Catamarans, trimarans and proas - PROA FILE is devoted to design, experimenting, sailing, history and generally messing about with multihulls. Join us!

12 September 2016    1 comments

Tarawa With Spinnaclaw

Gary Dierking is experimenting with the “spinnaclaw” - a crab claw rigging idea that I proposed way back in 2008. It’s pretty cool to see someone take an idea sketch and make it real - thanks Gary! Apparently, there is both good and bad news…

Read about it here on Outrigger Sailing Canoes.



27 August 2016    1 comments

Quill - a crab claw tacking proa

QUILL is an innovative tacking proa designed and built by Kim Fisher in England. The experimental vessel features a crab claw sail and a unique sliding outrigger arrangement. Kim writes:

Firstly, I would like to say a BIG thank you to Proafile for giving me mountains of useful information and encouragement to actually build this boat. I have been accessing your pages for over 3 years and this boat design is the result. (*blushing*... Read on »

 proas new designs crab claw

Quill being rigged

18 July 2016    0 comments

Project Cheers: 2016 Edition

We’re pleased to announce that ‘Project Cheers’ - the story of the 1968 OSTAR racing proa - is again in print. A book in three parts, the story of CHEERS is narrated by the three principle players: Tom Follet the skipper, Dick Newick the designer, and Jim Morris, the race syndicate organizer and financier. A very good read, especially for budding R2AK syndicates.

This new edition is a labor of love of of Russell and Ashlyn... Read on »

 racing proas history designers

Project Cheers

09 July 2016    0 comments

R2AK 2016 and Parallel Evolution

The starting horn for the second annual Race to Alaska sounded at 6:00 am, Thursday morning, the 23rd of June. 58 boats crossed the starting line and headed for Victoria, BC, the first leg of an epic 750 mile race to Ketchikan - no motors, and no support. For a few days beforehand, The small town of Port Townsend, WA was transformed into race headquarters, full of teams, boats, officials, sponsors, volunteers and media. We PT villagers... Read on »

 trimarans smallcraft racing human powered

Team Mad Dog Racing

12 May 2016    1 comments

Walk on Water

I had no idea this was even possible. Kai Lenny SUP downwind hydro-foiling. A hoverboard that works over water!




23 March 2016    0 comments

Nearly ready for the R2AK trimaran

Sealark is a 19’ expedition trimaran built for the 2015 Race to Alaska, but did not make it to the start. The construction is multi-chine stitch-and-glue plywood/epoxy with fiberglass skins, and a custom carbon fiber mast and sails. Weight is approx. 400 lbs complete. Human power is by sliding seat rowing, or paddle.

The boat requires more development and work (like figuring out how to keep the amas firmly attached) but the project... Read on »

 trimarans dock ranger


04 February 2016    0 comments

Russell Brown Refits a G32

Russell Brown of PT Watercraft is refitting a venerable Gougeon G32 in his shop this winter, and best of all, he’s blogging all the details! Sort of like hanging out in his shop, but a lot better because he’s still able to actually gets stuff done. If you’ve ever wanted to see how carbon fiber, epoxy and a vacuum bag all come together to make multihull magic (and who hasn’t?) then head on over to

 catamarans boatbuilding


02 January 2016    6 comments

Mareinoa: a proa for cruising

A report on a new cruising proa build by Manfred Meier, designed by Othmar Karschulin of Thanks to Manfred and Othmar for the submission! —Editor

I became aware of the proa when reading a book about multihulls, named “Mehrrumpfboote” (multihulls)  written by Klaus D. Kurtz. I expected that this book would deal with catamaran and trimarans only. But instead it started with a report of William Dampier, one of the earliest... Read on »

 proas new designs


21 November 2015    3 comments

Burt Rutan’s SkiGull Flying Boat

Burt Rutan is probably the most famous aircraft designer in the world, so it’s always interesting to see what he’s up to. These days, perhaps inspired by his new retirement digs in Lake Coeur d’Alene, Idaho, he’s building a trimaran in his garage. A flying trimaran named the SkiGull. The amphibious airplane is a “dream plane for Rutan and his wife, Tonya, a newly-minted seaplane pilot. Together, they plan to tour the world... Read on »

 trimarans designers

Rutan at Oshkosh

02 November 2015    5 comments

It’s a Newick

OutRig Media has announced that the official biography of Dick Newick has just been published.

Dick Newick was possibly the 20th century’s most influential multihull designer. Now aficionados of multihulls – including trimarans, catamarans and proas – can enjoy reading his official biography. This book takes readers through his early years, including kayak building and sailing, and then traveling throughout Europe in the years... Read on »

 trimarans proas history designers

Official Newick biography