The base game of Star Trek Attack Wing consists of three ships, one for the main factions.
Every ship has one ship card that marks it as a capital ship, for the Federation it naturally is the Enterprise.
Additionally, there is a generic ship card that marks the ship only as "Galaxy Class":
The generic ship is of course a little bit weaker than the capital ship. Why is this second card even there? Under what circumstances would I play with a weaker "Galaxy Class Starship" instead of the stronger "U.S.S. Enterprise"?