a chance of burning out. In Ver. 2.5 the beam weapon system was refined, and the former class A became class 3, the former class B became class 2 and so on. In theory, there is now no limit to how powerful a beam weapon can be; for instance, a massive super ship could have a beam weapon of class 10 (or higher), although such an application would be impractical due to the increases of mass and point cost. The ship would have a better chance of inflicting more damage with several smaller weapons instead of one super weapon. Other systems Other kinds of offensive weapons include Pulse Torpedoes, Needle Beams (which can target a specific system on an enemy ship and disable it), Submunition Packs, Missiles, Minelayers and "mega-damage" weapons, such as the Nova Cannon and Wave Gun. Ships can be protected by Point-Defense Systems (PDSs), which are clusters of smaller weapons used to shoot down missiles and enemy fighters. There are also Screen systems to use against beam attacks, though not all weapons are impeded by them; missiles and mass driver projectiles can pass through to the hull, which are why PDSs can be an asset. Some other miscellaneous systems include Reflex Fields (which have a chance of deflecting a beam back at an attacker), Cloaking Fields, and Enhanced Sensors. Ships are required to include Fire Control sensors in their designs. Without firecons a ship cannot select targets; the more firecons incorporated into the design, the more targets the ship can fire at per turn. A specialised firecon, the Area Defence Fire Control, allows a ship's PDS to attack missiles and fighters aimed at other targets, in the manner of an Aegis ship. Fleet Book Vol. 2: The Xeno Files added even more weapons including mass drivers, strange alien weapons, and living ships hulls. Fighters If players include carriers in their fleets, they may dispatch groups of fighters into battle. There are many kinds of specialized fighter for different tactical attacks. Interceptors, for instance, have better chances of destroying enemy fighters but have no anti-ship strike ability, while Torpedo Fighters have a heavy one-shot anti-ship punch but are vulnerable to other fighters. List of available Full Thrust releases Full Thrust - published 1991 (out of print). Full Thrust: Second Edition - published 1992 (the core rule book). Full Thrust: More Thrust - published 1993 (now out of print,