Main characteristics of the T 121 Spica

Building shipyard:	Götaverken AB
Date of launch:	1966-06-24
Discarded:	1989
Hull:	Steel
Superstructure:	Aluminium
Length overall:	42,5 m
Maximum width:	7,1 m
Draft:	2,6 m
Displacement:	210 ton
Machinery:	3 Bristol-Siddeley gas-turbine engines, each of 4,250 HP
Propellers:	3 KaMeWa propellers with hydraulically controllable pitch
Speed:	Maximum speed above 40 knots
Crew:	Wartime crew 30 men, officers and conscripts in proportion 50/50
Armament:	1 x 57 mm Bofors Dual Purpose Gun
	6 x 53 cm wire-guided torpedoes
	2 x 7,62 mm machine guns m/58 (from Fabrique Nationale d'Armes de Guerre and. Carl Gustafs Stads Gevärsfaktori)
	Flare rockets and chaff rockets
	Mines
	Depth charges
Radar:	Navigation radar PN 610, reconnaissance radar PS 57, and fire-control radar PE 57