Complement Modifier
The boarding party’s relative size plays a significant role in how quickly they can overcome defenders and inflict damage, represented by a modifier to the boarding attack. To calculate this modifier, compare the number of combatants in the boarding party to the defending ship’s complement, using the following table.
| Boarding Party Size | Complement Modifier |
|---|---|
| Less than 10% of the target’s complement | –8 |
| 10–20% of the target’s complement | –4 |
| 20–50% of the target’s complement | +0 |
| 50–80% of the target’s complement | +2 |
| 80–100% of the target’s complement | +4 |
| Larger than the target’s complement | +8 |
Source
Starship Operations Manual pg. 41
