Wharram Wingsail rig conversion for Raka, Tangaroa MkI or Tangaroa MkIV (Single mast sloop rig). Sloop rig sail plan, including construction of spars and rigging details.
First designed in the early 1980s for the Tiki 21, the unique Wharram Wingsail Rig is a simple, aerodynamically clean sail rig. It is now available for use on all Wharram designs as a sloop, or schooner rig. This article gives all the details of what makes it work.