German submarine ''U-506'' 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 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 It superseded the Imperial German Navy of the German Empire (1871–1918) and the inter-war (1919–1935) of the Weimar Republic.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 ...

. 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 11 July 1940 at the

Deutsche Werft Deutsche Werft (English: German Shipyard) was a shipbuilding company in Finkenwerder Rüschpark, Hamburg, Germany. It was founded in 1918 by Albert Ballin and with Gutehoffnungshütte (GHH), ''Allgemeine Elektricitäts-Gesellschaft'' ( AEG) and ' ...

yard in

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

as yard number 296, launched on 20 June 1941 and commissioned on 15 September 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 ...

Erich Würdemann Erich Würdemann (15 January 1914, in Hamburg – 14 July 1943, west of Vigo in the Bay of Biscay) was a German submarine commander in World War II and recipient of the Knight's Cross of the Iron Cross of Nazi Germany. Career In April 1933, Würd ...

. After completing her training 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) ...

'' based at

Stettin Szczecin (, , german: Stettin ; sv, Stettin ; Latin language, Latin: ''Sedinum'' or ''Stetinum'') is the capital city, capital and largest city of the West Pomeranian Voivodeship in northwestern Poland. Located near the Baltic Sea and the Po ...

, ''U-506'' was transferred to the '' 10th U-boat Flotilla'' for front-line service on 1 February 1942. She sank 14 ships, three were classified as 'damaged' another vessel was declared a 'total loss'. The submarine's missions, particularly the sinking of the merchant ship Heredia and later involvement in the so-called ''

Laconia Incident The ''Laconia'' incident was a series of events surrounding the sinking of a British passenger ship in the Atlantic Ocean on 12 September 1942, during World War II, and a subsequent aerial attack on German and Italian submarines involved i ...

'' is chronicled in the 2016 book So Close to Home. She was sunk in the Atlantic on 12 July 1943 by

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 ...

s dropped by a US

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Design

German Type IXC submarines were slightly larger than the original Type IXBs. ''U-506'' 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 chromos ...

M 9 V 40/46

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, 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-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 345/34 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-506'' 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, su ...

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

''U-506'' first departed Hamburg on 2 March 1942 and sailed to

Heligoland Heligoland (; german: Helgoland, ; Heligolandic Frisian: , , Mooring Frisian: , da, Helgoland) is a small archipelago in the North Sea. A part of the German state of Schleswig-Holstein since 1890, the islands were historically possessions ...

, leaving there on 9 March for her first patrol, which took her around 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, ...

Lorient Lorient (; ) is a town (''Communes of France, commune'') and Port, seaport in the Morbihan Departments of France, department of Brittany (administrative region), Brittany in western France. History Prehistory and classical antiquity Beginn ...

in occupied France via the gap between the

Shetland Shetland, also called the Shetland Islands and formerly Zetland, is a subarctic archipelago in Scotland lying between Orkney, the Faroe Islands and Norway. It is the northernmost region of the United Kingdom. The islands lie about to the no ...

and

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 ...

, by 25 March.

Second patrol

The U-boat sailed from Lorient on 6 April 1942, crossed the

Atlantic The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the " Old World" of Africa, Europe an ...

, and entered the

Gulf of Mexico The Gulf of Mexico ( es, Golfo de México) is an oceanic basin, ocean basin and a marginal sea of the Atlantic Ocean, largely surrounded by the North American continent. It is bounded on the northeast, north and northwest by the Gulf Coast of ...

to operate off the

Mississippi River Delta The Mississippi River Delta is the confluence of the Mississippi River with the Gulf of Mexico in Louisiana, southeastern United States. The river delta is a area of land that stretches from Vermilion Bay on the west, to the Chandeleur Isla ...

against the crucial oil trade. En route she sank a

Nicaragua Nicaragua (; ), officially the Republic of Nicaragua (), is the largest country in Central America, bordered by Honduras to the north, the Caribbean to the east, Costa Rica to the south, and the Pacific Ocean to the west. Managua is the cou ...

n merchant ship off the southern tip of

Florida Florida is a state located in the Southeastern region of the United States. Florida is bordered to the west by the Gulf of Mexico, to the northwest by Alabama, to the north by Georgia, to the east by the Bahamas and Atlantic Ocean, and to ...

. Between 10 and 20 May she sank three

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oil tankers An oil tanker, also known as a petroleum tanker, is a ship designed for the bulk transport of oil or its products. There are two basic types of oil tankers: crude tankers and product tankers. Crude tankers move large quantities of unrefined crud ...

and a

banana boat Banana Boat is a Polish a cappella sextet, authoring and performing original songs representing the genre of neo-shanties. Being one of the pioneers of the new genre, the group retains its simultaneous focus on contemporary interpretations of ...

, and damaged four other oil tankers, one so badly it was declared a total loss. On the return journey she sank two British merchant ships off the

Bahamas The Bahamas (), officially the Commonwealth of The Bahamas, is an island country within the Lucayan Archipelago of the West Indies in the Atlantic Ocean, North Atlantic. It takes up 97% of the Lucayan Archipelago's land area and is home to ...

, eventually returning to Lorient on 15 June.

Third patrol

''U-506'' sailed from Lorient once again on 28 July 1942 and headed south to the coast of West Africa, operating against ships sailing from

Freetown Freetown is the capital and largest city of Sierra Leone. It is a major port city on the Atlantic Ocean and is located in the Western Area of the country. Freetown is Sierra Leone's major urban, economic, financial, cultural, educational and p ...

Sierra Leone Sierra Leone,)]. officially the Republic of Sierra Leone, is a country on the southwest coast of West Africa. It is bordered by Liberia to the southeast and Guinea surrounds the northern half of the nation. Covering a total area of , Sierra ...

. There she sank five more merchant ships, four British, one Swedish. On the return journey the U-boat took part in the rescue operations after the Laconia incident, sinking of the RMS ''Laconia'', before returning to Lorient on 7 November after 103 days at sea.

Fourth patrol

The U-boat sailed from Lorient on 14 December 1942 and again headed south, this time to the coast of

South Africa South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa. It is bounded to the south by of coastline that stretch along the South Atlantic and Indian Oceans; to the north by the neighbouring countri ...

, where she sank two merchant ships, one British, the other Norwegian, before returning to base on 8 May. She was away even longer than on her third patrol-146 days.

Fifth patrol

''U-506''s final voyage began on 6 July 1943. On 12 July the U-boat was attacked by a

USAAF The United States Army Air Forces (USAAF or AAF) was the major land-based aerial warfare service component of the United States Army and ''de facto'' aerial warfare service branch of the United States during and immediately after World War II ...

B-24 Liberator bomber of the 1st Anti-Submarine Squadron in the North Atlantic west of

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, Spain, in position . The U-boat was located by the aircraft's SC137 10 cm

radar Radar is a detection system that uses radio waves to determine the distance (''ranging''), angle, and radial velocity of objects relative to the site. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, w ...

, which the Germans could not detect, and was attacked with seven

s. The U-boat broke in two, and about 15 men were seen in the water by the pilot, who dropped a liferaft and a smoke flare. Only six men were rescued by a British destroyer three days later.

Summary of raiding history

References

Bibliography

* * * * *

External links

* * {{DEFAULTSORT:U0506 German Type IX submarines World War II submarines of Germany World War II shipwrecks in the Atlantic Ocean U-boats sunk in 1943 U-boats sunk by depth charges U-boats sunk by US aircraft Maritime incidents in July 1943 1941 ships U-boats commissioned in 1941 Ships built in Hamburg Caribbean Sea operations of World War II Wars involving the Bahamas