Porpoise-Class

Porpoise Class Specifications Lead Boat: SS-172, U.S.S. Porpoise Length: 301′ Beam: 24′ 11″ Draft: 13′ 10″ (Surface trim) Displacement: 1,300 tons (surfaced); 1,900 tons (submerged) Speed: 20 knots (surfaced); 9 knots (submerged) Diving Depth: 250′ (test depth) Range: 22,000 miles Crew: 5 officers, 49 enlisted Deck Gun: 1-3″/50-calibre Anti-Aircraft Weapons: Light Weaponry: 50 & 30 … Read more