This may be crazy, but I was thinking of taking my Phantom on vacation with me, part of which is on a cruise ship. I was thinking of taking videos (when in harbor or anchored) of the various port destinations, assuming I could get the permission of the captain. I was trying to anticipate the potential problems. For example would the huge metal boat structure screw up the compass so badly that it wouldn't work. Other problems? I do not have a lot of experience with the Phantom yet. Thanks for your advice.