Source : Webster's Revised Unabridged Dictionary (1913)

   {Naval brigade}, a body of seamen or marines organized for
      military service on land.

   {Naval officer}.
   (a) An officer in the navy.
   (b) A high officer in some United States customhouses.

   {Naval tactics}, the science of managing or maneuvering
      vessels sailing in squadrons or fleets.

   Syn: Nautical; marine; maritime.

   Usage: {Naval}, {Nautical}. Naval is applied to vessels, or a
          navy, or the things which pertain to them or in which
          they participate; nautical, to seamen and the art of
          navigation. Hence we speak of a naval, as opposed to a
          military, engagement; naval equipments or stores, a
          naval triumph, a naval officer, etc., and of nautical
          pursuits or instruction, nautical calculations, a
          nautical almanac, etc.

Source : WordNet®

naval officer
     n : an officer in the navy