The Collaborative International Dictionary of English v.0.48:

Sailing \Sail"ing\, n.
   1. The act of one who, or that which, sails; the motion of a
      vessel on water, impelled by wind or steam; the act of
      starting on a voyage.
      [1913 Webster]

   2. (Naut.) The art of managing a vessel; seamanship;
      navigation; as, globular sailing; oblique sailing.
      [1913 Webster]

   Note: For the several methods of sailing, see under
         Circular, Globular, Oblique, Parallel, etc.
         [1913 Webster]

   Sailing master (U. S. Navy), formerly, a warrant officer,
      ranking next below a lieutenant, whose duties were to
      navigate the vessel; and under the direction of the
      executive officer, to attend to the stowage of the hold,
      to the cables, rigging, etc. The grade was merged in that
      of master in 1862.
      [1913 Webster]

WordNet (r) 3.0 (2006):

sailing master
    n 1: the ship's officer in charge of navigation [syn: sailing
         master, navigator]