manner of unlikely spaces. An ammunition locker was placed under the Wardroom table, and shells were even stored in the engine room. Naturally, this practice became a matter of some concern and, although strict regulations were imposed on the stowage of ammunition (particularly regarding temperature requirements), the rules were never completely adhered to. By these measures, the S boats managed to achieve long patrol times in operational areas, the record of 49 days being set by Sirdar.
During 1941 and 1942, S Class submarines were fitted with the first radar sets for surface as well as air search. During the first stages of the war, S boats were very active in the North Sea and the Mediterranean. As a result, losses were rather heavy and, in the North Sea alone, six of the class were lost in 1940. As the war progressed, however, operation of the class became more
