Fighter

Fighters are single-pilot combat ships, they're usually very small and equipped with powerful antiproton drives. They are highly maneuverable, but incapable of FTL.

Most fighters have low-power screens and surprisingly powerful railguns or lasers.

Until recently, fighters were rarely used, because they didn't have the ability to affect a ship larger than another fighter. But human engineers recently developed the penetrator torpedo, which is capable of disabling a ship's kinetic screens.