YOU SAID:
Grandfather please stand on the shoulders of my father while he's deep-sea fishing
INTO JAPANESE
おじいさん、お父さんが沖釣りをしている間、お父さんの肩に乗ってください
BACK INTO ENGLISH
Grandfather, sit on your father's shoulders while he's offshore fishing
INTO JAPANESE
おじいさん、お父さんが沖で釣りをしている間、お父さんの肩に座って
BACK INTO ENGLISH
Grandfather sits on Dad's shoulders while he's fishing offshore
INTO JAPANESE
父が沖で釣りをしている間、祖父は父の肩に座っている
BACK INTO ENGLISH
My grandfather sits on my father's shoulder while he fishes offshore
INTO JAPANESE
父が沖で釣りをしている間、祖父は父の肩に座っている
BACK INTO ENGLISH
My grandfather sits on my father's shoulder while he fishes offshore
That didn't even make that much sense in English.