Its possible the Starfort were used for terraforming the landscape around them. It seems they have hydraulic properties used to make the Sluises run..JD,
I wonder how the Dutch drew all those overhead topography maps with such detail. It looks like they had access to the air. (?)
The Dutch star fort chain defenses seem effective militarily, but I think originally that fort chain provided a shit-ton of electromagnetic power for canal-rich Antwerp. Running water is electromagnetic.
Still, they made dandy forts and pontoon bridgeheads when needed.
My analogy: The forts remind me of when certain industrious people take old airliners and make them into unusual homes. Not their original high-tech function, but a great sealed and dry environment in which to live. Animal and pest-proof. Imagine if all of us on this forum were kids, wouldn't we have a lot of fun making an old airliner in the woods a "fort"? Then play cowboys and Indians? I think that's what has happened in our history. We children "play" in the ruins of the past, oblivious of their importance, function, and grandeur.
Star forts were sturdy, high tech, and superbly well-made, thus they could easily be pressed into multi-use roles.
On how they drew starfort with such accuracy. DaVinci drew a map of Imola for Cesare Borgia, when he was invading it. Its said that he went around every corner in the town measuring with his feet.They say it is still accurate.. Air-balloons is also a possibility. Arcimedes is supposed to use one when Syracuse was under siege.. That is BC..