I te 7 o Tihema 1941, i whakatakotoria e te "I-122" e wha tekau ma rua nga momo 88 Mark 1 ki te raki-rawhiti o Singapore, katahi ka mau ki tana turanga tirotiro i te tomokanga rawhiti o Johore Strait me te "I-121". I Ahia ki te Rāwhiti, i tīmata te Pakanga Tuarua o te Ao i te 8 o Tihema 1941, a, ka whakaekehia e ngā ope Hapanihi
Ko Malaya o Ingarangi ki te raki o Singapore i taua rā. I whakawhiwhia ki te Southern Submarine Force i te 12 o Tihema 1941, ka karanga ia ki Cam Ranh Bay i te French Indochina i nohoia e Japan i te 14 o Tihema 1941. I te 18 o Tihema 1941, ka hoki ano ia ki te tautoko i te whakaekenga a Hapani o Philippines, i te taha o Davao i Mindanao i te kamupene me "I-124". I whakawhiwhia ki te Rōpū Submarine "A" me "I-121", "I-123", me "I-124" i te 26 o Tihema 1941, i whakaotihia e ia tana tirotiro i te 31 o Tihema 1941 i te taenga mai o ia me "I-124" ki Davao i hopukina hou i reira "Chōgei" i mahi "I-121", "I-122", me "I-124".