Okay, still sounds crazy? Well, the concept is not as far fetched as it may seem, and there are existing real world examples. The idea of "seasteading," creating permanent, politically-independent dwellings at sea, is an old one and based on the international legal principle that, outside of the exclusive economic zone (generally extending a set distance from the terrestrial borders of a country), the international waters or "high seas" are not subject to the laws of any nation except for the home flag of the ship in those waters. If the ship or dwelling does not fly the flag of a recognized nation, then technically it is not under any national jurisdiction if it remains in the high seas. So if you drop anchor in the right spot and have the means, you can begin your own society.