It seems that in the vehicle size file, if a ship is given the requirement of Pct Fighter Bays, the AI will declare it a carrier( try a full tech test of the AI design creation files). If the idea was to give a shuttle bay ability to some sizes of ships, try doing it this way in the vehicle size file.
Name := Light Cruiser
Number of Abilities := 3
Ability 1 Type := Combat To Hit Defense Plus
Ability 1 Descr := Small size makes ship 10% harder to hit in combat.
Ability 1 Val 1 := 10
Ability 1 Val 2 := 0
Ability 2 Type := Launch/Recover Fighters
Ability 2 Descr :=
Ability 2 Val 1 := 1
Ability 2 Val 2 := 2
Ability 3 Type := Cargo Storage
Ability 3 Descr := Provides 20kT of cargo space.
Ability 3 Val 1 := 20
Ability 3 Val 2 := 0
It might make AI design creation testing easier if the entries for “Max Ship Size Tonnage” in the AI Settings Files were all set to zero.
