German submarine ''U-577'' was a

Type VIIC Type may refer to: Science and technology Computing * Typing, producing text via a keyboard, typewriter, etc. * Data type, collection of values used for computations. * File type * TYPE (DOS command), a command to display contents of a file. * Ty ...

U-boat U-boats are Submarine#Military, naval submarines operated by Germany, including during the World War I, First and Second World Wars. The term is an Anglicization#Loanwords, anglicized form of the German word , a shortening of (), though the G ...

built for

Nazi Germany Nazi Germany, officially known as the German Reich and later the Greater German Reich, was the German Reich, German state between 1933 and 1945, when Adolf Hitler and the Nazi Party controlled the country, transforming it into a Totalit ...

's ''

Kriegsmarine The (, ) was the navy of Nazi 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 It superseded the Imperial German Navy of the German Empire (1871–1918) and the inter-war (1919–1935) of the Weimar Republic.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 military branch, branche ...

'' for service during

World War II World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...

. She 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 ...

on 1 August 1940 by

Blohm & Voss Blohm+Voss (B+V), also written historically as Blohm & Voss, Blohm und Voß etc., is a German shipbuilding and engineering company. Founded in Hamburg in 1877 to specialise in steel-hulled ships, its most famous product was the World War II battle ...

Hamburg Hamburg (, ; ), officially the Free and Hanseatic City of Hamburg,. is the List of cities in Germany by population, second-largest city in Germany after Berlin and List of cities in the European Union by population within city limits, 7th-lar ...

as yard number 553, launched on 15 May 1941 and commissioned on 3 July 1941 under ''

Kapitänleutnant , short: KptLt/in lists: KL, ( or ''lieutenant captain'') is an officer grade of the captains' military hierarchy group () of the modern German . The rank is rated Ranks and insignia of NATO navies' officers, OF-2 in NATO, and equivalent to i ...

'' Herbert Schauenburg.

Design

German Type VIIC submarines German(s) may refer to: * Germany, the country of the Germans and German things **Germania (Roman era) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizenship in Germany, see also Ger ...

were preceded by the shorter Type VIIB submarines. ''U-577'' 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 ''superstructure'' and the ''pressure hull''. The external portion of a submarine’s hull—that part that does not resist sea pressure and is free-flooding—is known as the “superstructure” i ...

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 *Radio beam *Particle beam, a stream of charged or neutral particles **Charged particle beam, a spatially lo ...

of , a height of , and a draught of . The submarine was powered by two

Germaniawerft Friedrich Krupp Germaniawerft (often just called Germaniawerft, "Germania (personification), Germania shipyard") was a German shipbuilding company, located in the harbour at Kiel, and one of the largest and most important builders of U-boats for ...

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. It is a form of forced induction that is mechanically powered (usually by ...

diesel engine The diesel engine, named after the German engineer Rudolf Diesel, is an internal combustion engine in which Combustion, ignition of diesel fuel is caused by the elevated temperature of the air in the cylinder due to Mechanics, mechanical Compr ...

s producing a total of for use while surfaced, two

Brown, Boveri & Cie Brown, Boveri & Cie. (Brown, Boveri & Company; BBC) was a Swiss group of electrical engineering companies. It was founded in Baden bei Zürich, in 1891 by Charles Eugene Lancelot Brown and Walter Boveri who worked at the Maschinenfabrik Oer ...

GG UB 720/8 double-acting electric motors producing a total of for use while submerged. She had two shafts and two

propeller A propeller (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 a working flu ...

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-577'' 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, with an explosive warhead designed to detonate either on contact with or in proximity to the target. Historically, such ...

es, one SK C/35 naval gun, 220 rounds, and a C/30 anti-aircraft gun. The boat had a

complement Complement may refer to: The arts * Complement (music), an interval that, when added to another, spans an octave ** Aggregate complementation, the separation of pitch-class collections into complementary sets * Complementary color, in the visu ...

of between forty-four and sixty.

Service history

The boat's career began with training at

7th U-boat Flotilla The 7th U-boat Flotilla (German 7. Unterseebootsflottille), also referred to as the Wegener Flotilla, was a combat unit within the ''Kriegsmarine'', the naval warfare branch of Nazi Germany. It was the seventh operational flotilla focused on U-bo ...

on 3 July 1941, followed by active service on 1 October 1941 as part of the 1st Flotilla. On 1 January 1942, she transferred to operations in the

Mediterranean The Mediterranean Sea ( ) is a sea connected to the Atlantic Ocean, surrounded by the Mediterranean basin and almost completely enclosed by land: on the east by the Levant in West Asia, on the north by Anatolia in West Asia and Southern ...

with 29th Flotilla, and was sunk just two weeks later. In 3 patrols she sank no ships.

Wolfpacks

''U-577'' took part in three wolfpacks, namely: * Stosstrupp (30 October – 1 November 1941) * Raubritter (1 – 8 November 1941) * Störtebecker (17 – 22 November 1941)

Fate

''U-577'' was sunk on 15 January 1942 in the

NW of

Mersa Matruh Mersa Matruh (), also transliterated as Marsa Matruh ( Standard Arabic ''Marsā Maṭrūḥ'', ), is a port in Egypt and the capital of Matrouh Governorate. It is located west of Alexandria and east of Sallum on the main highway from the Nile ...

, in position , by depth charges from RN

Swordfish The swordfish (''Xiphias gladius''), also known as the broadbill in some countries, are large, highly migratory predatory fish characterized by a long, flat, pointed bill. They are the sole member of the Family (biology), family Xiphiidae. They ...

from 815 Squadron. All hands were lost.

References

Bibliography

* * * *

External links

* {{DEFAULTSORT:U0577 German Type VIIC submarines 1941 ships U-boats commissioned in 1941 Submarines lost with all hands U-boats sunk in 1942 U-boats sunk by depth charges U-boats sunk by British aircraft World War II shipwrecks in the Mediterranean Sea World War II submarines of Germany Ships built in Hamburg Maritime incidents in January 1942