Circe Class.

(Completed 1907.)

These two vessels are of the Laubeuf type, and are improvements on the Aigrette class. They have a submerged displacement of about 450 tons and are 160 feet in length. They are driven by a steam engine of 440 H.-P. (flash boiler and oil fuel) when on the surface, and by electric motors when submerged. Their speed is 11 knots and 8 knots; and the range of action 1,000 miles. Their armament comprises two tubes and four holders with eight torpedoes. The complement is 21 officers and men.