Nisshin Maru
On 16 March 1944 while refitting at Fremantle, Commander F. D. Walker assumed command, and on 4 April, "Crevalle" sailed for the South China Sea. She sank a freighter 25 April, and the oiler, Nisshin Maru(16,801 tons) 6 May, and on 11 May surfaced off Negros Island in the Philippines on another daring special mission.