巡航 じゅんこう速度 そくどではありませんでした
junkōsokudodewārimasendeshita

Noun
Desu Copula
no-Adjective

The polite, past negative form of 巡航速度

1. Was not cruising speed.; Was not at cruising speed.

Past/Perfective
Negative
Polite
Formal Register