Originally Posted by GafferMate
Years ago there was a book called "SAILING THE FARM". The first edition was wonderfully political as well as offering good information about self-sustainability aboard...the second edition was slicker, less radical (to attract a broader spectrum of readers, most likely) but still interesting. Lists of miniature vegetables to grow in hanging baskets, such as Tom Thumb tomatoes. It might still be available somewhere...
Yep, I read the book too. Probably the later edition. But anyway, he talks about "Seasteading", which would likely be a good header to use for Googling on the topic/idea.
Also, I have no idea how things turned out, but years back, a guy (plus a last minute add on S.O., or wife) set out to spend 1,000 days at sea. Sans landfalls or resupplies. So I'd imagine that they had the gardening on the open ocean thing figured out.
It's worth a look.
Ditto on hitting the switch on the time machine, & studying what sailors did a few hundred, or a thousand years back. Especially some of the Polynesian voyagers. As they would travel hundreds, & thousands of miles, to new islands, while transporting plants & livestock to populate their new zip codes with.