Playing STO, when you make a character you have to choose one class, and in this game there are three kinds of classes. Following we will introduce to you one by one, please have a look.
Captain escorts generally which are high dps class(star trek gold) ships. Tactical characters are also strong in ground combat using abilities in suppression fire, grenades, focus fire, and unique hand to hand combat abilites.
Captain cruisers generally, for tanking purposes and increase survivability, and also act like healers for otherships, such as sending repair crews, transferring power, and rotating shield frequences. In ground combat they offer fire support, gun turrent, energy shield walls, Shield and healing generator.
Is a support character(STO powerleveling) and pilots science vessels. They heal as far as ground combat is concerned. Science vessels do not have much as far as armaments are concerned but they are highly invaluable. They offer so many special abilities, such as targeting subsystems, doing sensor scans to detect cloak, or summoning a halographic fleet to fight by your side or your fleet's side. Auxillary power and your deflector dish directly affect the strength of your special abilities.