| Displacement: | c100t |
| Dimensions: | 131ft 3in wl?, 137ft 10in deck x 16ft 5in |
| Same, meters: | 40.00, 42.00 x 5.00m |
| Machinery: | 30nhp (Cavé). Oscillating cylinders |
| Hull material: | Iron |
| Armament: | ? |
| Complement: | ? |
| Name | Builder | Launched | Fate |
| SERPENT | Cavé | 3.11.43 | Stk. 11.1.53 |
| BASILIC | Cavé | 3.11.43 | Stk. 31.12.54 |
| Displacement: | 161t |
| Dimensions: | 132ft 7in wl, 138ft 9in deck x 16ft 5in x 3ft 7in |
| Same, meters: | 40.40, 42.30 x 5.00 x 1.10m |
| Machinery: | 30nhp (Cavé) |
| Hull material: | Iron |
| Armament: | 2-12cm No.2 shell |
| Complement: | 25 |
| Name | Builder | Launched | Fate |
| SERPENT | Cavé | 20.1.52 | Stk. 18.11.63 |
| BASILIC | Cherbourg | 26.9.54 | Stk. 3.6.73 |
| Displacement: | 206t |
| Dimensions: | 112ft 8in x 18ft 9in x 6ft 3in |
| Same, meters: | 34.35 x 5.72 x 1.91m |
| Machinery: | 40nhp (Rochefort). Direct, 6.70kts |
| Hull material: | Wood |
| Armament: | ? |
| Complement: | 25 |
| Name | Builder | Launched | Fate |
| GRAND BASSAM | Rochefort | 1.7.52 | Stk. 16.3.68 |
| EBRIE | Rochefort | 10.10.53 | Lost 15.4.56 |