seasteading
The creation of permanent dwellings at sea, especially outside the territory claimed by any national government.
uncountable
The territorial sea offers a new realm for individual and small business enterprises. The Commission recommends an experimental program to encourage new uses of the ocean through State leases of submarine areas within U.S. territorial waters. Such a program might be called "seasteading."
Where it comes from
Blend of sea + homesteading, coined in a 1969 United States commission report (see quotations).
Adapted from the Wiktionary entry seasteading (CC BY-SA 4.0).