| Category | Weapons |
| Type | heavy mounted crossbow |
| Cost | 350 GP |
Siege crossbows are affixed to tripods or the ramparts of fortifications. These weapons necessitate a Strength score of 17 or higher to load, or the combined efforts of two or more entities possessing 25 Strength points. The velocity of the projectile confers a +3 bonus to attack rolls. While the weapon is ponderous and unwieldy, a creature with a Strength score of 19 or greater can operate it without requiring mounting.