The floating shell structure will be for "housing" purpose. It will replace the "ship" as working platform.
The "gardening" must work in the ocean in the sense of "aquaculture" - the community will produce "seafood". If we do meat and crop in floating structures it will be "cultivating cells" , hydrophonics and similar.
I agreee that a couple of small seasteads can live on tourism and ship/yacht services - but probably not a larger development. Aquaculture, Mining, Energy (wave, wind, geothermal) are things that can create more permanent settlements due to their "high business volume" capacity.
Tourism is already attended (cruseships beach condos), fishing is in free fall towards no future, so there must be something new and sustainable that has a "future" and where living on the ocean is a advantage not a draw back.
Most important anything we will IMPLEMENT on large scale in the next 50 years must be "invented" and "somehow solved and out there" already today.
Just remember internet - connected computers are around since the dawn of DOS - internet is just the massification of a "long invented thing" on "larger scale". Somehow large scale implementation has a quality of its own. The core of seasteading is "large scale implementation" of existing "waterfront development". So making just another "glorified cruiseship condo" will not lead us anywhere. Social relevant developments are the massive implementation of techniques invented 50 years ago - this is kind of a general rule.
Lets just accept for a moment the "theory" that "flat concrete shell raft solitions" can be developed into being the most economic housing solution on the planet. We create a opportunity for tousands of "non filthy rich people" to float out and look for a living and fortune on the oceans.
It will not be a problem in the sense of "space available" - but given the fact that the open ocean is mostly a productive desert - we need to develop some kind of sustainable living base or things will not work. The society segment that is living on the ocean for the moment (super yacht owners) draw their living from their "swiss bank accounts" - this is not possible for the "seasteading mainstream".
Gardening the ocean desert to feed a growing population might be a solution - i think we will have to step away a bit from the concept of acres/head as it is handled for agriculture.
Is there a estimate of the "possible sustainable food production of the oceans" ?
Aquaculture at large scale in protected coastal waters seems to create some problems maybe moving the business to the high seas is the only viable solution.
Once on the ocean attending a submerged fish industry - giant surface flat floats - or submerged concrete shell structures may be the ideal live aboard solution suitable for doing the job.
Living on the ocean is already happening - superyacht owners do it. Fact is, it is a very small and very exclusive segment of society, that has near to cero impact.
It was also discussed on other threads that using concrete shell structures we can lower the cost of a "floating live aboard homes" to average European and US city housing prices - doing it much more economic than traditional YACHT industry.
Exploiting the benefits of concrete shell mass production we could make living on the water (including the open sea) the cheapest available housing solution on the planet - problem is:
If we give a floating concrete shell platform to the poor people and enable them to live aboard go offshore and live relative comfortable for only 3000 USD on a 6m diameter float that is not a "yacht" but still much better than a wooden hut in a cramped settlement - a option that has not existed yet - will we create a overfishing problem? Is there a way to develop sustainable aquaculture solutions.
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