German submarine U-757
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: