Mezue ahịrịokwu na-esonụ: Mgbe "I-1" 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 na 11 June 1942 "I-1" setịpụrụ maka Aleutian mmiri na ụlọ ọrụ na "I-2", "I-3", "I-4", na "I-7" na-amalite ya anọ agha patrol. Na 20 June 1942, "I-1", "I-2", na "I-3" sonyeere akara patrol "K" na North Pacific Ocean n'etiti na. N'etiti ọnwa Julaị n'afọ 1942, ụgbọ agha Amerịka a na-amaghị ama - ikekwe ọ bụ nke United States Coast Guard cutter - wakporo "I-1" na North Pacific Ocean n'ebe ndịda nke Adak Island ma chụrụ ya ruo awa iri na itoolu tupu "I-1" emechaa daba ma gbapụ. Na 20 Julaị 1942, a kpọghachiri "I-1" na ndị agha na-aga n'ihu ma nata iwu n'ụbọchị ahụ ka ọ laghachi na Yokosuka, nke ọ ruru na 1 Ọgọst 1942.