Seastead 

sea-stead
see-sted

-noun
1. A floating artificial structure designed to accommodate permanent residents on the ocean

Seasteads need to be seaworthy.

Seastead by decentralism May 24, 2011

Seastead 

-Verb
To leave a land-based nation and move to an artificial land mass on the ocean

They wish to seastead the Caribbean.

Seastead by decentralism May 24, 2011

seasteader 

seasteader
see-sted-er

-noun
1. Those who live on a seastead, or who desire to live on a seastead

The seasteaders are making plans to create artificial islands on the ocean.

seasteader by decentralism May 24, 2011

seasteading 

sea-steading
see-sted-ing

-noun
An act or instance of establishing a seastead

It is possible that there will be seasteading all around the world.

seasteading by decentralism May 24, 2011