Type X submarine

U-234 surrenders to USS Sutton, 1945
Class overview
Builders	Germaniawerft, Kiel
Operators	Kriegsmarine  Imperial Japanese Navy
Preceded by	Type IX submarine
Succeeded by	Type XIV submarine (tanker submarine) Type XVII submarine (coastal submarine)
Built	1939 -1944
In commission	1941 -1945
Completed	8
Lost	6
General characteristics [1]
Class and type	Submarine minelayer
Displacement	1,763 tonnes (1,735 long tons) surfaced 2,177 tonnes (2,143 long tons) submerged
Length	89.80 m (294 ft 7 in) o/a 70.90 m (232 ft 7 in) pressure hull
Beam	9.20 m (30 ft 2 in) o/a 4.75 m (15 ft 7 in) pressure hull
Height	10.20 m (33 ft 6 in)
Draught	4.71 m (15 ft 5 in)
Propulsion	2 × supercharged GW F 46 a 9 pu 9-cylinder, four-stroke diesel engines, 4,800 PS (4,700 bhp; 3,500 kW) 2 × AEG GU 720/8-287 electric motors, 1,100 PS (1,100 shp; 810 kW)
Speed	16.4–17 knots (30.4–31.5 km/h; 18.9–19.6 mph) surfaced 7 knots (13 km/h; 8.1 mph) submerged
Range	18,450 nautical miles (34,170 km; 21,230 mi) at 10 knots (19 km/h; 12 mph) surfaced 93 nmi (172 km; 107 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth	Calculated crush depth: 220 m (720 ft)
Complement	5 officers, 47 enlisted
Armament	2 × 53.3 cm (21 in) stern torpedo tubes 15 × torpedoes 66 × SMA mines 1 × 10.5 cm (4.1 in) deck gun[2] (200 rounds)

Type X (XB) U-boats were a special type of German submarine (U-boat). Although intended as long-range mine-layers, they were later used as long-range merchant submarines, a task they shared with the Type IXD and Italian Romolo-class submarines.