Tench-Class
Tench-Class Specifications Lead Boat: SS-417, U.S.S. Tench Length: 312′ Beam: 27′ Draft: 16′ 5″ (Surface trim) Displacement: 1,570 tons (surfaced); 2,414 tons (submerged) Speed: 20 knots (surfaced); 9 knots (submerged) Diving Depth: 400′ (test depth) Range: 11,000 miles Crew: 10 officers, 71 enlisted Deck Gun: 1 or 2-5″/25-calibre Anti-Aircraft Weapons: 2-40mm Light Weaponry: 2 to …