I had an extremely difficult time just getting a knife (Emerson Commander) on and off a cruise ship at the ports. Had to go through metal detectors while getting back on. First time I set it off I was told by Mr Head security guy to leave it in the room or risk confiscation. Second time (habitual knife carrier) I set off the detector and just walked into the crowd as quick as possible, thought for sure I'd get caught but didn't. Third time (don't leave home without it!) It had been raining and I had my camera wrapped in a plastic bag with the knife rubberbanded to the bottom of the camera. I then passed it through the xray machine. As i walked thru the metal detector the security guys were watching me intently, no beep!! And they didnt catch the knife in the xray either. Cruise ships are fun eh? Oh btw, I won the dart tournament too.