U.S. patent # 8,739,720

  • can set balanced sail with single spar
  • sickle shape offers balanced rotation
  • utilizes swept-back, efficient, aerodynamic cross sections
  • can present self-rotating curvature along full length of mast in airflow
  • not a conventional wing rig so does not misbehave at anchor (can be turned off quickly and completely!)
  • stores well along gunwale of average boat
  • looks cool to art majors and bird lovers

Contact the inventor by e-mail at: This email address is being protected from spambots. You need JavaScript enabled to view it.

You have no rights to post comments