An item referred to the Navy and Military Record dated 3 September 1924 reporting that the French minister of marine ordered that the submarines of a new design named Redoubtable (1) and Vengeur (2) were to be lay down and to be ready in April 1927 for executing their trials.
Notes
1. Hull number Q136. Ordered on 26 July 1924, laid down at Cherbourg on 1 July 1925, launched on 24 February 1928, commissioned on 10 July 1931, scuttled while docked at Nord du Mourillon on 27 November 1942 to prevent use by German forces which took the useful parts out of her. Towed towards Brégaillon on 25 January 1944, sunk by an American air attack on 11 March 1944, salvaged and broken up in 1948.
2. Hull number Q137. Ordered on 26 July 1924, laid down at Cherbourg on 22 August 1924, launched on 11 January 1926, commissioned on 18 December 1931, scuttled on 27 November 1942 and broken up in 1043.
