After it has been winched at least 10 laps, you can fire the catapult. Right-click the catapult, select Machine and then select 'Fire'. If it was properly aimed and winched, you will either get a message in event window that you just missed the target, or that you've hit it. If it ''only'' says that you've hit nothing, your aim is off.
*Your skill must play a big part in aim, because I have set up a Catapult 10 spaces away from a target, fire . Firing 43 shots, and the first 42 were I hti hit nothing, and the 43rd was I hit the low stone wall.
== Ammunition ==