特殊 とくしゅ潜航 せんこう ていじゃなかったです
tokushusen kōteijanakattadesu

Noun
Desu Copula

The polite, past negative form of 特殊潜航艇

1. Wasn't a special submersible.; Wasn't a special submarine.

Past/Perfective
Negative
Polite
Casual Register