YOU SAID:

I don't think a bigger boat will work, maybe an even bigger sub

INTO JAPANESE

大きな船が動作、さらに大きな sub では多分ないと思う

BACK INTO ENGLISH

Operation big ship, larger sub think maybe not

INTO JAPANESE

大きな船の操作、大きいサブは多分ないと思う

BACK INTO ENGLISH

Operation big ship, and larger sub probably don't think

INTO JAPANESE

大きな船の操作、および大きいサブおそらくないと思う

BACK INTO ENGLISH

Operation big ship, and larger sub probably don't think