Like all
Type XXIU-boats, U-3514 had a displacement of 1,621 tonnes (1,595 long tons) when at the surface and 1,819 tonnes (1,790 long tons) while submerged. She had a total length of 76.70 m (251 ft 8 in) (
o/a), a beam of 8 m (26 ft 3 in), and a draught of 6.32 m (20 ft 9 in).[4] The submarine was powered by two
MAN SE supercharged six-cylinder M6V40/46KBB diesel engines each providing 4,000
metric horsepower (2,900
kilowatts; 3,900
shaft horsepower), two
Siemens-Schuckert GU365/30
double-acting electric motors each providing 5,000 PS (3,700 kW; 4,900 shp), and two Siemens-Schuckert
silent running GV232/28 electric motors each providing 226 PS (166 kW; 223 shp).[4]
The submarine had a maximum surface speed of 15.6 knots (28.9 km/h; 18.0 mph) and a submerged speed of 17.2 knots (31.9 km/h; 19.8 mph). When running on silent motors the boat could operate at a speed of 6.1 knots (11.3 km/h; 7.0 mph). When submerged, the boat could operate at 5 knots (9.3 km/h; 5.8 mph) for 340 nautical miles (630 km; 390 mi); when surfaced, she could travel 15,500 nautical miles (28,700 km; 17,800 mi) at 10 knots (19 km/h; 12 mph).[4]U-3514 was fitted with six 53.3 cm (21.0 in)
torpedo tubes in the bow and four
2 cm (0.79 in) C/30anti-aircraft guns. She could carry twenty-three
torpedoes or seventeen torpedoes and twelve
mines. The
complement was five officers and fifty-two men.[4]
Service history
On 9 May 1945, U-3514 surrendered at
Bergen, Norway. She was transferred to
Lisahally, Northern Ireland on 6 June 1945, arriving on 8 June 1945.[3]
U-3514 was held at Lisahally until January 1946, when she was taken to
Moville. She was being held up in reserve just in case one of the Type XXI that had been transferred to the
Soviets after the war did not arrive intact. Then on 7 February 1946, she was ordered to be part of
Operation Deadlight. Two days later, on 9 February, she left Moville to be towed to her
scuttling area, arriving on the morning of 12 February.
HMS Loch Arkaig began the scuttling process at 09:36 using her
QF 4 in (100 mm) Mark V gun,
"Squid" depth charges, and "Shark" shells,[5] fired from the four-inch gun. U-3514 sank at 10:04, becoming the last U-boat sunk during Operation Deadlight.[3]
Busch, Rainer; Röll, Hans-Joachim (1999). German U-boat commanders of World War II : a biographical dictionary. Translated by Brooks, Geoffrey. London, Annapolis, Md: Greenhill Books, Naval Institute Press.
ISBN1-55750-186-6.