After reading the Navigator chapter, I still haven't figured out how to upgrade navigator powers. Under gaining navigator powers, it says you can spend XP at each rank to raise a power to the next level, but doesn't say how much it costs. in the career path for Navigators, the only thing I can find is the talent Navigator Power, which explicitly says it is for gaining new powers. I thought maybe the individual ranks count as different powers, but can't find anything to support that. Also Shrouded Houses has A Gaze to Pierce the Soul, which allows raising Gaze into the Abyss to Paragon from Master for the same cost as raising to Master. That seems to indicate a variable cost to raising ranks. My best guess is that powers are acquired and upgraded by the Navigator Power talent, and there is a typo somewhere. Can anyone clear this up?

The Random NPC said:

This is how it works as best as I can tell:

Every time you take the "Navigator Power" talent, you may do one of two things: either gain a completely new navigator power, or improve an old one. In the case of Shrouded Houses and A Gaze to Pierce the Soul , you have one more level of proficiency you can attain in it called Paragon , the level above Master. You get it much like how you improve proficiency in a navigator power normally: by taking the Navigator Power talent and then choosing to improve an existing power.

Hope this helps.

-Kirov

That's what my GM and I decided, thanks for the reply.