“Close up of the hinged foil as used in l’Hydroptere. A different concept along the same theme using hinged daggerboards has been raised in the context of the 34th America’s Cup ” l'hydroptere.ch This site and its contents are © Copyright TetraMedia Pty.Ltd. All Rights Reserved. Photographs are copyright by law, if you wish to use an image from Sail-world.com, Powerboat-world.com or Marinebusinessnews.com, Contact us. Click Here to close this window