There appears to be a bug, where all ship captains of my fleet (including myself) level up like crazy, whenever there is a ship with seriously destroyed rigging in the fleet. Typically as a consequence of being dismasted. I assume it has something to do with the repair skill. Going into a loop of sorts. It's utterly crazy. I and all my other captains can easily gain ten or more levels this way. Edit: Jip, definetely has something to do with repair. I have a repair skill of 7 now and did nothing to warrant it being that high. I recently escorted a captain though, who got dismasted at one point. I assume combination of the quick repair skill and the "shared experience" perk could play a role.