| Lead Boat: SS-62, U.S.S. O-1 |
| Length: 172' 4" |
| Beam: 18' |
| Draft: 14" 5" (Surface trim) |
| Displacement: 520 tons (surfaced); 629 tons (submerged) |
| Speed: 14 knots (surfaced); 10.5 knots (submerged) |
| Diving Depth: 200' (test depth) |
| Range: |
| Endurance: |
| Crew: 2 officers, 27 enlisted |
| Deck Gun: 1-3"/23 |
| Anti-Aircraft Weapons: Machine guns |
| Light Weaponry: |
| Torpedoes: 4-18" torpedo tube (bow), 8 torpedoes |
| Engines: 2-diesel, direct drive |
| Motors: 2 DC electric motor/generators |
| Radar: |
| Sonar: |
| Wartime Modifications: |
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