The sailors have had a long, hard voyage. Their shipmates have succumbed to sickness, sea monsters, and savages along the way. There are just enough of them left to keep sailing – and they do, for the cargo in their hold will make them all wealthy. As the sun burns the mists away from the sea-cliffs, they catch a glimpse of your isle.
Do they find civilizations to trade with? Do they find a deserted island with naught but trees and animals? Do they find a remote home of horrors, full of monsters that devour passers-by? Do they find pirates and conquerors, or artists and merchants?
Only you can decide.