German submarine U-1004 was a Type VIIC/41 U-boat built for Nazi Germany's Kriegsmarine for service during World War II. She was laid down on 15 January 1943 by Blohm & Voss, Hamburg as yard number 204, launched on 27 October 1943 and commissioned on 16 December 1943 under Oberleutnant zur See Hartmuth Schimmelpfennig.
Design Like all Type VIIC/41 U-boats, U-1004 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 , and a draught of . The submarine was powered by two Germaniawerft F46 supercharged six-cylinder four-stroke diesel engines producing a total of and two BBC GG UB 720/8 double-acting electric motors producing a total of for use while submerged. The boat was capable of operating at a depth of .
The submarine had a maximum surface speed of and a submerged speed of . When submerged, the boat could operate for at ; when surfaced, she could travel at . U-1004 was fitted with five torpedo tubes (four fitted at the bow and one at the stern), fourteen torpedoes or 26 TMA or TMB Naval mines, one SK C/35 naval gun, (220 rounds), one Flak M42 and two C/30 anti-aircraft guns. Its complement was between forty-four and sixty.
Service history The boat's service career began on 16 December 1943 with the 31st Training Flotilla, followed by active service with 7th Flotilla on 1 August 1944, then 11th Flotilla on 1 November 1944. U-1004 took part in no wolfpacks. U-1004 was sunk by naval gunfire on 1 December 1945 in the North Atlantic, in position , as part of Operation Deadlight.
Summary of raiding history DateShip NameNationalityTonnageMerchant ship tonnages are in gross register tons. Military vessels are listed by tons displacement.Fate22 February 1945Alexander Kennedy1,313Sunk22 February 1945980Sunk
See also Battle of the Atlantic
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