Gar Class Specifications

Lead Boat: SS-206, U.S.S. Gar
Length: 307′ 2″
Beam: 27′ 7-1/2″
Draft: 14′ 3″ (Surface trim)
Displacement: 1,475 tons (surfaced); 2,370 tons (submerged)
Speed: 20 knots (surfaced); 8.75 knots (submerged)
Diving Depth: 250′ (test depth); ‘ (emergency)
Range: 11,000 miles @ 10 knots
Endurance: days
Crew: 6 officers, 54 enlisted
Deck Gun: 1 3″/50-caliber
Anti-Aircraft Weapons:
Light Weaponry: 2-.50 caliber; 2-.30 caliber machine guns, assorted small arms.
Torpedoes: 10-21″ torpedo tubes (6 bow, 4 stern); 24 Mark-14 torpedoes; Mark I, II Torpedo Data Computer
Engines: 4-1,600 HP main engines.
Motors: 4-685 HP motors, 2 per shaft, reduction gear drive.
Radar: Short range SD air detection radar; SJ surface search radar
Wartime Modifications: Cut down bridge fairwater, gun armament upgraded, improved radar, sonar and electronics.
Note: Some authorities consider the Gars to be a distinct class, separated from the Tambors by the two Mackerel class boats. Others consider them to be a part of the Tambor class, this latter group including the Navy’s official historians.


Hull NumberNameCommission DateFateClass
SS-206Gar1941Scrapped 1959Gar-Class
SS-207Grampus1941Lost March 1943Gar-Class
SS-208Grayback1941Lost February 1944Gar-Class
SS-209Grayling1941Lost September 1943Gar-Class
SS-210Grenadier1941Scuttled 4/22/43Gar-Class
SS-211Gudgeon1941Lost April 1944Gar-Class