YOU SAID:
I sail in my boat on a tranquil sea
INTO JAPANESE
私は静かな海に私の船で行く
BACK INTO ENGLISH
I go in my boat on the calm sea
INTO JAPANESE
私は私のボートで穏やかな海に行く
BACK INTO ENGLISH
I go on my boat on a calm sea
INTO JAPANESE
私は私のボートが穏やかな海に行く
BACK INTO ENGLISH
I go to my boat a calm sea
INTO JAPANESE
私は私のボートに穏やかな海を行く
BACK INTO ENGLISH
I go on my boat a calm sea
INTO JAPANESE
私は私のボートに穏やかな海を行く
BACK INTO ENGLISH
I go on my boat a calm sea
That didn't even make that much sense in English.