The minesweeper was at Ulithi from the 10th to the 19th. There her crew enjoyed rest and relaxation periods alternated with stints of work to prepare for the next operation: Okinawa. "Signet" sortied from Ulithi on the 19th, with the ships of six sweep units and a gunboat support division. They arrived off Kerama Retto, Okinawa Gunto, on the 25th and immediately began sweeping minefields around that stepping-stone to Okinawa. For the next three months, "Signet" swept mines, patrolled, screened transports, fought off air attacks, and supported ground troops.