Thank you, both of you. I assume jgcoastie refers to coastguard? I couldn't ask for a better source than that
Re: sailing to another state, you say it would be the same as an automobile. I was hoping for a different answer. Would the same thing apply if it was an RV? For full-time RVers and boaters, I would assume it would count as your residence, and most states have a law to the tune of you can possess unregistered weapons in your residence (I think even MA has a law like this, but it is somewhat self contradicting). Is that not the case? If your residence moves into another state, I assume you're not automatically a resident of that state... interesting problem. The laws really don't account for this lifestyle.