Interceptor Missiles (ICM) are small missiles that can be fired at incoming torpedos, assault rockets and rocket battery barrages. Before the torpedo or rocket attack is resolved, the player controlling the target ship can declare that it is launching ICMs. The player must declare how many ICMs the ship is using. The attack's chance to hit is determined as if the attack was hitting a reflective hull or a masking screen, whichever the ship is using. The number of ICMs launched by the target ship is multiplied by the modifier on the Combat Table, and the result is subtracted from the attack's chance to hit.