Buuxi weedha soo socota: Saacadda 08:20 ee 30ka Ogosto 1945, "I-400" waxay ku biireen shirkadda "I-14" iyo "Proteus" oo ku sii jeeday Tokyo Bay, halkaas oo ay ku soo xirteen 14:58 isla maalintaas. Calanka Mareykanka waxaa lagu taagay markabkeeda 05:00 markay ahayd 31kii Ogosto 1945, iyo 14:45 "I-400", "I-14", iyo "Proteus" waxay bilaabeen inay u guuraan meel cusub oo ay ku xiran yihiin saldhiga quusta ee Yokosuka, halkaas oo "Proteus" ay ku xiran tahay 16:50. Laba iyo toban doomood oo ciidamada badda Mareykanka ah ayaa loo doortay in ay matalaan ciidamada badda Mareykanka
Xafladda Japan ee ku saabsan bixitaanka Tokyo Bay ayaa sidoo kale lagu soo bandhigay halkaas, iyo "I-401" ayaa yimid 31kii Ogosto sidoo kale. Intii lagu guda jiray xafladda is dhiibista ee 2 Sebtember 1945, Taliyaha, Ciidanka Submarine, Ciidanka Badweynta Baasifigga ee Mareykanka (COMSUBPAC), Kuxigeenka Admiral Charles A. Lockwood, wuxuu amar ku bixiyay in calankiisa shaqsiyeed lagu taago markabka "I-400" iyo "I-401".