Rubuta ci gaba ga wannan sakin layi - A ranar 21 ga Disamba, 1941, "Ro-33" ya tashi daga Cam Ranh Bay don fara aikinsa na farko na yaki, ya sanya wani yanki na aiki a Kudancin Tekun China a gabashin Singapore don tallafawa mamayewar Japan
na Birtaniya Malaya. Rundunarsa ba ta da matsala, kuma ta bar yankinta na sintiri a ranar 5 ga Janairu 1942 don komawa Cam Ranh Bay, inda ta isa ranar 7 ga Janairu 1942.