Dolfijn-class submarine

The Dutch submarine HNLMS Zeehond
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Class overview
NameDolfijn class
BuildersRotterdamsche Droogdok Maatschappij & Wilton-Fijenoord
Operators Royal Netherlands Navy
Preceded byO 21 class
Succeeded byWalrus class
SubclassesPotvis class
Built1954–1966
In service1960–1992
Completed4
Retired4
Preserved1
General characteristics
TypeSubmarine
Displacement
  • 1,530 tons (surfaced)
  • 1,826 tons (submerged)
Length79.5 m (261 ft)
Beam7.8 m (26 ft)
Draught5.0 m (16.4 ft)
Propulsion2 shafts, diesel electric. 2 MAN type diesels (2800 hp) and two electric motors 4000 hp
Speed
  • 14.5 kn (26.9 km/h; 16.7 mph) (surfaced)
  • 17 kn (31 km/h; 20 mph) (submerged)
Complement67
Sensors and
processing systems
Radar type 1001, Sonar: passive and active
Armament8 x 533 mm (21 inch torpedo tubes) 4 bow, 4 stern, 16–22 torpedoes, fitted for minelaying via torpedo tubes

The Dolfijn-class submarines of the Royal Netherlands Navy are a class of four submarines; Dolfijn, Zeehond, Potvis and Tonijn. They were built in the late 1950s and the early 1960s. They were the first indigenous submarines built in the Netherlands and for the Royal Netherlands Navy after World War II. In the Netherlands they are also known as "three cylinder" submarines.[1]

  1. ^ Gerretse and Wijn, p. 9