Continuing the discussion from What defines a Seastead:
Although there have been many marine powers in human history, (Minoic, Phoenizian, Polinesian, Vikings, Venice, Spain, Portugal, England) none of them developed floating cities to create oceanic trade hubs, and control marine commerce Venice style.
This seems not to be logic in the first thought, but it becomes clear when we remember that the only availble building material for floating structures in those times was wood - a fast victim to the Teredo worm (within 16 weeks) and biofouling that made permanent floating structures a dream impossible to achive. Even with this ridicoulusly short lifespan, of somtimes just 16 weeks life expectance at sea, marine empires where built on the value and power of wooden ships.
Steelbuilding of floating structures introduced by Isambard Brunel in 1845 made floating structures a bit longer lasting - steel ships can have a maintenance free service life of some 5 years (Prelude LNG floating industrial plant) and a total service life of some 15-30 years (includes plating renewal and constant repair of fatique cracks ) until they are “structurally gone” to the point of scrap.
But this is still a “poor service life” for a floating real estate development. Real estate development requires a service life of hundereds of years (similar to land buildings).
Modern concrete floating structures can deliver the necessary service lifespan to make oceanic real estate development feasible.
/ Lens shell pictures overview / / Ramform floating home pictures / / c-shell floating home pictures / / Floating concrete building methods / / shell cluster pictures / / investor proposal list /
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