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 |