SS-564 USS Trigger

Namesake. The Triggerfish are about 40 species of often brightly colored fish of the family Balistidae
Builder. General Dynamics Electric Boat, Groton, CT
Laid down. 24 Feb 1949
Launched. 14 Jun 1951
Commissioned. 31 Mar 1952
Decommissioned. 2 Jul 1973
Stricken. 2 Jul 1973
Fate. Transferred to Italy 10 Jul 1973
Class and type. Tang-class submarine Attack submarine
Displacement:
1,615 long tons (1,641 t) surfaced
1990 long tons (2,022 t) submerged
Length. 269 ft (82 m) originally; 287 ft (87 m) after rebuild
Beam. 27 ft (8.2 m)
Draft. 17 ft (5.2 m)
Speed. 18.3 knots (21.1 mph; 33.9 km/h) surfaced; 15.5 knots (17.8 mph; 28.7 km/h)
Complement. 88 officers and men
Armament:
8 × 21 inch (533 mm) torpedo tubes (6 forward, 2 aft)
40 × Mk 49/57 mines