Seastead
A seastead is a structure which is safe to live on in international waters. Since the focus is just living on the water, and not getting anywhere quickly or carrying lots of cargo, a seastead design can sacrifice speed through the water and cargo capacity to achieve lower costs per square foot and greater stability than a boat/yacht/ship of similar price.
There are several different lines of thinking about what seasteads should look like and the best strategies to get them built. The main ones are:
