Gareb and Unique Captains

Gareb:
"At the start of the game, after set up, place a Captain Card under this card so that the Skill Number is visible. This is the Captain Skill of this card."
Do cards placed underneath Gareb count against the number of Unique cards that you can field? IE: If I place a Jean-Luc Picard under Gareb, does this prevent me from placing a Jean-Luc Picard on another ship?
"At the start of the game, after set up, place a Captain Card under this card so that the Skill Number is visible. This is the Captain Skill of this card."
Do cards placed underneath Gareb count against the number of Unique cards that you can field? IE: If I place a Jean-Luc Picard under Gareb, does this prevent me from placing a Jean-Luc Picard on another ship?