In reply to Billy ...
Thanks for taking a look at the article, and for your comments on both sides ...
As a civilization advances, everyone becomes more wealthy. We have reached the point where almost everyone who can hold a job can own (or rent) a machine that would have cost billions of dollars just 100 years ago, if it could have been built at all.
The current price of a growtainer is considered modest to owners of restaurants or grocery stores.
The consumption of water is substantially less than consumption by open field agriculture.
Your suggestion of locating growtainers near naturally occurring sources of energy is right on!
For anyone interested in expansion of human habitation to the ocean, there is an abundance of publicly available information, including web sites, books, articles and (ultimately) the people behind them.
Some years ago, an author proposed expansion of habitation out into the ocean as a prelude to expansion into space.
While the problems to be solved are significant, they pale compared to the problems to be solved for habitation away from Earth.
It appears that the ideal location to begin building floating habitats is at the equator, because storms begin there as trade winds, and gather strength as they head North and South.
There is a 100 year old technology called OTEC (https://en.wikipedia.org/wiki/Ocean_the ... conversion
This is a very inefficient process that has never-the-less, received significant investment over the decades. A modern version (not yet implemented) would substitute photons and electrons for the movement of massive amounts of water. At the time OTEC was invented, quantum physics had not yet been discovered, so the only working fluid available was massive molecules of water.
The model for a (modern) OTEC system already exists in the form of land based systems: (https://en.wikipedia.org/wiki/Ivanpah_S ... r_Facility
If the Ivanpah system were implemented at the equator, and the photons from the mirrors directed down a shaft to the cool ocean depths, then heat energy conversion efficiency on the order of 80% is possible.
A side benefit of such a system is that the water heated at the boiler location far below the mirror platform would cause the nutrient rich ocean water to rise along the vertical structure, which would lead to development of a robust aquaculture as well.
May every member of The Knowledge forum grow financially, intellectually, socially and beyond.