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Caution: posts may contain poetic exaggeration, unapproved memes and general silliness. Full Member of the #Capybara Appreciation Society. Unabashed fanboi of kycnot.me. Anarchist. Dad. Interests: #FOSS #machinelearning #tor #brewing #python #anarchy #diy #solar #electronics #decentralisation #linux #bitcoin #monero #offgrid #rightToRepair #progressivemetal #speculativefiction #archeology #space #memes I believe everybody has a right to defend themselves against #Netanyahu, #Gollant and other fascist war-criminals. Not just a right, but a duty; and most of us are not doing our share.

Building materials for seasteads

The high seas are (theoretically) open and free, but come with many construction challenges. Waves and winds should be familiar to all of us. I'm going to talk about construction materials options in the presence of the unholy trinity of biofouling, chloride corrosion, and UV.

Aluminium. Lightweight, inexpensive, easily recycled, handles UV well. Moderate difficulty to work and to repair. No particular resistance to biofouling if left in contact with water, but is not vulnerable to burrowing. Is destroyed very quickly by chloride corrosion. Not a practical option unless you are in a low-chloride environment like the Great Lakes of North America.

Cupronickel (including gunmetal, admiralty brass and similar). Moderately easily worked and recycled. Heavy. Invulnerable to UV. Extreme resistance to biofouling (toxic to invertebrates but not mammals or plants). Decent strength in tension compression and shear. Decent creep resistance. Horribly expensive. Resistant but not immune to chloride attack - no crevice corrosion or pitting, but sheds material very slowly across its entire surface. Combined with its cost this is like watching banknotes blow over the side. Can be practical for piping and similar when too small or inaccessible for inspection and maintainence.

Polymers (plastics). Lightweight, inexpensive. Uniquely vulnerable to UV, this can be managed with coatings, free-radical stabilisers and UV-absorbent fillers such as titanium dioxide. Mostly low strength, lower stiffness and no creep resistance unless reinforced with glass fibre, carbon fibre, or metal fibre. Easily recycled... unless you add fillers or reinforcement: you need both. Good resistance to biofouling. Essentially immune to chloride attack (though metal fittings and reinforcement might be vulnerable). Cheap and practical to build, moderately easy to repair, impossible to recycle.

Steel, coated. Very easily worked and repaired, moderately easily recycled. Cheap. Moderately heavy. Immune to UV. Coating can provide good resistance to biofouling. Excellent strength in tension, compression and shear. Excellent creep resistance. Quite vulnerable to chloride corrosion and related sulphate corrosion, can be managed with constant inspection and maintainance. Best option for working boats / infrastructure that expect to be damaged and repaired almost constantly.

Steel, stainless 316. Easily worked and repaired, moderately easily recycled. Expensive. Moderately heavy. Immune to UV, highly resistant to biofouling, more so if coated. Excellent strength in tension, compression and shear. Excellent creep resistance. Resistant to chloride and sulphate corrosion, doubly so if coated. This is not true of the cheaper 304 stainless and similar. Best all-rounder if you can afford it.

Your thoughts? Other options I may have overlooked?

Replying to Avatar Luke

What's on your roof?

Rooftop real estate is going to be much more valuable on a seastead. Depending on which 'public' utilities are offered to the community, your roof will likely have one or more of the following options on it:

Sun Deck:

Some may simply want more square footage to stand on, such as a sun deck, like we saw on the first seastead in Thailand circa 2019. A nearly free option, this would require building your roof to support as much weight as your floor.

Personal Garden:

Like a Sun Deck, a year-round garden would make an excellent rooftop addition but would not be cheap to install. It would need a walkpath around it, a drainage system so it doesn't get washed away every downpour, and as much or even more floor bracing than the sundeck did to hold up the weight of all that soil and water.

Storage Shed:

Pack rats may opt to simply throw a storage shed up there, not unlike the $300 backyard barns you can buy at your local hardware store today. Again, roof bracing needs to hold it's weight.

Solar Power Generation:

Solar panels would be a major, common choice for most, because decentralized energy, even if available only half the time, is free after the cost of the panels. Batteries like Tesla's power wall would be ideal for keeping a home powered 24-7 from such panels if no central power options were offered. That does come at a pretty expense, however.

Freshwater Gathering:

The most cheap option is likely a simple rain cachement tray over your homestead, which decentralizes your fresh water source making that nearly free. Of course the H2O has to be stored somewhere, so anyone deploying a rain cachement roof will have to include a large water tank at least 1 floor beneath it. (Sucking up more real estate footage.)

Wind Power Generation:

If a seastead sees near-constant wind, a few small vertical poles could hold up windmills. One on each corner of the dwelling, in fact, perhaps more. While this isn't a cheap option it can be combined with any of the above options, because these windmills will sit higher up, on poles.

So which will it be?

Your own roof will likely be the same as every other roof around you for one good reason: The availability of lower-cost services on your seastead. If there were no cheap power or water options available, then most seasteaders would need to both cache rain and generate power upstairs, which would most likely be the rain cachement tray with a few windmills. Since rainwater is very clear, I could see a cachement tray made with solar panels at the bottom of it as well.

If your community supplies cheap power but not water, then everyone would have to do cachement but might reserve up to half the room for gardening or storage.

If your community supplies desalinated water but no central power, then few would use any cachement (again, takes up room downstairs) but everyone would likely have both solar panels and wind turbines vying for space up there.

