German submarine ''U-490'' was a Type XIV supply and replenishment

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 ...

("''Milchkuh''") of

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 It superseded the Imperial German Navy of the German Empire (1871–1918) and the inter-war (1919–1935) of the Weimar Republic.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

. Her keel 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 21 February 1942, by Germaniawerft of

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 ...

as yard number 559. She was launched on 24 December 1942 and commissioned on 27 March 1943, with ''

Leutnant zur See ''Leutnant zur See'' (''Lt zS'' or ''LZS'') is the lowest officer rank in the German Navy. It is grouped as OF1 in Ranks and insignia of officers of NATO Navies, NATO, equivalent to an Ensign (rank), Ensign in the United States Navy, and an Acti ...

'' Wilhelm Gerlach in command. He remained in command throughout the boat's short career. The U-boat's service life commenced with the

4th U-boat Flotilla Fourth or the fourth may refer to: * the ordinal form of the number 4 * Fourth (album), ''Fourth'' (album), by Soft Machine, 1971 * Fourth (angle), an ancient astronomical subdivision * Fourth (music), a musical interval * The Fourth (1972 film) ...

from 27 March 1943 until 31 March 1944 for training. She then served, for operations, with the 12th flotilla.

Design

German Type XIV submarine The Type XIV U-boat was a modification of the Type IXD, designed to resupply other U-boats, being the only submarine tenders built which were not surface ships. It was nicknamed the "''Milchkuh/Milchkühe (pl.)''" (milk cows) or ''U-Tanker''. ...

s were shortened versions of the Type IXDs they were based on. ''U-490'' had a displacement of when at the surface and while submerged. The U-boat 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

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 ...

four-stroke, six-cylinder

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 ...

2 GU 345/38-8 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-490'' was not fitted with

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 or

deck gun A deck gun is a type of naval artillery mounted on the deck of a submarine. Most submarine deck guns were open, with or without a shield; however, a few larger submarines placed these guns in a turret. The main deck gun was a dual-purpose ...

s, but had two SK C/30 anti-aircraft guns with 2500 rounds as well as a C/30 guns with 3000 rounds. 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 fifty-three.

Operational career

''U-490''s only patrol began with her departure from Kiel on 4 May 1944. She headed for the Atlantic by way of the so-called Faeroes Gap between

Iceland Iceland ( is, Ísland; ) is a Nordic island country in the North Atlantic Ocean and in the Arctic Ocean. Iceland is the most sparsely populated country in Europe. Iceland's capital and largest city is Reykjavík, which (along with its s ...

and the

Faeroe Islands The Faroe Islands ( ), or simply the Faroes ( fo, Føroyar ; da, Færøerne ), are a North Atlantic island group and an autonomous territory of the Kingdom of Denmark. They are located north-northwest of Scotland, and about halfway betwee ...

, north of the

British Isles The British Isles are a group of islands in the North Atlantic Ocean off the north-western coast of continental Europe, consisting of the islands of Great Britain, Ireland, the Isle of Man, the Inner and Outer Hebrides, the Northern Isles, ...

. Although as a supply boat, she avoided combat, she was lost on her first patrol when on 12 June, she was attacked in mid-ocean by the escort carrier and the destroyers , and . There were 60 survivors (no casualties).

References

Bibliography

* * * *

External links

* {{DEFAULTSORT:U0489 German Type XIV submarines U-boats commissioned in 1943 U-boats scuttled in 1943 World War II submarines of Germany 1942 ships World War II shipwrecks in the Atlantic Ocean Ships built in Kiel Maritime incidents in June 1944