Catalyst Journal of the Amateur Yacht Research Society Number 21 July 2005 Catalyst Features 13 Freewing Richard Glanville 15 Moorhen Ron A Stewart 18 A Bauer String Yacht Demonstration Peter A Sharp Regulars 3 News & Views - IDEC, new proa launched, rowing record; 9 Letters - CATRI, WSSRC ratifications, Wincheetah, Broker wanted, DWFTTW 22 Notes from Toad Hill - Drawing Long-Radius Curves 24 Calendar Inside back cover John Hogg Prize Cover photo: Trimaran IDEC leaves New York on her way to a record crossing Photo: ©Billy Black/DPPI/ IDEC JULY 2005 1 Catalyst Speedweek Journal of the For many readers, this edition will be the last before Amateur Yacht Research Society the Weymouth Speedweek, which is once again sponsored by AYRS. We are hoping that this year there Editorial Team — will be many more boats entering, all intent on Simon Fishwick establishing just how well they perform, and in some Peter Westwood cases hoping to get the UK record. Nick Povey has Sheila Fishwick promised there will be lots of wind available this year. You can contact him for entry forms by email at
[email protected], or by post to the address in Specialist Correspondents Aerodynamics—Tom Speer Catalyst Calendar. Electronics—David Jolly Human & Solar Power—Theo Schmidt AYRS On-line Discussion Forum Hydrofoils—George Chapman Instrumentation—Joddy Chapman Iceboats & Landyachts—Bob Dill By the time you get this, John Perry should have Kites—Dave Culp contacted all of you whose email addresses are on Multihulls—Dick Newick record, but it is worth reminding you that the AYRS’ Speed Trials—Bob Downhill online discussion group is up and running again albeit Steam Power—Lord Strathcona on a new server.