#mast  a vertical spar for supporting sails
  supertype:  #spar  a stout rounded pole of wood or metal used to support rigging
  subtype:  #foremast  #jiggermast  #jury_mast  #mainmast  #mizzenmast  #topmast
  part:  #masthead
  part of:  #sailing_vessel__sailingvessel__sailing_ship__sailingship  a vessel that is powered by the wind; often having several masts

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