Wiktionary
unnavigated
a. That has not been navigated; unexplored.
Usage examples of "unnavigated".
I have so often camped, that the scent of orange-blossom always brings back to me the dense primeval woods, the silent plains, the quiet Indians, and the unnavigated waterways, in which the alligators basked.
The essential feature of these voyages was that they were random, unnavigated ones.
The view that the Polynesians settled their distant islands at the time they discovered them by unnavigated one-way voyages is both simple and realistic.