Seastead

A seastead is a structure which is safe to live on in international waters, outside the jurisdiction of existing countries. 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 on what seasteads should look like and strategies to get to real seasteads. The main ones seem to be:

Vision/Why/Strategy	Example	Example	Example
Single Family Seastead	Tension Circle House	Geodesic Vessel	WaterWalker
Breakwater Seastead	Tension Circle Marina
Floating City Seastead, High Road	Clubstead	Ocean Ranger	Freedom Ship
Cruise Ship Seastead	Residensea The World	ORCA
Basestead, Outposts	Basestead Belize
Why Ephemerisle Matters	Ephemerisle