USS Porpoise (SS-172)

	USS Porpoise (SS-172)
History
United States
Builder	Portsmouth Naval Shipyard, Kittery, Maine
Laid down	27 October 1933
Launched	20 June 1935
Commissioned	15 August 1935
Decommissioned	15 November 1945
Recommissioned	8 May 1947
Stricken	13 August 1956
Fate	Sold for scrap 14 May 1957
General characteristics
Class & type	Porpoise-class diesel-electric submarine
Displacement	1,310 long tons (1,330 t) standard, surfaced, 1,934 long tons (1,965 t) submerged
Length	283 ft 0 in (86.26 m) (waterline), 301 ft 0 in (91.74 m) (overall)
Beam	24 ft 11+3⁄4 in (7.614 m)
Draft	13 ft 10 in (4.22 m)
Propulsion	As Built: 4 × Winton Model 16-201A 16-cylinder two-cycle diesel engines, 1,300 hp (970 kW) each, driving electrical generators through reduction gears, 2 × 120-cell Exide VL31B batteries, 4 × high-speed Elliott electric motors, total 2,085 hp (1,555 kW) three General Motors six-cylinder four-cycle 6-228 auxiliary diesels; Re-engined (1942): 4 × GM two-cycle Model 12-278A diesels, 1,200 hp (0.89 MW) each, two shafts;
Speed	19 kn (35 km/h) surfaced, 8 kn (15 km/h) submerged
Range	6,000 nmi (11,000 km) at 10 kn (19 km/h), 22,000 nmi (41,000 km) @ 8 kn (15 km/h) with fuel in the main ballast tanks, (bunkerage 93,129 US gallons (352,530 L) maximum, 89,945 US gallons (340,480 L) typical, 1944)
Endurance	10 hours @ 5 kn (9.3 km/h), 36 hours at minimum speed submerged
Test depth	250 ft (76 m)
Complement	5 officers, 9 chief petty officers, 42 enlisted (1944)
Armament	6 × 21 inch (533 mm) torpedo tubes (four forward, two aft; 16 torpedoes), (two external bow tubes added 1942), 1 × 3 in (76 mm)/50 cal deck gun, 2 × 0.3 cal (7.62 mm) machineguns

USS Porpoise (SS–172), the fifth United States Navy ship to bear her name, was the lead ship of her class of submarines.

History
USS Porpoise (SS-172)
United States
Builder	Portsmouth Naval Shipyard, Kittery, Maine
Laid down	27 October 1933
Launched	20 June 1935
Commissioned	15 August 1935
Decommissioned	15 November 1945
Recommissioned	8 May 1947
Stricken	13 August 1956
Fate	Sold for scrap 14 May 1957
General characteristics
Class & type	Porpoise-class diesel-electric submarine
Displacement	1,310 long tons (1,330 t) standard, surfaced, 1,934 long tons (1,965 t) submerged
Length	283 ft 0 in (86.26 m) (waterline), 301 ft 0 in (91.74 m) (overall)
Beam	24 ft 11+3⁄4 in (7.614 m)
Draft	13 ft 10 in (4.22 m)
Propulsion	As Built: 4 × Winton Model 16-201A 16-cylinder two-cycle diesel engines, 1,300 hp (970 kW) each, driving electrical generators through reduction gears, 2 × 120-cell Exide VL31B batteries, 4 × high-speed Elliott electric motors, total 2,085 hp (1,555 kW) three General Motors six-cylinder four-cycle 6-228 auxiliary diesels Re-engined (1942): 4 × GM two-cycle Model 12-278A diesels, 1,200 hp (0.89 MW) each, two shafts
Speed	19 kn (35 km/h) surfaced, 8 kn (15 km/h) submerged
Range	6,000 nmi (11,000 km) at 10 kn (19 km/h), 22,000 nmi (41,000 km) @ 8 kn (15 km/h) with fuel in the main ballast tanks, (bunkerage 93,129 US gallons (352,530 L) maximum, 89,945 US gallons (340,480 L) typical, 1944)
Endurance	10 hours @ 5 kn (9.3 km/h), 36 hours at minimum speed submerged
Test depth	250 ft (76 m)
Complement	5 officers, 9 chief petty officers, 42 enlisted (1944)
Armament	6 × 21 inch (533 mm) torpedo tubes (four forward, two aft; 16 torpedoes), (two external bow tubes added 1942), 1 × 3 in (76 mm)/50 cal deck gun, 2 × 0.3 cal (7.62 mm) machineguns