>>1348210>Go all-over the worldMerchant ships normally just sail in between a handful of harbours. You'll be 'visiting' the same handful of countries all the time
>Visit tons of countriesIf by 'visit' you mean going from harbour to harbour and never seeing anything else
>On the water for months at a timeIn a ship so big that it's just like your in your own home, not at all /out/
>Learn survival skills/astronomyNigga.
>Far away from civilization You're going to be on a ship with 15 other people, civilization isn't going to be far.
