On July 6, 1944, LCDR Street reported to the Portsmouth Naval Shipyard to fit out the , his first command. Commissioning the ship in November, the captain took his new boat for shakedown training in Long Island Sound and further training in waters off Panama and Hawaii. The ship's first war patrol, commencing March 3, 1945 was southwest of Kyūshū, Japan's southernmost island. By that point in the war, most of Japan's merchant fleet had already been sunk, but Street went into shallow water close to shore and found several ships.