My Viva Vivas seastead design

(Matias Volco) #63

That’s a very good question that begets to be answered in some detail

(EK) #64

I’m curious about the polyurea use here. I like the idea overall but I’m not sure if I’m following how the polyurea will protect the steel for that long. My biggest concern is that it will just get abraded in spots due to the rubbing and shifting of the different modules. Or just in general that it can/will get scratched and lead to rapid oxidation of the steel underneath. Am I misunderstanding how the polyurea works or do you have another solution for that?

I like the idea and I think steel would be a good material to use if the rusting can be solved, I’m just not sure if this is as foolproof as it might need to be.


While I can’t speak for Chad or his design, a general solution for connecting any seasteading modules would be to just simply raft them up.

My idea was to use steel cables and vertical boat fenders.

Much heavier duty then the above one, but the same idea.

(Chad Elwartowski) #66

I’ve gone back and forth with several thoughts on this. Whether to just use industry standard bumpers or to have them sandwiched together with high powered magnets on the interior (which would allow for splitting apart during an intense wave but snap back together afterwards).

Another thought was SRI’s artificial muscle which produces electricity when pressure is applied and relieved. Though that would take a boatload of experimentation, the implications of the final results would be pretty big (power your module just from bumping into your neighbor).

Maybe Pacific Weave tires? Or just plain tires strapped on.

Yes, definitely a factor. I haven’t experimented enough with polyurea to find the best way to prevent that. There’s the hard stuff in truck beds, then I saw polyurea applied when I was in Afghanistan to the T walls and they were more rubbery. There are many different formulas out there. Again, much experimentation would be necessary.


That crossed my mind too, but the power requirements to generate such strong magnetic fields that could hold in place 1-2-5-etc. tons modules seems to be prohibitive, price wise.

And, for what? So we can just press a button in order to disconnect a module? :blush:



(Chad Elwartowski) #69

I was thinking more in line with the ability for the seastead to break apart in rogue wave situations and snap back together.
But ya, probably makes sense on a small scale but at a large scale not practical.

(Larry G) #70

“Snap back together” is a problem. Magnetic attraction is subject to cube/root curves. The closer it gets, the stronger, in a steep curve. The further away, the weaker the attraction.

So you get a tiny bit too far away and there is effectively no coupling at all. Slide it back a little closer and it snaps together so hard it’s slamming with excessive force.

That’s assuming you can get a strong enough magnet to make a difference compared to the forces of mass*acceleration on the structure.