, two Siemens-Schuckert GU 343/38–8 double-acting electric motors producing a total of for use while submerged. She had two shafts and two

propeller A propeller (colloquially often called a screw if on a ship or an airscrew if on an aircraft) is a device with a rotating hub and radiating blades that are set at a pitch to form a helical spiral which, when rotated, exerts linear thrust upon ...

s. The boat was capable of operating at depths of up to . The submarine had a maximum surface speed of and a maximum submerged speed of . When submerged, the boat could operate for at ; when surfaced, she could travel at . ''U-655'' was fitted with five

torpedo tube A torpedo tube is a cylindrical device for launching torpedoes. There are two main types of torpedo tube: underwater tubes fitted to submarines and some surface ships, and deck-mounted units (also referred to as torpedo launchers) installed aboa ...

s (four fitted at the bow and one at the stern), fourteen

torpedo A modern torpedo is an underwater ranged weapon launched above or below the water surface, self-propelled towards a target, and with an explosive warhead designed to detonate either on contact with or in proximity to the target. Historically, su ...

es, one SK C/35 naval gun, 220 rounds, and a C/30 anti-aircraft gun. The boat had a complement of between forty-four and sixty.

Service history

The submarine was

laid down Laying the keel or laying down is the formal recognition of the start of a ship's construction. It is often marked with a ceremony attended by dignitaries from the shipbuilding company and the ultimate owners of the ship. Keel laying is one o ...

on 10 August 1940 at the

Howaldtswerke Howaldtswerke-Deutsche Werft (often abbreviated HDW) is a German shipbuilding company, headquartered in Kiel. It is part of the ThyssenKrupp Marine Systems (TKMS) group, owned by ThyssenKrupp. The Howaldtswerke shipyard was founded in Kiel in 183 ...

yard at

Hamburg (male), (female) en, Hamburger(s), Hamburgian(s) , timezone1 = Central (CET) , utc_offset1 = +1 , timezone1_DST = Central (CEST) , utc_offset1_DST = +2 , postal ...

, launched on 5 June 1941. The submarine was commissioned on 11 August 1941 under the command of ''

Kapitänleutnant ''Kapitänleutnant'', short: KptLt/in lists: KL, ( en, captain lieutenant) is an officer grade of the captains' military hierarchy group () of the German Bundeswehr. The rank is rated OF-2 in NATO, and equivalent to Hauptmann in the Heer and ...

'' Adolf Dumrese (13 Nov 1909 - 24 Mar 1942). Attached to

6th U-boat Flotilla The 6th U-boat Flotilla (German ''6. Unterseebootsflottille''), also known as Hundius Flotilla, was a front-line unit of Nazi Germany's ''Kriegsmarine'' before and during World War II. Formed on 1 October 1938 in Kiel under the command of ''Kor ...

based at

Kiel Kiel () is the capital and most populous city in the northern Germany, German state of Schleswig-Holstein, with a population of 246,243 (2021). Kiel lies approximately north of Hamburg. Due to its geographic location in the southeast of the J ...

, ''U-655'' completed her training period on 1 March 1942 and was assigned to front-line service, The submarine left Kiel on 11 March reaching Helgoland on 12 March. From there the submarine departed on the 15 March on her first operational patrol to form part of the ''Ziethen'' wolfpack consisting of U-655 plus U-209, U-376 and U-378 operating northwest of Tromso in the Norwegian and Barent seas against the homebound

convoy QP 9 A convoy is a group of vehicles, typically motor vehicles or ships, traveling together for mutual support and protection. Often, a convoy is organized with armed defensive support and can help maintain cohesion within a unit. It may also be used ...

. On the evening of 24 March 1942, ''U-655'' was spotted on the surface about 8.25 pm by the leading gunner on the forward four-inch gun of the minesweeper beam on, about two to three cables (370 to 556 meters) away and about 10 degrees off the minesweeper's starboard bow, with no crew apparently manning the conning tower or deck. Upon being called by the officer of the watch the captain Lieutenant-Commander David Lampen immediately called for emergency full ahead and called 'Stand by to ram'. ''Sharpshooter'' had just begun to gather speed when she struck the submarine just behind the conning tower. The submarine turned rolled over due to the impact and bumped along the minesweeper's port side sinking as it disappeared astern and sank stern first south-east of Bear Island, in approximate position 73.00N, 21.00E. No trace of the submarine or her crew of 45 was found except for two lifebuoys and what may have been a canvas dinghy.

References

Bibliography

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External links

The Type VIIC boat U-655
{{DEFAULTSORT:U0655 German Type VIIC submarines 1941 ships Ships built in Hamburg U-boats commissioned in 1941 U-boats sunk in 1942 U-boats sunk by British warships U-boats sunk in collisions World War II shipwrecks in the Arctic Ocean World War II submarines of Germany Maritime incidents in March 1942