seasteading

thumb|upright=1.3|Rendering of András Győrfi's "The Swimming City", a modular island

Seasteading is the creation of permanent dwellings in international waters, so-called seasteads, that are independent of established governments. No structure on the high seas has yet been created and recognized as a sovereign state. Proposed structures have included modified cruise ships, refitted oil platforms, and custom-built floating islands.