HMS Hajen submarine at the museum.
Photo Copyright (C) 2006, Naval Museum, Sweden

Class: Holland type
Launched: 1904, modified in 1916
At: Örlogsvarvet, (Navy Yard), Stockholm, Sweden
Commissioned: 1904
Decommissioned: 1922

Length: 23.3 meters
Beam: 3.6 meters
Draft: 1.4 meters
Hull: Single hull
Displacement: 111 tons
Armament: 1-45 cm torpedo tube. Room for 3 torpedoes
Machinery: (original) Avance kerosene – electric (later) Diesel - electric.
Speed: On surface 9.5 knots, under water 6.5 knots
Complement: 6 officers and 12 ratings

The National Maritime Museums of Sweden/The Naval Museum
Box 48
SE-371 21 Karlskrona
(46) 455 35 93 00
Fax: (46) 455 35 93 49
Latitude: 56.160951160380584, Longitude: 15.599767863750476
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The Hajen (Shark) was the first submarine of the Royal Swedish Navy. She is a small submarine of the Holland type, constructed by the Swedish navy engineer Carl Richson who had previously studied J.P Holland’s submarine designs in the U.S. In 1909 two additional submarines were launched and the Hajen is thereafter known as U-boat No. 1.

In 1916 Hajen was modified at Bergsunds Mekaniska Verkstad, Stockholm, Sweden. The Avance engine was replaced by a diesel motor. She was also fitted with a deck platform and fore ship. Hajen was decommissioned in 1922. She was then stripped of machinery and the complete inside fitting. Until 1932 she was moored and used for depot duties.

The Hajen is today exhibited on land by the Naval Museum in Karlskrona. She was included into the museums collections already in 1932. The submarine is today presented with the same exterior as it had after the modification in 1916.

HMS Hajen submarine underway.
Photo Copyright (C) 2006, Naval Museum, Sweden

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