Hajen-class submarine (1917)

HSwMS Valrossen in 1918
Class overview
NameHajen class
BuildersKockums, Malmö
Operators Swedish Navy
Succeeded byBävern class
In service1917–1943
Completed3
Scrapped3
General characteristics
Displacement
  • Surfaced: 422 tons
  • Submerged: 600 tons
Length54.00 m (177 ft 2 in)
Beam5.21 m (17 ft 1 in)
Draft3.51 m (11 ft 6 in)
Speed
  • Surfaced: 15.5 knots (28.7 km/h; 17.8 mph)
  • Submerged: 9 knots (17 km/h; 10 mph)
Complement30
Armament

The Hajen class, also known as the Hajen II class, was a trio of submarines operated by the Swedish Navy between 1917 and 1943. The design was based on the German Type UB-III U-boat and modified for Swedish service. The boats had an uneventful history throughout the interwar period were retired during World War II.