Pennant number
The French submarine "Curie was a British-built U class submarine, a member of the third group of that class to be built. Laid down as HMS "Vox for the Royal Navy she was transferred to the Free French Naval Forces on the day she was commissioned, where she served as "Curie" from 1943–46, but retaining her pennant number of P67. A later long hull U class submarine Pennant number 73 was named "Vox", serving in the Far East during 1945 and being scrapped on 1 May 1946. When P67 returned to the Royal Navy in July 1946 she re-assumed the name "Vox".