Engineering:Hajen-class submarine

HMSwS Hajen.
Class overview
Builders:	Kockums
Operators:	Swedish Navy
Preceded by:	Neptun-class
Succeeded by:	Draken-class
Built:	1953-1960
In commission:	1957-1980
Planned:	6
Completed:	6
Active:	0
Retired:	6
General characteristics
Type:	Submarine
Displacement:	720 tonnes (Surfaced) 900 tonnes submerged
Length:	65.8 m (216 ft)
Beam:	5.1 m (17 ft)
Draught:	5.0 m (16.4 ft)
Propulsion:	2 shaft diesel-electric 2 Pielstick Diesels 1660 hp 2 ASEA electric motors
Speed:	16 knots (30 km/h; 18 mph) surfaced 20 knots (37 km/h; 23 mph) submerged
Complement:	44
Armament:	4 × 533mm Torpedo Tubes (bow, 8 torpedoes)

The Hajen class (Shark class) was a submarine class built by Kockums and used by the Swedish Navy. The design was influenced by the German Type XXI submarine class. A total of 6 submarines were built in 1954-1958 and were kept in service until 1980.

The first Hajen class submarine to be built was HSwMS Hajen in 1954, followed by HSwMS Sälen (1955), HSwMS Valen (1955), HSwMS Illern (1957), HSwMS Bävern (1958), and HSwMS Uttern (1958).

References

• Conway's All the World's Fighting Ships 1947-1995