Emeraude Class.

(Completed 1906–8.)

These six vessels are of the Maugas type and are sea-going submarines with a submerged displacement of over 400 tons. They have petrol and electric motors of 600 H.-P. and 450 H.-P., respectively. Their surface speed is 12 knots and submerged 8 ½ knots. Their surface cruising radius is just over 1,000 miles at economical speed. Their armament consists of two tubes and four holders with 8 torpedoes of the usual pattern. Their complement is seventeen officers and men.