GalCiv3 Forums
On carriers should I just fill them up entirely with fighters? What does that other interceptor module do?
The basic carrier module gives you 2 small sized ships that are set to assault ship role.
The interceptor and guardian modules give you 2 tiny sizes ships that are set to interceptor or guardian ship role respectively. Since they are tiny sized, most people find these ships not to be as useful as the basic module's assault ships.
Drone Interceptors are built on a tiny hull and are guaranteed to carry a beam weapon and a sublight drive. If they have space, they will add another two beam weapons and a shield generator in that order.
Guardian Fighters are built on a tiny hull and are guaranteed to carry a mass driver and an armor plate. If they have space, they will add another mass driver, a point defense component, and a shield generator in that order.
Assault Fighters are built on a small hull and are guaranteed to carry a beam weapon, a missile weapon, and a mass driver. If they have space, they will add an armor plate, a point defense component, a shield generator, a sublight drive, another beam weapon, another missile weapon, and another mass driver in that order. If they still have space after this, they will continue adding beam weapons, missile weapons, and mass drivers until no additional weapons can fit onto the hull.
The standard Assault Carrier module requires 70 capacity (support variety) and provides 2 assault fighters. The standard Drone and Guardian Carrier modules require 45 capacity (support variety) and provide 2 of the appropriate fighters. The advanced Assault Carrier module (or the Escort Carrier module) requires 70 capacity and provides 3 assault fighters (technically, it provides escort fighters, but the game currently does not distinguish between escort and assault fighters). I would therefore suggest that in general there is little point to using either Drone or Guardian Carrier modules except perhaps as filler components (though I'd probably sooner take engines/life support and perhaps some defenses); Assault Fighters are so much better than Drone Interceptors and Guardian Fighters that the lower capacity requirement probably isn't going to matter enough to make a difference, especially if you pick up the 30% support mass reduction instead of +1 moves per turn or the extra range for the first specialization after Interstellar Travel. Still, if you're really out after that fighter swarm ideal, go ahead. This is specifically for the unmodded game; if you've modded fighters to be more balanced with one another, or if you've modded carrier modules in any way, this may not be applicable.
As for how you should build carriers, that depends on how you want to use them. 'Optimal' is probably going to be found mostly by filling them up with Assault Fighters, at least at present; you're unlikely to get a better deal as far as firepower, defense, and HP density goes by filling the space with weapons, defenses, and HP boosters instead.
The assault fighters are without any doubt one of the most overpowered features of Carriers. Just disregard drones if you are not at the advanced fighter tech yet.
Drone interceptors are supposed to dive after enemy transports and take them out first, as only interceptors can attack supports while other ships are still alive. Unfortunately, they aren't durable enough to last more than a few seconds, so they never reach them before being killed.
Guardian drones are supposed to be the answer to this, as only Guardians can stop Interceptors once the latter is in range of the Supports, but they are wholly unnecessary because of how terrible drones are.
Interceptors will not attack support ships over escort ships.
Refer to the Ship Roles on the wiki.
The problem with interceptors is that while they are low on the targeting priority of many classes, they start very far forward at the beginning of battle, and usually have to survive 1 or 2 rounds of fire as they are the only ships "in range" of the enemy. Being tiny, with not much defenses, they usually get wiped pretty good.
If they survive these opening salvoes, then they work well once the targeting shifts to the escort/assault ships.
Instead of drone interceptors, use a medium/large ship in the interceptor role, as it can usually survive the opening salvoes, then just sit there and pot away at the enemy escorts, while your escorts/caps/assault absorb the enemy fire.
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