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Tue May 4 - John Marples presents FOUR INTERESTING BOAT PROJECTS

posted Apr 23, 2021, 5:29 PM by PacificNorthWest MultihullAssoc   [ updated Apr 23, 2021, 5:45 PM ]

Our Zoom meeting begins first with the presentation by John Marples since he is presenting from the Eastern Time zone in Maine.

at 6:30pm(PDT)  Legendary multihull designer John Marples' presentation.  It will include the designer's own 21' daysailing trimaran, the 27' trimaran Woodenboat Design Challenge winner, a Flettner Rotor powered Searunner 34 for the Discovery Channel, and a 110' expedition power catamaran. More at

7:30  final questions for John Marples, then NWMA Meeting and Announcements  Northwest Multihull Association (, then social time.

Zoom instructions are at the very bottom of this announcement --

Looking forward to seeing you all there! 


John Marples and Jim Brown have collaborated for over 40 years developing a world-class line of multihulls, including Searunner trimarans, and the Seaclipper economy trimarans, and the Constant Camber series of multihulls.  John Marples is a design virtuoso and mechanical engineer who graduated from California State Polytechnic University, has drafted more than forty sail and power vessels, pleasure and commercial, ranging from 7 to 64 feet.

His sailing experience includes five Pacific Ocean crossings and one Atlantic crossing as well as racing, cruising and deliveries for more than 30,000 blue water miles. Aboard BACCHANAL, his Searunner 37 trimaran, he set a corrected time record of just over 8 days in the 1972 Transpac Race from Los Angeles to Honolulu, Hawaii.

His boats won the OSTAR Small Boat Class in 2005, and also bested the fleet in the Virginia to Bermuda Trawler Trek in that same year. His 27’ DC-3 Swing-wing trimaran design won WoodenBoat magazine’s 2011 Design Challenge. Mike O'Brien reviewed the Seaclipper 20 design in WoodenBoat issue 217, November/December 2010. In WoodenBoat 227, July/August 2012, Jim Brown shared the joy of sailing the Seaclipper 10.

John is recognized by the sailing community as the author of numerous magazine articles and he’s taught with Jim Brown several times at WoodenBoat School in Brooklin, Maine. He’s built five vessels longer than 20’, including two U.S. Coast Guard certified passenger power catamarans. In addition to building boats, John has built three experimental aircraft and spent over 700 hours flying on both coasts and across the country.

Designer's boat.


The WoodenBoat Design Challenge III winner (model).  Several now under construction.


A Flettner Rotor powered Searunner 34


110' Expedition Power Catamaran (rendering).  Boat is still under construction


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Meeting ID: 851 2605 0840

Passcode: 212734

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