Former Sjöormen class (Former 16 Dec 1968) 1,130 tonnes (surfaced) Purchased second hand from the Swedish Navy.
(Former 25 Jul 1969) Former Västergötland class (Former 27 Nov 1987) 1,400 tonnes (surfaced) Purchased second hand from the Swedish Navy.
(Former 20 Oct 1988) Type 218SG 2,000 tonnes (surfaced) Derived from La Fayette class France (DCNS design) Derived from MGB 62 Germany (Friedrich Lürssen Werft design) Former Fearless class Refurbished ships.
Derived from Landsort class Singapore ST Engineering (Marine) (production) "Combatant Craft Large" Operated by the Naval Diving Unit (NDU), used for underwater EOD, counter-terrorism, other special forces missions.
"Deep Search and Rescue 500" Type 218SG 2,000 tonnes (surfaced) "Multirole combat vessel" Singapore (Hull) Sweden (Systems) "mine countermeasures vessel" ST Engineering Marine, Saab Kockums Successor of the 6 Victory class missile corvettes.