Kammala wannan jumla: "I-401" da "Segundo" sun isa Sagami Bay a gabar tekun Honshu da karfe 05:00 na ranar 31 ga Agusta 1945. An tayar da tutar Amurka a kan "I-401", kuma Nambu ya gabatar da jami'in da ke jagorantar ma'aikatan kyauta tare da "katana" biyu a matsayin alama ta mika wuya. Daga baya a ranar, wani sabon kyautar kyauta daga jirgin ruwa na jirgin ruwa ya zo a kan "I-401" kuma ya sauya ma'aikatan kyautar "Segundo", bayan da "I-401" ya ci gaba zuwa Yokosuka kuma ya ɗaure tare da "I-14" kusa da "Proteus" da kuma jiragen ruwa na Amurka guda goma sha biyu da aka zaɓa don wakiltar Amurka Navy Submarine Force a gasar cin kofin duniya.
Bikin mika wuya na Jafananci a Tokyo Bay. Da karfe 08:00 na ranar 1 ga Satumba, 1945, an saukar da tutar yaƙin sojojin ruwan Japan, kuma a yayin bikin mika wuya a ranar 2 ga Satumba, 1945, Kwamandan, Sojojin Ruwa na Ruwa, Amurka Pacific Fleet (COMSUBPAC), Mataimakin Admiral Charles A. Lockwood, ya ba da umarnin cewa a ɗora tutar sa a kan jirgin "I-401".