Corvette
A corvette is a small, lightly armed and armored, fast vessel, used mostly for convoy escort, ranging between a destroyer and a gunboat in size and capable of interstellar duty.
They tend to be small and usually have a very small crew complement. They also usually sacrifice armor plating for raw speed, so they are not well suited for heavy combat. On a positive note, they are among the fastest warships in existence, can go toe to toe with fightercraft and expect to be victorious, and are usually very inexpensive. They are best used as scouting and patrol craft but are also good at light escort duties and in a pinch they can be called upon for surgical strike and zone defense missions. Their versatility makes them popular craft among navies.