The reason saying the name nets corruption points is because it is indicative of an intent behind the actions. The invocation, which is a result of intent, causes the presence of warp energy. Thus, corruption.

This is also why saying Khorne in conversation does not generate corruption.

I'm with Cifer on the corruption bit, the game mechanics(and all the background) support corruption by the warp, not moral corruption. One can be incredibly corrupt like a serial killer and they will not spontaneously mutate a third arm afterall. The setting is about Law versus Chaos, not good versus evil.

For Callidia - For you to even KNOW the name of one of the four great chaos powers means you'll have had to do forbidden research and begun studying the occult OR to have been close to someone who did the same or exposed to it by the dark powers. In just about every bit of background, for a normal, uncorrupted human to even look on the marks of chaos or to hear one of their names spoken causes, at the very least, nausea.

For the OP - losing the guncutter would force them to make an aquisition test to get it back, failing that, they'd need to take one of the 2 reasonable outcomes, either suck -5 profit factor from stretching their resources or lose the item in question until their profit factor goes back up.

As for the party itself, wow... the advisors are brilliant, kill the sibling with a spine and control the weak willed one for their own benefit. This is actually one of those cases where I hope the crew mutinies, y'know why? because she's a terrible captain for the setting! The fact that her crew questions her orders at all is evidence that she doesn't have what it takes to lead in the Imperium. Note, there is nothing wrong with her using her crew as cannon fodder. The setting more than supports it and on even the smaller warships there are hundreds of people who are literal fuel for the ship to move, worked to near death by slavelike terrible conditions. The Imperium is a fuedal system, and when the Lord of the land says, get off your butts, grab your pitchforks we're going to war, that is the price you pay because that is the way the system is set up, even more so for "armsmen." Hey, you guys get to be cannon fodder, months upon months of NOT having to slave your butts off doing the really REALLY bad work, the right to carry a weapon, the fact you have any armor at all, etc means you get to put it to use in the plan that your captain sees fit, and you'll thank the God-Emperor for the opportunity.

Thanks lad and ladies for all your comments by the way. I like creating a live forum.

On the CP thing, personally I haven't messed with it too much. My players steer away from the warp stuff. They fear it. However, I plan to give my Navigator player a Xeno artifact of the Yu'vath that will give a few CP. I'll probably create another post of my Yu'vath description if anyones interested? BUT CP system is like the Endeavors system. Both are kinda open to interpretation. In my game I don't use the Endeavors system. Just missions and jobs. If the plays do them they gain PF depending on what I see fit. I don't need a system for that. You see in a good Rogue Trader game (my own point of view) is only good if the Rogue Trader has to work hard for every penny and strive from the low depths of to be great. Yes they own a gigantic vessel and thousands of crew. But they don't have a huge fleet like other RT and their treasury is full of IOUs and dust. Rough and Tumble and grim future of 40k.

About my Rogue Trader. Yeah she is horrible and her council did trick her and basically steal her throne in a sense. However, I think now that I had one of her ships mutiny and run off. She has got the point. No one respects her expect a rare few that actually only respect her because they respected her late father. They don't wish to see her stupidity bring down the whole dynasty. Now she sits on her flag ship and basically is second to the Captain who was her fathers best friend of sorts. Everyone respects the Captain for he is a good Imperial to the letter. Also the flag ship has a Imperial Shrine on it so the crew are all God- Emperor fearing men and women. The Captain of her remaining ship held a tribunal for the death of the Rogue Trader son and the other foul acts that had happened in my late games. The Tribunal set one PC to have his brain wiped and left to a penal colony. The Rogue Trader and a few of her council were left with corporal punishment. The corporal punishment was so bad that a few of the players had to burn fate not to die (10 lashes from a Mono-GroxWhip and see how well your players do. Note: Allow the punisher to not use his Strength Bonus and to not roll extra damage on a roll of 10. Taking both of those away allows the PC's a chance). I hope that this wake up call will show my RT that she needs to step it up. I'll keep you all posted.