What is the the meaning of navigable?
To joirney by water; to go in a vessel or ship; to perform the duties of a navigator; to use the waters as a highway or channel for commerce or communication; to sail.,
To pass over in ships; to sail over or on; as, to navigate the Atlantic.,
To steer, direct, or manage in sailing; to conduct (ships) upon the water by the art or skill of seamen; as, to navigate a ship.