YOU SAID:
Captain, there is a cheetah aboard the pink ship.
INTO JAPANESE
船長、ピンク色の船の上にチーターがいます。
BACK INTO ENGLISH
Captain, there is a cheetah on a pink ship.
INTO JAPANESE
船長、ピンク色の船にチーターがいます。
BACK INTO ENGLISH
Captain, there is a cheetah on a pink ship.
That didn't even make that much sense in English.