Reply To: admiral doty
[quote=admiral doty]
[quote=ellmer]
[quote=admiral doty]
Ocean Farms has put a lot of design into their mooring systems ...
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The mooring sistem looks like a version of the "tendon concept" (frequently seen in Oil/Gas platforms). Where a floating device (buoy, spar) holds a tendon under tension.
This concept was suggested for mooring of floating breakwaters, floating tunnels... if the tendon is a buoyant polypropylen line, the sistem can work in depths[/quote]
Yes, it is similar to a tension leg platform, but designed for the cables to go sideways to the submerged sphere, allow the cables to spin with the sphere, and allow the shere to move vertically to different depths or surface. The neutrally bouyant tendon/anchor line is a clever idea so the line doesn't need to support its own weight.
The tension leg was originally my preferred mooring system for a seastead city. An array of these connected in a spaceframe or tensegrity truss, with submerged floats and second set of floats at the surface for wave power generation would support a city above the maximum wave height.
Then, later it seemed preferable to have a more mobile, megaship based plan. I had thought of a fleet of permanently moving ships going in a circle along the coasts, with modular housing using shipping containers, light industrial for onboard manufacturing, and port facility on the stern for ferrying cargo, living units, and people to and from shore. There can also be land based habitats where the shipping container units can stay until they are ready go back to a ship to live and move on. Also, the megaships would have a modular design so they could expand while travelling and split into two ships, multiplying like cells.
When I was a teenager, I use to dream of living in an underwater city and travelling in a live-aboard sub like Captain Nemo, but then caught the space bug. Thanks, Wil, for showing that living in an underwater city or mobile sub can be feasible after all.
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They certainly have quite a bit in common. The engineering for deep water habitats and Venus surface structures are virtually identical:
[quote]The atmospheric mass is 93 times that of Earth's atmosphere while the pressure at the planet's surface is about 92 times that at Earth's surface—a pressure equivalent to that at a depth of nearly 1 kilometer under Earth's oceans.[/quote]
source:
http://en.wikipedia.org/wiki/Venus#Atmosphere_and_climate
The two go hand in hand in my opinion.