One of the topics that I've not come across at the forums is that of Venice (Italy), which is a city not too far as a concept from a floating one, and I think there are many lessons seasteaders can learn from Venice.
For one, Venice provides many examples of how logistics for everyday living can function in a seastead.
In Venice, for example, the sanitary sewage is pumped from the storage within each building to sewage barges, then shipped to locations within the mainland.Fresh food is brought from the mainland to the many outdoor markets as well as grocery stores on a daily basis, and people tour the different parts of the city on public water buses, private boats, or simply by walking if there is a non-water route available.
The way in which the Venice lagoon is naturally constructed to lessen the seawaves and windy conditions, may also provide a blueprint for constructing buildings and wave-dampening constructs on the open sea.
I also think people in Venice are very happy living so close to the water, there is something to that element that draws people, which is probably why waterfront lots are so expensive. I just saw today a video of one very happy family living next to the Grande Canale in Venice:
Patri (Friedman) mentions in his speeches the seasteading communities as sort of a scientific method, to find out which ways of organizing a community perhaps work. But looking back at how Venice prospered during its independency, may also help in shortening the learning curve to running some of the successful seasteads for potential entrepreneurs.
As an example of those historical lessons, Venice provided a natural, easily defendable fortress in the sea, keeping the area out of the way of looters and providing a place of refuge for free-thinkers and gifted people who needed an un-judging environment.
Those are just first few examples that I could think of as lessons from Venice, I'm currently planning a trip to (once more) experience the city early next year.
In fact venice is a excellent example how seasteading can work. From the water and merchant oriented business model to political and intellectual freedom, as base to attract brilliant minds, even its todays business cooperating with cruise ships, tourism income, Palm Dubai is in certain way a intent to build a modern Venice in the Desert.
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From my expected seasteading axes the plate float out, the real estate squarementer deal, the bubble hotel, and Breakwater lagoon marina could be elements that can be developed into a city state compareable to Venice.
Venice also offers a great lession what to avoid. The city is built on wooden pilots that slowly sink into the swampy lagoon - if you build real estate on the water make sure that the floating foundations can last centuries this is of essence.
By the way study the historic maritime powers can give a lot of important info on seasteading - i would also suggest to look at Cartatago (lent its name to Cartagena)
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