Mezue ahịrịokwu na-esonụ: Mgbe "I-6" nọ na Yokosuka, mkpọsa nke Aleutian Islands malitere na 3-4 June 1942 na
Ndị Japan wakporo Dutch Harbour, Alaska, nke ndị Japan na-enweghị ihe ha mere na-esochi ngwa ngwa na Aleutian Islands nke Attu na 5 June na Kiska na 7 June 1942. Na 10 June 1942, "I-1", "I-2", "I-3", "I-4", "I-5", "I-6", na "I-7" e kenyere ndị Northern Force maka ọrụ na Aleutians, na ma 17 ma ọ bụ 20 June 1942 "I-6" setịpụrụ maka mmiri Aleutian iji malite nche agha nke anọ ya. Ọ sonyeere ndị ọrụ nchekwa "K" na mpaghara Unimak Pass. Na 7 Julaị 1942, ọ natara iwu ịkwaga na mpaghara Kiska. Mgbe ndị fọdụrụ n'ime Submarine Squadron nyere iwu ka ha laghachi Japan na 20 Julaị 1942, e nyere ya iwu ka ọ nọrọ ma rụọ ọrụ site na Kiska.