| 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-calibre |
| Anti-Aircraft Weapons: |
| Light Weaponry: 2-.50 calibre; 2-.30 calibre 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 |
| Sonar: |
| 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. |
