Siege Weapons

Bolt Throwers
The following bolt throwers are found in Devil's Den:

Arbalest/Belly Bow
Called a “Belly Bow” because it can be braced against the belly when reloaded. It's basically a heavy crossbow.
 * 200 enc
 * +5 damage
 * 2 round reload
 * Range 50/100/200
 * Ordinary weapon

Ballista
Big enough that it has to be built into a fortification or cart.  
 * +12 damage with Impact and AP
 * 6 crew, 8-round reload
 * Range: 150/300/600
 * Specialist Weapon Group: Engineering

Scorpion
This is a heavier crossbow, too big to carry. It must be mounted on a tripod of some kind.
 * +6 damage with Impact
 * 2 crew = 3 round reload
 * 3 crew = 2 round reload
 * range 100/200/400
 * Ordinary weapon