Delfinen class submarine

The Delfinen class of submarines was the last class of submarines of the Royal Danish Navy designed and built entirely by Danish architects. The first three boats of the class were financed by Denmark. The fourth was financed by the United States (where it was known as SS-554) under the Cost Share program.

General Characteristics

Designing and Building Yard: The Naval Dockyard, Copenhagen, project UB51
Displacement: 573 tons surfaced (Springeren 581 tons), 649 tons submerged
Length: 53.9 meters
Beam: 4.7 meters
Draught: 4.0 meters
Complement: seven officers, 26 men
Propulsion: two B&W 1200hp diesel engines, two BBC 2100hp electric motors, two propellers
Range: 4000 nautical miles at 8.5 knots
Armament: four 533mm torpedo tubes, eight torpedoes
Speed: 13.5 knots surfaced, 16.0 knots submerged

Ships

HDMS Delfinen (S326)
HDMS Spækhuggeren (S327)
HDMS Tumleren (S328)
HDMS Springeren (S329)

References

"Flådens skibe og fartøjer" 1945–1995, by Gunnar Olsen and Svenn Storgaard, Marinehistoriske skrifter, Copenhagen 1998 (ISBN 87–87720–13–2)
U-både gennem 75 år – Det danske ubådsvåben 1909–84, by Hans Chr. Bjerg, Hans Chr. Dahlerup Koch and P. B. Nielsen, Forlaget Forum, 1984