This is completely wrong. The waters boats sail on are not law-free and you don't have the right to do whatever you want in them. There's a society of boaters u

This is completely wrong. The waters boats sail on are not law-free and you don't have the right to do whatever you want in them. There's a society of boaters using them and as such everyone has to abide to social contracts in the form of rules for the benefit of everyone. Sean has the "right" ( ethically) to do whatever he wants, everyone else has the "right"( again, ethically) to take his boat and chop it up to pieces. But instead of that we have specific rules to dictate that.