Emperor Class Battleship & Crew Members page

As the ship levels up, it gains Crew Points which can be allocated to a crew member to increase their effectiveness:
-Commissar/Daemonic Influence/Caged Squig/Harlequin: Reduces the chance of insubordination, and allows to execute the insubordinate captain to stop his ship from disengaging. For Imperial ships with Imperial Navy favour Commissar leveling up is meaningless (IN ships can't be insubordinate). For Ork ships, Caged Squig is unlocked by installing an upgrade.
-Navigator/Dark Navigator/Weirdboy/Void Dreamer: Reduces the chance of a ship being Lost in the Warp when using a Warp Jump.
-Techpriest/Heretek/Mekboy/Bonesinger: Increases effectiveness of Emergency Repairs.
-Master Gunner (same name for all factions): Increases the crit chance of all Macrocannons and Lances.
-Ratings/Cultists/Boyz/Bladesworn: Increase Troop Value.
-Servitors/Slaves/Grotz/Spirit Stones: Reduce cooldown of all skills.
-Squadron Sergeant (same name for all factions): Only on ships with launch bays, increases survivability of attack craft.