The Fremantle-based US Submarines RASHER and RAY, sank two Japanese tankers, an escort aircraft carrier, and a transport. RASHER torpedoed the OTAKA, (escort carrier), the TEIYO MARU, (tanker), and the EISHIN MARU, (transport), in Luzon Strait. RAY torpedoed the NANSEI MARU, (tanker), in the Sulu Sea.