Tactical Boarding Resolution

In general, a boarding party encounter’s CR is 1 less than the tier of the enemy starship (e.g. boarding or repelling invaders from a tier 9 starship is a CR 8 encounter). Increase the CR by 1 if the boarded ship’s BR is at most 5 higher than the boarding attack modifier. Conversely, decrease the CR by 1 if the boarding attack modifier is at least 15 lower than the boarded ship’s BR.

These values assume that only some of the PCs are participating in the encounter, with the rest remaining at their posts. If the entire party participates, consider increasing the CR by 1 or more to provide the appropriate challenge.

If the PCs successfully overcome the combat challenge, they deal damage to the enemy starship as if they had succeeded at their boarding attack. If they succeed within 3 rounds (or otherwise achieve an extraordinary victory, at the GM’s discretion), the PCs also incapacitate a fraction of the enemy ship’s complement as though the boarding attack exceeded the BR by 5.

If the PCs successfully overcome the combat challenge, they treat the boarders as if they had failed the boarding attack by 5. If they succeed within 3 rounds (or otherwise achieve an extraordinary victory, at the GM’s discretion), the PCs also incapacitate a fraction of the enemy’s boarding party as though the boarding attack failed the BR by 10.