[Captain Kwok]

"A new and exciting feature to be implemented in the TNG Mod are Captains. Captains are basically generic characters that are treated as components and can be placed on ships or bases and give them particular abilities. For example, a Klingon ship might feature a Warrior Captain who might give the ship a 10% combat bonus or a Federation ship might have a Freighter Captain who gives a 10% maintenance reduction but a -10% reduction to defense. Captains cost only a few extra materials, take up no space, and are generally researched through military science. This nifty little feature will certainly add lots of fun to any SE:IV game. Similiar to Captains, there are also infantry troop components that can be placed on larger troop vehicles - check out Units & Vehicles."

That is the description of Captains from the TNG mod site. You don't have to add a Captain on every ship, I just thought it would add a little twist to the usual game.