救難 きゅうなん浮標 ふひょうではありませんでした
kyūna nfuhyōdewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 救難浮標

1. Was not a distress buoy.; Was not a life buoy.

Past/Perfective
Negative
Polite
Formal Register