The Glenn L. Martin Wind Tunnel (GLMWT) has developed specialized investigative techniques to evaluate underwater appendages for sailing yachts that have been continuously improved through practice by GLMWT staff. These specialized techniques are required to obtain the best possible differential evaluation of appendage designs that commonly have differences in drag of a fraction of 1percent. The general methods of study will be described and a representative set of results is presented, which highlights that the minimum drag appendage solution is not necessarily the optimal set of appendages for an America’s Cup yacht.

This content is only available via PDF.
You can access this article if you purchase or spend a download.