救難 きゅうなん浮標 ふひょうじゃなかったです
kyūna nfuhyōjanakattadesu

Noun
Desu Copula

The polite, past negative form of 救難浮標

1. It wasn't a rescue buoy.; It wasn't a distress signal buoy.

Past/Perfective
Negative
Polite
Casual Register