Pertaining to navigation.

plural of navigator

So as to permit navigation.

plural of navigability

Used other than figuratively or idiomatically: see navigable, waters.

plural of navigation channel

Practice of calculating one's position and velocity using radio signals transmitted from space satellites as reference.

(nautical) A deeper channel cut into the sea or river bed, to enable larger ships to pass through to a port.

(nautical) Navigation by using the positions of the stars and other heavenly bodies.

(nautical) The farthest point above the mouth of a river that can be navigated by ships. This term can be somewhat subjective on many streams, as this point may vary greatly with the size of the ship being contemplated for navigation. On others it is quite objective, being caused by a waterfall, dam or lock.