Reader hd passes on a link about shipping container homes from Urban Space Management, a group of builders in London who are building entire communities, schools, and farmer’s markets using old freight containers:
Some projects for establishing ocean communities are investigated and then given up for several reasons. One of them is the Mobile Offshore Base (M.O.B.) concept by U.S. Navy. It was considered technically possible, but too expensive. Nevertheless, working on the idea, we have developed a proposal for a seastead based on several barges moored between them.
Summary and conclusions: