Patrolling off the Cape Verde Islands on 13 May, she made a sound contact, and mounted a deliberate attack with depth charges and hedgehogs which sank the RO-501, the former U-1224.

She served briefly to aid submarines in training out of New London, Connecticut, and on 2 August sailed from New York on the first of five convoy escort voyages to north African ports.

Francis M. Robinson saw one sail off to port under her own power, and remained with the other, sending a damage control party on board to assist in stopping flooding, until a tug came out of Gibraltar.

She first arrived at Key West, her base for the remainder of her naval career, on 6 February 1947, and from that time conducted development operations in anti-submarine warfare.

[2] In addition to the Presidential Unit Citation, Francis M. Robinson received one battle star for World War II service.