German submarine U-757
Introduction '''German submarine ''U-757''''' was a Type VIIC U-boat built for Nazi Germany's ''Kriegsmarine'' for service during World War II. Laid down as yard number 140 at the Kriegsmarinewerft (KMW) in Wilhelmshaven, ''U-757'' served with 6th U-boat Flotilla from 28 February 1942 until 8 January 1944 under the command of ''Korvettenkapitän'' Friedrich Deetz.
Design German Type VIIC submarines were preceded by the shorter Type VIIB submarines. ''U-757'' had a displacement of  when at the surface and  while submerged. She had a total length of , a pressure hull length of , a beam of , a height of , and a draught of . The submarine was powered by two Germaniawerft F46 four-stroke, six-cylinder supercharged diesel engines producing a total of  for use while surfaced, two Garbe, Lahmeyer & Co. RP 137/c 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-757'' was fitted with five  torpedo tubes (four fitted at the bow and one at the stern), fourteen torpedoes, one  SK C/35 naval gun, 220 rounds, and a  C/30 anti-aircraft gun. The boat had a complement of between forty-four and sixty.
Service history ''U-757''s first victims were the British transport vessel HMS ''LCT-2398'' - destroying 291 tons of shipping - in the convoy HX 228, and the American merchant vessel ''William C. Gorgas''- destroying a further 7,197 GRT of shipping. Both incidents occurred on 11 March 1943, fourteen days into her twenty-five-day-long third patrol. Of the seventy-three crewmen on board the ''Gorgas'', twenty-two perished.On her fourth patrol, ''U-757'' sank the Norwegian ''Fernhill'' on 7 August 1943, thirty-one days into her sixty-day patrol, 4,116 GRT of shipping lost in the sea. Of the ship's forty-four crewmen, forty survived the attack, being rescued by the American tanker ''Idaho'' two days later.===Fate===On 8 January 1944 in the North Atlantic, south-west of Ireland, ''U-757'' was hit by depth charges from the British frigate  and the Canadian corvette . ''U-757'' went down with all 49 seamen, at position .===Wolfpacks===''U-757'' took part in five wolfpacks, namely:* Panther (6 – 10 October 1942)* Neuland (4 – 12 March 1943)* Without name (11 – 29 July 1943)* Rügen 5 (6 – 7 January 1944)* Rügen (7 – 8 January 1944)
Summary of raiding history DateShip NameNationalityTonnageFate11 March 1943''William C. Gorgas''7,197Sunk11 March 1943HMS ''LCT-2398''291Sunk7 August 1943''Fernhill''4,116Sunk
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