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| Name | No | Yard No | Builder | Laid down | Launched | Comp | Fate |
|---|---|---|---|---|---|---|---|
| i | Schneider, Chalon-sur-Saône, France | 4/1917 | 22.5.1919 | 1921 // --- | completed for France (O'Byrne) | ||
| ii | Schneider, Chalon-sur-Saône, France | 4/1917 | 30.9.1919 | 1921 // --- | completed for France (Henry Fournier) | ||
| iii | Schneider, Chalon-sur-Saône, France | 4/1917 | 5-6/1920 | 1921 // --- | completed for France (Louis Dupetit-Thouars) |
| Displacement standard, t | |
|---|---|
| Displacement normal, t | 342 / 513 |
| Length, m | 52.4 |
| Breadth, m | 4.70 |
| Draught, m | 2.70 |
| No of shafts | 2 |
| Machinery | 2 Schneider-Carels diesels / 2 electric motors |
| Power, h. p. | 1020 / 400 |
| Max speed, kts | 14 / 8 |
| Fuel, t | diesel oil |
| Endurance, nm(kts) | 1850(10) / 55(5) |
| Armament | 4 - 450 TT (bow, 4), 1 x 1 - 47/50 M1902 |
| Complement | 25 |
| Diving depth operational, m |
Requisitioned by French Government while building. Double-hulled, Laubeuf type.

