Spelljammer Size Modifiers
- Tiny: -25 (20' long or less)
- Small: -10 (21' to 50 feet long)
- Medium: -0 (51' to 100' long)
- Large: +10 (101' to 200' long)
- Huge: +25 (201' to 400' long)
- Gargantuan: +40 (401' or longer)
| Type | Spell Cannon | Ballista | Light Catapult | Medium Catapult | Heavy Catapult |
| Base Chance | 60 | 50 | 30 | 30 | 30 |
| Damage | 10d6 | 4d8 | 4d10 | 5d10 | 6d10 |
| PB Range | 250 feet | 50 feet | 50 feet | 75 feet | 100 feet |
| Ranged | -1 per 25 feet | -1 per 5 feet | -1 per 10 feet | -1 per 10 feet | -1 per 10 feet |
| Minimum Range | None | None | 25 feet | 50 feet | 75 feet |
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