The Praex-class was a type of escort starship, a brand new design used by the Romulan Star Empire circa the year 2290.
History and specifications[]
They were created to be fast attack ships and utilized cloaking devices to sneak up on enemy ships before decloaking and unleashing light plasma weaponry. Such ships had been known to destroy much larger opponents that had underestimated their capabilities, which made the Praex a deadly enemy to face on the battlefield.
They were both cheap and easy to produce, which made them quite common; however, they were incredibly fragile against enemy ships, mainly due to their small size. (ST video game: Klingon Academy)