巡航 じゅんこう速度 そくどじゃなかったです
junkōsokudojanakattadesu

Noun
Desu Copula
no-Adjective

The polite, past negative form of 巡航速度

1. Wasn't cruising speed.; Wasn't at cruising speed.

Past/Perfective
Negative
Polite
Casual Register