German submarine ''U-427'' was a Type VIIC

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 It superseded the Imperial German Navy of the German Empire (1871–1918) and the inter-war (1919–1935) of the Weimar Republic.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 ...

Design

German Type VIIC submarines German(s) may refer to: * Germany (of or related to) **Germania (historical use) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizens of Germany, see also German nationality law **Ger ...

were preceded by the shorter Type VIIB submarines. ''U-427'' 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 Siemens-Schuckert (or Siemens-Schuckertwerke) was a German electrical engineering company headquartered in Berlin, Erlangen and Nuremberg that was incorporated into the Siemens AG in 1966. Siemens Schuckert was founded in 1903 when Siemens & Ha ...

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-427'' 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 two twin C/30

anti-aircraft gun Anti-aircraft warfare, counter-air or air defence forces is the battlespace response to aerial warfare, defined by NATO as "all measures designed to nullify or reduce the effectiveness of hostile air action".AAP-6 It includes surface based, ...

s. The boat had a

complement A complement is something that completes something else. Complement may refer specifically to: The arts * Complement (music), an interval that, when added to another, spans an octave ** Aggregate complementation, the separation of pitch-class ...

of between forty-four and sixty.

Service history

Built by

Danziger Werft Danziger Werft ( en, The International Shipbuilding and Engineering Company Limited, pl, Stocznia Gdańska) was a shipbuilding company, in Danzig (now Gdańsk, Poland), in what was then the Free City of Danzig. It was founded in 1921 on the site ...

, Danzig, the U-boat 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 27 July 1942, launched on 6 February 1943 and commissioned on 2 June 1943 with a crew of 53 under their

Austrian Austrian may refer to: * Austrians, someone from Austria or of Austrian descent ** Someone who is considered an Austrian citizen, see Austrian nationality law * Austrian German dialect * Something associated with the country Austria, for example: ...

commander ''

Oberleutnant () is the highest lieutenant officer rank in the German-speaking armed forces of Germany (Bundeswehr), the Austrian Armed Forces, and the Swiss Armed Forces. Austria Germany In the German Army, it dates from the early 19th century. Trans ...

'' Carl-Gabriel

Graf (feminine: ) is a historical title of the German nobility, usually translated as "count". Considered to be intermediate among noble ranks, the title is often treated as equivalent to the British title of "earl" (whose female version is "coun ...

von Gudenus. It survived until the end of the war. Most

s achieved notoriety for the number of kills they achieved, or the total tonnage of the vessels they sank, but in the case of ''U-427'' fame was achieved in a different way.U-Boat Operations: U-427
, ubootwaffe.net From its first voyage, on 20 June 1944, until the end of the war, ''U-427'' never destroyed any of its targets. It fired

torpedoes 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 ...

at two vessels, and on 29 April 1945, missing both, but it was for its ability to survive under harrowing circumstances that ''U-427'' became known. In April 1945, leading up to, during, and after those two attacks, ''U-427'' survived 678

depth charge A depth charge is an anti-submarine warfare (ASW) weapon. It is intended to destroy a submarine by being dropped into the water nearby and detonating, subjecting the target to a powerful and destructive Shock factor, hydraulic shock. Most depth ...

attempts. On 2 May 1945, ''U-427'' returned to its base at

Kilbotn Kilbotn is a village in Harstad Municipality in Troms og Finnmark county, Norway. The village is located about south of the center of the town of Harstad, along the Vågsfjorden on the east side of Hinnøya island. The villages of Fauskevåg a ...

, Norway, where it remained for the few remaining days before Germany's surrender.Ship details: HMCS ''Iroquois''
, ubootwaffe.net ''U-427'' surrendered at

Narvik ( se, Áhkanjárga) is the third-largest municipality in Nordland county, Norway, by population. The administrative centre of the municipality is the town of Narvik. Some of the notable villages in the municipality include Ankenesstranda, Ball ...

, Norway, on 9 May 1945, and was transferred to

Loch Eriboll __NOTOC__ Loch Eriboll (Scottish Gaelic: "Loch Euraboil") is a long sea loch on the north coast of Scotland, which has been used for centuries as a deep water anchorage as it is safe from the often stormy seas of Cape Wrath and the Pentland Firt ...

, Scotland, on 19 May, and later to

Loch Ryan Loch Ryan ( gd, Loch Rìoghaine, ) is a Scottish sea loch that acts as an important natural harbour for shipping, providing calm waters for ferries operating between Scotland and Northern Ireland. The town of Stranraer is the largest settleme ...

as part of "

Operation Deadlight Operation Deadlight was the code name for the Royal Navy operation of November 1945 – February 1946 to scuttle German U-boats surrendered to the Allies after the defeat of Germany near the end of World War II. Operation Of the 156 U-boats ...

" when it was sunk on 21 December 1945 at .

References

Bibliography

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External links

* {{DEFAULTSORT:U0427 German Type VIIC submarines U-boats commissioned in 1943 World War II submarines of Germany U-boats sunk in 1945 1943 ships Operation Deadlight Ships built in Danzig Maritime incidents in December 1945