USS Bowfin Submarine Specifications
(SS-287)
CLASS:
Balao
CONSTRUCTED Portsmouth Navy Yard, Portsmouth, New Hampshire (actually located in Kittery, Maine)
KEEL LAID
23 July 1942
LAUNCHED
7 December 1942, hence her nickname the "Pearl Harbor Avenger"
SPONSOR
Mrs. Jane Gawne, wife of Captain James Orville Gawne, USN
COMMISSIONED
1 May 1943
COMPLEMENT
Originally 70 men (7 officers & 63 enlisted), later increased to 80 men (10 officers & 70 enlisted)
DISPLACEMENT
1,810 tons (diving trim); 2,415 tons (submerged)
LENGTH
311 feet 9 13/16 inches
MAXIMUM BEAM
27 feet 3 inches
MEAN DRAFT
15 feet 3 inches (diving trim)
FREEBOARD

12 feet 5 inches @ bow (diving trim)
3 feet 11 inches @ stern (diving trim)

PRESSURE HULL MAXIMUM DIAMETER
16 feet 3/8 inch
TORPEDO TUBES
6 bow and 4 stern (MK 39)
TORPEDOES
24 total (14 in reload racks) -- MK 14-3A, MK 18, MK 23, and MK 27
GUNS
Originally, one 4 inch 50-caliber (MK 12) and two 20 mms (MK 5). Finally, one 5 inch 25-caliber (MK 40), one 40 mm (MK 3) and one 20 mm (MK 10).
MAIN ENGINES Four General Motors Model 16-278A diesel; 16 cylinder V-type, 2-cycle, 8 3/4 bore x 10 1/2 stroke; 1,600 BHP developed @ 750 RPM (stbd. RH rotation, port LH rotation).
MAIN GENERATORS Four General Electric 1,100 kw; 2,650 amps/415 volts (propulsion rating); 3,600 amps/296 volts (battery charging rating).
MAIN MOTORS Four General Electric 1,375 HP; two-wire, direct-current, compensated compound/shunt, series and commutating field windings.
GEARS Combining and reduction type/reverse by reversing input.
2 -- 1,375 HP @ 1,300 RPM inputs
1 -- 2,740 HP @ 280 RPM output
BATTERIES Two 126-cell Exide type
SHAFT HORSEPOWER 5,480
MAXIMUM SPEED 20.25 knots surface speed; 8.75 knots submerged speed
PROPELLERS Two four-bladed, 8 foot diameter
RUDDER One balanced streamlined type. Train limits 38 degrees to port and starboard.
FUEL OIL CAPACITY 54,000 gallons normal; 116,000 gallons maximum


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