I had been pulled up for flying near a refuelling depot at our local Port a few weeks before a Cruise Liner stopped in for the night , I ended up talking with the Port security , he told me a story of how someone had been flying a drone that was right in front of the Captains windscreen and also how the drone was basically flying around the deck.
So I talked to him about the rules regarding drones and ships , he was pretty good with me considering and even wanted a copy of the footage I took on the day.