Type IXA submarine

U-37 docked at Wilhelmshaven on 18 April 1940
Class overview
Operators	Kriegsmarine
Preceded by	Type VII submarine
Succeeded by	Type IXB submarine
Built	1937–1939
In service	1937–1945
In commission	1938–1945
Planned	8
Completed	8
Lost	6
Scrapped	2
General characteristics
Displacement	1,032 t (1,016 long tons) surfaced 1,153 t (1,135 long tons) submerged
Length	76.50 m (251 ft) (o/a) 58.75 m (192 ft 9 in) (pressure hull)
Beam	6.51 m (21 ft 4 in) (o/a) 4.40 m (14 ft 5 in) (pressure hull)
Height	9.40 m (30 ft 10 in)
Draft	4.70 m (15 ft 5 in)
Speed	18.2 knots (33.7 km/h; 20.9 mph) surfaced 7.7 knots (14.3 km/h; 8.9 mph) submerged
Range	10,500 nmi (19,400 km; 12,100 mi) at 10 knots (19 km/h; 12 mph) surfaced 65–78 nmi (120–144 km; 75–90 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Armament	6 × torpedo tubes (4 bow, 2 stern) 22 × 53.3 cm (21 in) torpedoes 1 × 10.5 cm SK C/32 naval gun (180 rounds) various AA guns

The German Type IXA submarine was a sub-class of the German Type IX submarine built for Nazi Germany's Kriegsmarine between 1937 and 1938. These U-boats were designed between 1935 and 1936 and were intended to be fairly large ocean-going submarines. The inspiration for the Type IXA submarine came from the German Type IA submarine, which had a similar diving depth and identical submerged horsepower.

Two of the eight Type IXA submarines (U-37 and U-38) would become the 6th and 10th most successful U-boats that saw service in World War II, sinking 53 and 35 ships respectively. All of the Type IXA submarines were sunk fairly early in the war except for U-37 and U-38, which were scuttled in May 1945 to prevent them from falling into the hands of the Allies.