German submarine U-2506

German submarine U-2506 was a Type XXI U-boat (one of the "Elektroboote") of Nazi Germany's Kriegsmarine, built for service in World War II. The submarine was laid down on 29 May 1944 at the Blohm & Voss yard at Hamburg, launched on 5 August 1944, and commissioned on 31 August 1944 under the command of Kapitänleutnant Horst von Schroeter, who commanded her until 9 May 1945. U-2506 conducted no patrols, and surrendered on 9 May 1945 in Bergen, Norway. She was then transferred to Lerwick on 18 June 1945, then Lisahally on 21 June 1945. She was sunk on 5 January 1946 at 55.61667°N, -7.5°W.

Design
Like all Type XXI U-boats, U-2506 had a displacement of 1621 t when at the surface and 1819 t while submerged. She had a total length of 76.70 m (o/a), a beam of 8 m, and a draught of 6.32 m. The submarine was powered by two MAN SE supercharged six-cylinder M6V40/46KBB diesel engines each providing 4000 PS, two Siemens-Schuckert GU365/30 double-acting electric motors each providing 5000 PS, and two Siemens-Schuckert silent running GV232/28 electric motors each providing 226 PS.

The submarine had a maximum surface speed of 15.6 kn and a submerged speed of 17.2 kn. When running on silent motors the boat could operate at a speed of 6.1 kn. When submerged, the boat could operate at 5 kn for 340 nmi; when surfaced, she could travel 15500 nmi at 10 kn. U-2506 was fitted with six 53.3 cm torpedo tubes in the bow and four 2 cm C/30 anti-aircraft guns. She could carry twenty-three torpedoes or seventeen torpedoes and twelve mines. The complement was five officers and fifty-two men.