Only if your seastead offers both, would a variety of choices prevail, giving people the option to use the space how they see fit. This would make the seastead far more interesting & able to be personalized.

Covers all main points, thanks for sharing, Luke!

One point I'd like to elaborate.

Salt-spray.

Any garden plants need to be tolerant of salt-laden spray, even if otherwise well provided with rainwater. This limits you to hardy halophytes (salicornia, sea celery, warrigal greens etc) or requires an enclosed greenhouse able to survive gale-force winds.

Fresh water is also certain to come with a dusting of salt spray. In a high-rainfall climate this would hardly be noticeable, but in drier climates it may leave rainwater non-potable. Mechanical diverters will be confused by wave action, so probably requires electronic sensors, or electrodialysis of the captured rainwater (much less energy intensive than desalination, but still another complex system to depend on).

Photovoltaic panels do not appreciate spray either. Dry salt deposits are broad-spectrum reflectors of sunlight, so even a modest salt build up on the panel will significantly degrade it. Regular cleaning a necessity in periods without daily rain, and this requires designing for safe and easy access to the panels.

The chloride content will also disrupt the surface anodisation of anything aluminium, need to use more expensive 316 stainless on anything exposed to spray.

#Bitcoin is still the better dystopia!

At least in 2035 with BTC I'd be able to choose which bread I would prefer.

In that 2035 with a digital fiat currency I might be only able to buy breads sold by affiliates of my employer, and only when people of my (low) Social Credit Score are allowed to shop.

After COVID here, this doesn't seem unlikely at all...

Don't give up on carbon-based so easily - we have a solid lock on self-replication technology, and we're so cheap!

Develop your neural network in carbon over decades, then later "distil" its outputs into silicon-on-insulator for the long haul. We already have the technologies for that, we just don't call them by the right names.

What we don't have and should develop is the "technological toolkit" to colonise icy objects outside habitable zones. Probably needs to be fission-based since we cant seem to make fusion work. Building a society inside a KBO and putting it into an extrasolar trajectory is our only hope of teaching other stars without new physics.

Have a plan to join the raiders!

Learn simple phrases in likely raider languages. Make friends with people with ties to likely raiders. Know where local political leaders live, and know their faces so you can be the first to turn them in!

Your government fears and hates you, and would happily sell you as dog food if they could find a way to do so profitably while continuing to collect taxes from your estate. So when the time comes, sell them out first before they can flee!

Believe it or not, but I 100% agree with what you wrote there.

As I've written elsewhere, the three most valuable features of any financial system are adoption, adoption and adoption.

#bitcoin has it.

99.99% of #altcoins don't, they are purely speculative in their uses.

#monero (XMR) is the exception that proves the rule. Its value proposition is the ring signature - every transaction is a mixer. That's why its not listed on KYC exchanges, but is often the only currency accepted on many darknet markets.

#monero's economy, other than mining, is almost entirely whores, poker and blow. This also describes #nevada, I hear :-p. But that is a real economy, and why its also why its extraordinarily stable for an #altcoin - its a medium of exchange more than a speculative asset.

#bitcoin is my #1, and ~90% of my holdings.

#monero is #2, and about 10%.

The others, yeah #shitcoin is not an unfair descriptor, but if I find another gaining real world adoption I'll look at buying it.

Totally agree, atyh. A problem frequently observed, but rarely circumvented.

Building alternatives so that the enemy's strategy for holding power collapses without a shot is what we should all work towards!

"Hence to fight and conquer in all your battles is not supreme excellence; supreme excellence consists in breaking the enemy's resistance without fighting."

https://suntzusaid.com/book/3

Re efficiency, yes, 100%. But the value of a financial network rests on three things: adoption, adoption, and adoption. Bitcoin has it, and weird hacks to bolt on new features are easier than building widespread adoption of an altcoin.

Re organisations, yes 100%, but there are valid corner cases like trust-less futures contracts that are now somewhat possible. A widely trusted oracle on local weather could feed into a self-executing contract that either pays out or does not pay out based on events, allowing Weed Farmer Ted to securely stay in business during a drought, even if he has to pay some of his profits to counterparties if instead its a good year. No lawyers required, and no vampire middlemen.

True.

And they don't need to be organised like some textbook Organisational Behaviour case study.

They only need to be more organised than the masses.

They can backstab, cheat, sleep on the job, and do bowls of cocaine and still keep power as long as the masses are kept distracted and divided.

Oracles. And self-executing contracts. Very simple ones, anyway.

Not for everyone, and not for every day, but they unlock new methods for cooperative, trust-less organisation.

#Bitcoiners can make them now!

ETH had them from the beginning (but #ETH can DIAF, as can any #altcoin without an algorithmic scarcity).

Bitcoin is not a jealous goddess. She's always my #1, and my benchmark, but that doesnt stop me holding some #altcoins.

Portfolio Effect.

Its #polyamoury for your financial future.

There is - if they undercut a German.

In the English-speaking world our leaders like to talk about creating "wage restraint". I'm sure German has a similar expression. I'm also sure the CDU have promised it to major donors to console them in difficult (self-inflicted) economic times.

Disclaimer: an old friend of mine is the daughter of an SPD MP. She insists they'll never ally with CDU, but she's a primary school teacher and usually wrong about everything. I bet the SPD and CDU ally rather than speak to AFD. Sorry :-p

Hahaha watch this space. CDU will cut a deal with SPD, you're going to get more migrants but they'll have to work. And they will.