Submarines
Attack submarines (Diesel-Electric)
Gotland class LOA 198′ TDISP 1,600 tons (3 active, service since 1996) AND the very similar Södermanland class LOA 199′ TDISP 1,500 tons submerged (2 active, service since 1989) Formerly part of the 4 boat Västergötland class. 2003-2004 refitted, lengthened and updated with Air Independent Propulsion (AIP) . 2 remaining boats were also upgraded and sold to Singapore as the Archer Class. At this time we are unable to distinguish between these very similar submarines. 
Näcken class LOA 144′ lengthened to 162′ TDISP 1,150 tons submerged (3 retired, service 1980-ca. 2005, 1 preserved) HSwMS Neptun was the test boat for the Air Independent Propulsion system fitted to the rest of the submarine fleet, and was lengthened in 1998.
Draken Class LOA 227′ TDISP 950 tons submerged. (6 retired, 1 preserved, service)
HSwMS Nordkaparen (1962-1988) preserved at Maritiman Gothenburg
HSwMS U-3 (1942-1964) LOA 163′ TDISP 400 tons submerged. Preserved at Technology and Maritime Museum, Malmo.
HSwMS Hajen U-1 (1904-1922) LOA 77′ TDISP 127 tons submerged. Preserved at Marinmuseum, Karlskrona. On exterior display until 2008 when the submarine hall was built.
