Kammala jumla mai zuwa: Yayin da "I-6" yake a Yokosuka, yakin tsibirin Aleutian ya fara ne a ranar 3 zuwa 4 ga Yuni, 1942 tare da
Jirgin saman Japan ya kai hari kan Dutch Harbor, Alaska, wanda aka biyo baya da sauri ta hanyar mamayewar Jafananci ba tare da hamayya ba a cikin tsibirin Aleutian na Attu a ranar 5 ga Yuni da Kiska a ranar 7 ga Yuni, 1942. A ranar 10 ga Yuni, 1942, "I-1", "I-2", "I-3", "I-4", "I-5", "I-6", da "I-7" an sake sanya su zuwa Arewacin Arewa don aiki a cikin Aleutians, kuma a ranar 17 ko 20 ga Yuni, 1942 "I-6" ya tashi zuwa ruwan Aleutian don fara aikinsa na hudu. Ta shiga cikin layin "K" a yankin Unimak Pass. A ranar 7 ga Yuli, 1942, ta karbi umarni don matsawa zuwa yankin Kiska. Lokacin da aka umarci sauran Sojojin Ruwa na Submarine su koma Japan a ranar 20 ga Yuli, 1942, an umurce ta da ta zauna a baya kuma ta yi aiki daga Kiska.