>>1127956Solar still, Solar cooker, Shit-ton of fish hooks. Other than that, you're pretty much just looking at shelter options, which would mostly require a hull that can be scraped for barnacles regularly without falling apart and some way to navigate... so a lifetime supply of sailcloth (which doesn't last long). You'd probably want to check with a dietician before you plan for anything long-term though, because I'm sure that seafood alone won't meet your nutrient requirements; at the very least, Vit-C would be an issue.
