German submarine U-752
Introduction '''German submarine ''U-752''''' was a Type VIIC U-boat built for Nazi Germany's ''Kriegsmarine'' for service during World War II.
Design German Type VIIC submarines were preceded by the shorter Type VIIB submarines. ''U-752'' 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-752'' 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 She served with 3rd U-boat Flotilla from 24 May 1941 until 23 May 1943 under the command of ''Korvettenkapitän'' Karl-Ernst Schroeter. ''U-752'' completed nine wartime patrols and sank nine ships and damaged one.===Fate===Thirty-two days into her ninth patrol, on 23 May 1943, ''U-752'' was attacked by Fairey Swordfish aircraft attached to the British escort carrier  in the mid-Atlantic. A Rocket Spear, a new weapon with a solid cast iron head, entered and left the pressure hull leaving large holes, thus preventing the U-boat from diving. At the arrival of enemy surface craft, the surviving crew of 17 scuttled the boat and abandoned ship. This was the first success of the Rocket Spear. ''U-752'' sank with 30 men. Heinz Krey was one of them.===Wolfpacks===''U-752'' took part in ten wolfpacks, namely:* Westwall (2 – 12 March 1942) * Hai (3 – 21 July 1942) * Schlagetot (9 – 21 November 1942) * Habicht (10 – 19 January 1943) * Haudegen (19 January – 9 February 1943) * Amsel 3 (4 – 6 May 1943) * Rhein (7 – 10 May 1943) * Elbe 1 (10 – 14 May 1943) * Oder (17 – 19 May 1943) * Mosel (19 – 23 May 1943)
Summary of raiding history DateShip NameNationalityTonnage(GRT)Fate25 August 1941''T-898 (No 44)''553Sunk27 August 1941''RT-8 Seld´''608Sunk15 November 1941''T-889 (No 34)''581Sunk21 April 1942''West Imboden''5,751Sunk23 April 1942''Reinholt''4,799Damaged1 May 1942''Bidevind''4,956Sunk23 July 1942''Garmula''5,254Sunk27 July 1942''Leikanger''4,003Sunk9 August 1942''Menanau''6,047Sunk13 August 1942''Cripple Creek''6,347Sunk
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