The Roland Morillot-class submarine was a series of 13 submarines planned to be operated by the French Navy to replace the s. While the first boat was ordered in 1934 and three were laid down, none were complete by the Fall of France and the entire class was cancelled.
Development and design The French Navy envisioned the Roland Morillot-class submarines to replace the older , and the two classes featured a similar design. However, the new design included more powerful diesel engines that could have theoretically produced an additional at the expense of a shorter range. One boat was ordered in both 1934 and 1937 with three in 1938 and a further eight in 1940. The first three—named Roland Morillot, La Praya, and La Martinique—were laid down at the Cherbourg Naval Base, with the next two boats named La Guadeloupe and La Réunion. During the Fall of France, the partially built submarines were demolished on 18 June 1940 and the rest of the boats were cancelled.
The design featured an overall length of , with a beam of and a draught of . The boats displaced 1,817 tons surfaced and 2,416 tons submerged and carried a complement of 70. Propulsion was provided by two shafts driven by diesel engines for surface running and electric motors for submerged operations, which could output surfaced for and submerged to produce . The submarines carried 95 tons of fuel oil for a range of at a cruising speed of . Armament consisted of ten torpedo tubes, two torpedo tubes, one /40 Modèle 1936 deck gun, and two twin-mounted anti-aircraft machine guns.
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