Take what Joshua Slocum had taken on his voyage around the world.
One boat, some clothing & foulies, and enough food for port to port transits.
A sextant and pubs. along with charts & sailing directions.
No fancy electronic gagets, Nope none what so ever. Do you know why?
A "Sextent" was both a basic, and a required tool of the "early" days, but the skills to operate one, along with an accurate timepiece, were the electronic gagets of the day.
Don't know bout you, but I'd hate to cross an ocean without something like that........
I DO know that I'd run out of food long before I reached my desired location, or any piece of land period, with my luck, if all I had was a sextent.
Thank god for fancy electronic gagets.