Following shakedown, Raven was assigned to Mine Division 21 and operated out of Norfolk, Virginia, engaged in training, patrol, and escort of ships to and from port until 14 March 1941. She then escorted a convoy to Portsmouth, New Hampshire, and several convoys between Norfolk and Newport, Rhode Island. She resumed local operations out of Norfolk from 23 July 1941 to April 1942. In April 1942, serving as antisubmarine screen, she made runs to Halifax, Nova Scotia, and Portland, Maine.