A seastead is a structure which is safe to live on in international waters. The goal is to enable dynamic geography where people can pick which legal system they are in without having to box up their stuff and change houses. Since the focus is on living on the water, not getting anywhere quickly or carrying heavy 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. The goal of seasteading is to make a community of people living on affordable seasteads.
There are several different lines of thinking about what seasteads should look like and the best strategies to get them built. The table below shows the main visions for what we should be working on to advance seasteading.
Note that the above approaches are not mutually exclusive, except in the sense that if you spend your time and money on one you don't have it to spend on another.