I know there's a section in Battlefleet Koronus that offers a simplified version that's probably really great for huge combats with lots of mook ships. However when it comes to battles with named rivals I want it to be a bit challenging or a bit more challenging anyway.
The problem as I see it is that most NPCs especially the ones in the adventure and splatbooks have really godawful pathetic BS characteristics and most of them only have "competent" crews. My players are all rank 3 or higher at this point, they've taken advances and there are now half a dozen of their characters running around during a combat. The result of this is that they're pretty sure to hit in starship combat and out ship is really brutally macro-cannon focused. They're going to be making BS rolls at sixty+ as a general rule.
Meanwhile say Krawkin Feckward per the books I have in front of me and my best understanding of them is going to be making BS rolls at 40ish at best. I'm thinking at this point of just enacting my own little GM rule where I'll simplify the enemy ship BS roll by adding the crew competency and the Rival's BS up to a maximum of sixty before any range modifiers or other ship actions.
In addition I figure I'll run three ship actions per turn by the stats of any established NPC/NPCs on the enemy ship just to keep it interesting. What do you think?