Pedzisa mutsara unotevera: Pana 21 December 1941, "Ro-33" yakabva kuCam Ranh Bay kuti itange kutenderera kwayo yokutanga yehondo, yakapiwa nzvimbo inoshanda muSouth China Sea kumabvazuva kweSingapore mukutsigira
Kupinda kweJapan muBritish Malaya. Rwendo rwake rwakanga rwusina njodzi, uye akabva panzvimbo yake yepatrol musi wa 5 January 1942 kuti adzokere kuCam Ranh Bay, kwaakasvika musi wa 7 January 1942.