なぎいかだじゃありませんでした
梛筏じゃありませんでした
nagiikadajārimasendeshita

Noun
Desu Copula

The polite, past negative form of なぎいかだ

1. Was not/weren't a raft.; Wasn't a raft-like structure.

Past/Perfective
Negative
Polite
Terminal Form
Usually Written in Kana