Antonyms of adj unnavigable

1 sense of unnavigable

Sense 1
unnavigable -- (incapable of being navigated)

INDIRECT (VIA impassable) -> passable -- (able to be passed or traversed or crossed; "the road is passable")

Similarity of adj unnavigable

1 sense of unnavigable

Sense 1
unnavigable -- (incapable of being navigated)
       => impassable (vs. passable), unpassable -- (incapable of being passed)