USS G-2

USS G-2, ex-Tuna, underway on the surface, prior to World War I, with crewmen on deck "getting a little fresh air"
History
United States
NameTuna
NamesakeThe tuna
BuilderLake Torpedo Boat Company, Bridgeport, Connecticut
Cost$479,347.46 (hull and machinery)
Laid down20 October 1909
Launched10 January 1912
Sponsored byMiss Marjorie F. Miller
Commissioned28 October 1912
Decommissioned2 April 1919
RenamedG-2 (Submarine No.27), 17 November 1911
Stricken11 September 1919
Identification
FateSunk at her moorings, 30 July 1919
General characteristics
Class & typeG-class submarine
Displacement
  • 400 long tons (410 t) surfaced
  • 516 long tons (524 t) submerged
Length161 ft (49 m)
Beam13 ft 1 in (3.99 m)
Draft12 ft 6 in (3.81 m)
Installed power
  • 1,200 bhp (890 kW) (gasoline)
  • 520 hp (390 kW) (electric)
Propulsion
Speed
  • 14 kn (26 km/h; 16 mph) surfaced
  • 10.5 kn (19.4 km/h; 12.1 mph) submerged
Range3,500 nmi (6,500 km; 4,000 mi) at 11 kn (20 km/h; 13 mph) on surface
Test depth200 ft (61 m)
Complement
  • 1 officer
  • 23 enlisted
Armament4 × 18-inch (450 mm) torpedo tubes, (2 internal in the bow, 1 external in bow, one external stern), 8 torpedoes

USS Tuna/G-2 (SS-27), also known as "Submarine No. 27", was a G-class submarine of the United States Navy (USN). She was the first ship of the USN to be named for the tuna, a large, vigorous, spiny-finned fish highly esteemed for sport and food, though she was renamed G-2 prior to launching.

While the four G-boats were nominally all of a class, they differed enough in significant details that they are sometimes considered to be four unique boats, each in a class by herself.