- Naiade.
- Loutre.
- Protée.
- Lynx.
- Perle.
- Truite.
- Castor.
- Oursin.
- Meduse.
- Otarie.
- Phoque.
- Ludion.
- Alose.
- Anguille.
- Grondin.
- Dorade.
- Souffleur.
- Thon.
- Bonite.
- Esturgeon.
Twenty small harbour defence submarines, having a displacement of about 67 tons. They have petrol and electric motors, giving them a speed of 8 ½ knots on the surface and 5 knots when submerged. Their armament consists of one bow tube and two holders; four torpedoes are carried. Their complement is six officers and men.
Aigrette Class.
(Completed 1904.)
- Aigrette.
- Cicogne.
These two vessels are submersibles of the Laubeuf type, and were great improvements on their predecessors, the Triton Class. Their submerged displacement is 351 tons, and their dimensions 118 × 12 × 12 feet. A triple expansion steam engine of 200 H.-P. is used for surface propulsion and an electric motor of 150 H.-P. when submerged. Their speed is 10 knots and 8 ½ knots. Their maximum surface endurance is 700 miles at 8 knots, and submerged 60 miles at 6 knots. Their armament consists of one bow tube with four 18-inch torpedoes. Their complement is about fifteen officers and men.
Argonaute.
(Completed 1905.)
A submersible designed by M. Bertin (late Chief Constructor French Navy). This vessel, which was first named Omega, has a displacement of about 300 tons. She is driven by steam and electricity, and has a speed of 11 knots and 9 knots. Her armament consists of two bow tubes and two holders, with six 18-inch Whitehead torpedoes. The complement is about seventeen officers and men.