Before people get upset, I should say (1) I`m not a lawyer and (2) I have no personal issues with weapons on board.
- flag state laws will dictate restrictions on board the vessels
- certain nations have laws that bind their citizens to certain kinds of behaviour, regardless of what territory they are in
- the laws pertinent to the nation where you have put in will also come into play
- certain international agreements (such as non-proliferation) where the nation state has agreed to abide by the requirements of those treaties, conventions, resolutions, etc.
- personal detention, etc for the purposes of prosecution
- delay of the vessel for purposes of inspection (detention under port state control activities) if there are reasonable grounds that you are deliberately trying to bypass something
- seizure of the vessel as part of criminal proceedings in certain nations where it is determined that there was a conviction.
On the other side of the coin, Article 3 of the Universal Declaration of Human Rights indicates that all persons have the right to life, liberty and security of person. The argument of self-defence in the maintenance of those rights has been pretty much clarified down into a simple rule–that force necessary to stop the progress of the attack.
that gets into two streams. First, were there other options that a person could have taken that would have stopped the attack other than the use of a certain tool? If yes, expect some legal questions. If not, then how do you show this? If you had a proper escalation of force (presence, warning, etc) that eventually ended up with you having to use the application of deadly force (which is what guns are, after all) to stop the attack, then it would likely be a matter of self defence. On the other hand, if the use of that tool was the only option available to the individual and there was a reasonable expectation that not using the tool would result in a loss of life, etc, then escalation may be relatively quick…
don’t know if this helps or hurts the argument, but just a couple of thoughts from left field. because i’m not a lawyer (and don’t take this as legal advice), one thing that people should get used to is being able to identify the restrictions applicable to their various transits.