Spawners are capable of warping in ships, which can pursue enemies and attack them. The ships behave like normal ships, but are easily disposable and do not cost repair time.
A spawner warps in one or more ships at the same time as given by its Spawn Rate. The maximum number of active ships warped in by a spawner is given by its Spawn Limit. As long as the current number of active ships that originate from the spawner is less than the Spawn Limit, it can warp in more ships at every fixed interval (the Spawn Interval).