Naval Unit that specializes in melee combat and quick movement.
Naval Unit that attacks as a melee unit. It is significantly stronger and faster than the Caravel.
A corvette is a small warship. It is traditionally the smallest class of vessel considered to be a proper (or "rated") warship. The warship class above is that of frigate. The class below is historically sloop-of-war. The modern types of ship below a corvette are coastal patrol craft and fast attack craft. In modern terms, a corvette is typically between 500 tons and 2,000 tons although recent designs may approach 3,000 tons, which might instead be considered a small frigate.