Re: Different Gun Question
There is nothing inherently dangerous about a gun. What's dangerous are people. I was raised hunting, trained in the military in the Vietnam era with weapons including light and heavy weapons, later as a policeman, then again in another military service. I now carry a concealed weapons permit. So my having a weapon on me including on board or anywhere else is not dangerous for anyone but a bad guy. Why anyone would refuse to sail with someone trained in the use of firearms is something I'd respect but not understand.
If your country allows you the legal right to own a firearm then you are entitled to have it on board. If in the water of a state then you must adhere to their laws. Not all states reciprocate with another. It's your responsibility to know which do. Most countries in their waters only require specific conditions for you to legally have the weapon in their waters which may include lock and key or temporary relinquishing of your weapon on declaration.
Having an unloaded weapon is not generally a good idea unless necessary for safety on the firing line, inspection, handling by another, in an area required by law, etc. There is little benefit otherwise to have a weapon for use not locked and loaded excluding a few instances. I won't own a gun without a safety so have never had a Glock although if on active duty that would be my choice. There is no danger when a weapon is on safe to not have your finger in the trigger guard. Generally you release the safety with the thumb of the hand on the grip. You should know if a round is chambered and if the gun is on safe or not. You should understand when it may be necessary to unsafe the weapon and when you may fire in defense of life or grave bodily injury to yourself or another whether stand your ground or the castle doctrine.
Anyone not trained elsewhere should have safety training as well as learn to fire their weapon accurately and safely. You should be able to unholster your weapon and fire accurately and quickly.
If not carrying then the weapon needs to be secured safely esp if there are children on board. Depending on their ages then the weapon should be locked away or have a trigger guard. Safety, safety, safety.