Patrick J. Bray, Naval Architect has given a presentation at the SuperYacht Symposium 2006 SNAME Maritime Technology Conference & Expo for Super Fuel Efficient Long Range Motoryachts. Download an Acrobat PDF file for the 
Full Report.
Abstract:
With the continually rising cost of fuel, the demand for more fuel-efficient vessels seems only logical. This paper outlines the author’s significant gains in this area over 14 years of research and development in appendage design with application to long-range displacement and semi-displacement vessels.
I look forward to answering any questions you may have regarding this report.
Warmest regards,John DeCaro