YOU SAID:

The sailing ship was sinking at open sea

INTO JAPANESE

公開した海に沈みかけていたが帆船

BACK INTO ENGLISH

Was sinking into the open sea sailing ship

INTO JAPANESE

帆船オープン海に沈んでいた

BACK INTO ENGLISH

Had sunk into the open sea sailing

INTO JAPANESE

外洋航海に沈んでいた

BACK INTO ENGLISH

Was submerged in the ocean voyage

INTO JAPANESE

遠洋航海に沈んでいた

BACK INTO ENGLISH

Had sunk to the ocean voyage

INTO JAPANESE

遠洋航海に沈んでいた

BACK INTO ENGLISH

Had sunk to the ocean voyage