German submarine ''U-174'' was a Type IXC

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 ro ...

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's '' Kriegsmarine'' during

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. She was

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at the

DeSchiMAG Deutsche Schiff- und Maschinenbau Aktiengesellschaft (abbreviated Deschimag) was a cooperation of eight German shipyards in the period 1926 to 1945. The leading company was the shipyard AG Weser in Bremen. History The Deschimag was founded in 1 ...

AG Weser Aktien-Gesellschaft „Weser" (abbreviated A.G. „Weser”) was one of the major German shipbuilding companies, located at the Weser River in Bremen. Founded in 1872 it was finally closed in 1983. All together, A.G. „Weser" built about 1,400 ...

yard in Bremen as yard number 1014 on 2 January 1941, launched on 21 August and commissioned on 26 November with ''

Fregattenkapitän Fregattenkapitän, short: FKpt / in lists: FK, () is the middle field officer rank () in the German Navy. Address In line with ZDv 10/8, the official manner of formally addressing military personnel holding the rank of ''Fregattenkapitän'' ...

'' Ulrich Thilo in command. ''U-174'' began her service career with training as part of the

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

. She was reassigned to the 10th flotilla for operations on 1 August 1942. She was sunk by an American Lockheed Ventura on 27 April 1943.

Design

German Type IXC submarines were slightly larger than the original Type IXBs. ''U-174'' 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

MAN A man is an adult male human. Prior to adulthood, a male human is referred to as a boy (a male child or adolescent). Like most other male mammals, a man's genome usually inherits an X chromosome from the mother and a Y chromo ...

M 9 V 40/46 supercharged four-stroke, nine-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-ca ...

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 & H ...

2 GU 345/34 double-acting electric motors producing a total of for use while submerged. She had two shafts and two propellers. 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-174'' was fitted with six

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 two at the stern), 22

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, s ...

es, one SK C/32 naval gun, 180 rounds, and a SK C/30 as well as a C/30 anti-aircraft gun. The boat had a

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of forty-eight.

Service history

First patrol

The boat departed

Kiel Kiel () is the capital and most populous city in the northern 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 Jutland ...

on 30 July 1942, moved through the

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and negotiated the 'gap' between

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and the

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. She encountered, in mid-Atlantic Ocean, the corvette . The Norwegian ship attacked; at one point, she was so close that a depth charge projected towards the U-boat, fell on the far side of the German vessel. The submarine escaped; nevertheless, the damage inflicted was sufficient to cause ''U-174'' to leave a tell-tale trail of oil, thus obliging Thilo to abort the patrol. She entered

Lorient Lorient (; ) is a town ('' commune'') and seaport in the Morbihan department of Brittany in western France. History Prehistory and classical antiquity Beginning around 3000 BC, settlements in the area of Lorient are attested by the presen ...

, on the French Atlantic coast, on 6 September.

Second patrol

For her second sortie, she sailed to the waters off Brazil. There she sank four ships between 31 October and 2 November 1942. She sank a fifth vessel on 15 December but was twice unsuccessfully attacked by American

Catalina Catalina may refer to: Arts and media * ''The Catalina'', a 2012 American reality television show * ''Catalina'' (novel), a 1948 novel by W. Somerset Maugham * Catalina (''My Name Is Earl''), character from the NBC sitcom ''My Name Is Earl'' ...

aircraft on the same day. She returned to Lorient on 9 January 1943.

Third patrol and loss

''U-174'' had departed her French base on 18 March 1943, bound for the eastern seaboard of North America. On 27 April, she was attacked and sunk by an American Lockheed Ventura aircraft of VB-125 southwest of Newfoundland. Fifty-three men died; there were no survivors.

Wolfpacks

''U-174'' took part in one wolfpack, namely: * Lohs (11 – 26 August 1942)

Summary of raiding history

In popular culture

The ''U-174'' is said to have been the submarine on which Xavier March served during

in Robert Harris's 1992

alternative history Alternate history (also alternative history, althist, AH) is a genre of speculative fiction of stories in which one or more historical events occur and are resolved differently than in real life. As conjecture based upon historical fact, alte ...

novel ''

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.''

References

Bibliography

* * * *

External links

* * {{DEFAULTSORT:U0174 German Type IX submarines U-boats commissioned in 1941 U-boats sunk in 1943 World War II submarines of Germany 1941 ships World War II shipwrecks in the Atlantic Ocean Ships built in Bremen (state) U-boats sunk by US aircraft Ships lost with all hands Maritime incidents in April 1943