U-2511

Survived

Type	Submarine
Class	Type XXI
War	Second World War
Main guns	4 × .79″ guns

The first Type XXI "Elektroboot", built to stay submerged at high speed, to sail on a war patrol, in the last days of the war. Surrendered in Norway and sunk by the Royal Navy in Operation Deadlight.

Three Elektroboat Type XXI U-Boat in Norway, Bergen, 1945. In the center is U-2511, one of the only Type XXI to conduct a war patrol. Photo: unknown british seaman, Public domain · Wikimedia Commons

Armament and specifications

Armament

6 × bow torpedo tubes
23 × 53.3 cm (21 in) torpedoes
or 17 × torpedoes and 12 × mines
4 × 2 cm (0.79 in) C/30 AA guns

Builder	Blohm & Voss, Hamburg
Laid down	7 July 1944
Launched	2 September 1944
Commissioned	29 September 1944
Displacement	1,621 t (1,595 long tons) surfaced 2,100 t (2,067 long tons) submerged
Length	76.70 m (251 ft 8 in) (o/a)
Speed	Surfaced: 15.6 knots (28.9 km/h; 18.0 mph) (diesel) 17.9 knots (33.2 km/h; 20.6 mph) (electric) Submerged: 17.2 knots (31.9 km/h; 19.8 mph) (electric) 6.1 knots (11.3 km/h; 7.0 mph) (silent running motors)
Complement	5 officers, 52 enlisted

As built, from the ship's Wikipedia article. Figures there may cover later refits too.

Career

She isn't listed in any of the fleet actions covered here.

Launched

2 September 1944

Fate

Survived

Surrendered on 9 May 1945 at Bergen

Sunk in Operation Deadlight on 7 January 1946 at 7:40 pm