Yeah, NCL (at least) will confiscate them at the first re-entry point at their Xray stations. The embarkation team let it pass (I asked about our knives before we ever got on board). The NCL Gestapo collected every dive knife in our group upon reentry in Coz. The fact that it is a recognized safety item didn't sway them. Like I was going to use a 3" dive knife blade to hijack the ship in Cozumel and ram the Pentagon, especially when the 6" extra sharp steak knives were so readily available :sneaky: <sarcasm off>
BTW, I had extra (UK Remora) and stashed it in a small metal box for subsequent dives. That passed under their xray vision. I wouldn't be so angry about it but the Security team for the NCL Sea thought they were God's gift to mankind and no-one, certainly not their customers, had any value but to be securitied (sic) on... They wouldn't even allow them to be washed; several of my groups were quite rusted when picked up 4 days later...
If you aren't the subversive type, I would suggest several pairs of EMT Shears.
PS - The Sea was a ratty boat, small, cramped, loud (engines sounded like they were missing a few spark plugs), and hit every wave like a surf board. Nothing like a Disney or the typical Royal Caribbean ships.[/QUOTE I got onto an NCL ship with my knife in the BC pocket and realized I had it as it was going onto the ship through xray. I mentioned it, figuring if found, my bag might not make it to my cabin. They looked and said they saw nothing and I should forget about it. Then, getting back on the ship, they ran it through xray and did not find it but then proceeded to look. I asked him if I could help him and what might he be looking for. Of course he said "knife". I told him, I don't have one, they are not supposed to be on the ship and he let me go.