海洋 かいよう調査 ちょうさ せんじゃありませんでした
kaiyōchōsasenjārimasendeshita

Noun
Desu Copula

The polite, past negative form of 海洋調査船

1. Was not an oceanographic research vessel.; Was not a marine research ship.

Past/Perfective
Negative
Polite
Terminal Form