The Collaborative International Dictionary of English v.0.48:

Navigate \Nav"i*gate\, v. i. [imp. & p. p. Navigated; p. pr. &
   vb. n. Navigating.] [L. navigatus, p. p. of navigare, v.t.
   & i.; navis ship + agere to move, direct. See Nave, and
   Agent.]
   1. To journey 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.
      [1913 Webster]

            The Phenicians navigated to the extremities of the
            Western Ocean.                        --Arbuthnot.
      [1913 Webster]

   2. To direct or operate a vehicle, especially a ship or
      aircraft.
      [PJC]

   3. To pass through, over, or around; -- used especially of a
      course having obstacles; as, to navigate around all the
      randomly scattered tables to the far side of the room.
      [PJC]