#sail__canvas__canvass__sheet  a large piece of fabric (as canvas) by means of which wind is used to propel a sailing vessel
  supertype:  #piece_of_cloth__piece_of_material  a piece of fabric
  part of:  #sailing_vessel
  subtype:  #balloon_sail__balloonsail  any light loose sail
  subtype:  #crossjack__mizzencourse  the lowermost sail on a mizzenmast
  subtype:  #fore-and-aft_sail  any sail not set on a yard and whose normal position is in a fore-and-aft direction
     subtype:  #gaffsail__gaff-headed_sail  a quadrilateral fore-and-aft sail suspended from a gaff
     subtype:  #gaff_topsail__fore-and-aft_topsail  a triangular fore-and-aft sail with its foot along the gaff and its luff on the topmast
     subtype:  #jib  any triangular fore-and-aft sail (set forward of the foremast)
        subtype:  #flying_jib  the outermost of two or more jibs
     subtype:  #lateen_sail__lateen  a triangular fore-and-aft sail used especially in the Mediterranean
     subtype:  #lugsail__lug  a sail with four corners that is hoisted from a yard that is oblique to the mast
     subtype:  #mizzen__mizen  fore-and-aft sail set on the mizzenmast
     subtype:  #spanker  a fore-and-aft sail set on the aftermost lower mast (usually the mizzenmast) of a vessel
     subtype:  #spritsail  a fore-and-aft sail extended by a sprit
     subtype:  #staysail  a fore-and-aft sail set on a stay (as between two masts)
  subtype:  #foresail  the lowest sail on the foremast of a square-rigged vessel
  subtype:  #headsail  any sail set forward of the foremast of a vessel
     subtype:  #spinnaker  large and usually triangular headsail; carried by a yacht as a headsail when running before the wind
  subtype:  #mainsail  the lowermost sail on the mainmast
     subtype:  #main_course  a square mainsail
  subtype:  #main-topsail  a topsail set on the mainmast
  subtype:  #press_of_sail__press_of_canvas  the greatest amount of sail that a ship can carry safely
  subtype:  #royal  a sail set next above the topgallant on a royal mast
  subtype:  #save-all.sail__saveall  a sail set to catch wind spilled from a larger sail
  subtype:  #skysail  the sail above the royal on a square-rigger
  subtype:  #square_sail  a four-sided sail set beneath a horizontal yard suspended at the middle from a mast
  subtype:  #topgallant_sail__topgallantsail__topgallant  a sail set on a yard of a topgallant mast
  subtype:  #topsail  a sail (or either of a pair of sails) immediately above the lowermost sail of a mast and supported by a topmast
     subtype:  #fore-topsail  the topsail on a foremast

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