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 calibre machine guns
Torpedoes: 4-21″ torpedo tubes (bow), 2-21″ torpedo tubes (stern), 16 torpedoes
Engines: 4-1,300 hp main diesels, 3-100 kw auxiliaries
Motors: 4-521 hp
| Hull Number | Name | Commission Date | Fate | Class |
|---|---|---|---|---|
| SS-172 | Porpoise | 1935 | Scrapped 1957 | Porpoise-Class |
| SS-173 | Pike | 1935 | Scrapped 1957 | Porpoise-Class |
| SS-174 | Shark | 1936 | Lost March 1942 | Porpoise-Class |
| SS-175 | Tarpon | 1936 | Sold 1957, foundered on tow to breakers | Porpoise-Class |
| SS-176 | Perch | 1936 | Lost March 1942 | Porpoise-Class |
| SS-177 | Pickerel | 1937 | Lost August 1943 | Porpoise-Class |
| SS-178 | Permit | 1937 | Scrapped 1958 | Porpoise-Class |
| SS-179 | Plunger | 1936 | Scrapped 1957 | Porpoise-Class |
| SS-180 | Pollack | 1937 | Scrapped 1947 | Porpoise-Class |
| SS-181 | Pompano | 1937 | Lost January 1944 | Porpoise-Class |
