USS S-31 (SS-136) - Recommissioning

Recommissioning

S-31 was recommissioned at Philadelphia on 18 September 1940. Assigned to SubDiv 52, she operated out of New London, Connecticut, into December, then moved south to the Panama Canal Zone. With the end of the spring of 1941, she returned to her New London base for submarine and antisubmarine warfare training exercises along the New England coast. In November, she returned to Philadelphia; underwent overhaul, and, in January 1942, rejoined her division at New London.