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|Length:||64 m (210 ft)|
|Range:||3,500 mi (5,600 km) at 7.5 kn (13.9 km/h; 8.6 mph)|
The Circé-class submarines were a sub-class of the 600 Series built for the French Navy prior to World War II. There were four vessels in the class, built to a Schneider-Laubeuf design. They were ordered in 1925 and completed by 1927.
The Circé class had a displacement of 615 tons surfaced and 776 tons submerged. They had an endurance of 3,500 miles at 7.5 knots, with a maximum surface speed of 14 knots, and a submerged speed of 7.5 knots. Their armament was seven torpedo tubes (3 forward, 2 midships, and 2 aft) with an outfit of 13 torpedoes. As with all French submarines of this period, the midships torpedo tubes were fitted externally in trainable mounts. They had a single 3 inch/76mm and two 8mm machine guns, and were manned by crews of 41 men.
- Circé was at Bizerta in June 1940. She was seized in 1942 and became the Italian FR117. She was scuttled in 1943.
- Calypso was at Bizerta in June 1940. She was seized in 1942, but wrecked by Allied bombing in 1943.
- Thétis was at Toulon in June 1940. She was scuttled there in November 1942.
- Doris was sunk in the North Sea in May 1940 by the German submarine U-9.
- Bagnasco p.44
- Conway p.273
- Bagnasco, E :Submarines of World War Two (1977) ISBN 0-85368-331-X
- Conway : Conway's All the World's Fighting Ships, 1922-1946 (1980) ISBN 0831703032