Multihulls!

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

12 May 2016    0 comments

Walk on Water

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

 

 hydrofoils

Sup-hydrofoil

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

Sealark

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 gougeon32.blogspot.com.

 catamarans boatbuilding

G32

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 multihull.de. 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

Mareinoa

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

14 September 2015    5 comments

Le Prao Hot

Here is 6:20 of hot proa footage from our friends at Le Prao Pétrel. Pétrel is a stitch-and-glue plywood “sharpie” proa with aluminum beams and a crab claw rig. In other words, very basic and simple. However looks are deceiving because this boat has been under steady incremental improvement since 2008, and the recent videos are proof of the fruits of slow and steady perseverance.

The blog is an excellent document of the trials... Read on »

 proas

Petrel

03 July 2015    7 comments

Palindrome: skin-on-frame proa for the R2AK

A few days after the start of the R2AK I was biking around Point Hudson Marina to see what I might see, and decided to duck into a grassy field behind the RV lot when I ran into a proa! I skidded to a stop and pointed at the boat, “That’s a proa!” I cleverly exclaimed. The young man who was doing something on the boat stopped what he was doing, smiled and affirmed “Yes, it is!” That’s how I met Dillon Majoros, the owner,... Read on »

 racing proas new designs

Palindrome - land sailing

28 June 2015    3 comments

Hocus Pocus trailerable proa

Rafael and Heidi Francke update us on their latest mega-trailerable multihull - this time a proa. Congratulations on a quick build and a successful first sail. -Editor

Here we go again. This time it is NOT a folding catamaran like Cat2Fold. There is a change in wind direction.  It is a Pacific proa.

Last year we were playing with the idea of a “folding” (actually “demountable”) power catamaran. The playing got serious to the... Read on »

 proas just launched

Hocus Pocus 1

18 June 2015    0 comments

Gold Coast launches new Bieker 53 cat

Gold Coast Yachts of St. Croix, USVI, have launched the new Bieker 53 performance cruising catamaran. The polarizing aesthetics aside, we are very interested in this build. The curved boards are a moderate use of hydrofoil tech that is extremely promising. Unlike the fully flying Gunboat G4, FUJIN’s foils do not lift the hulls completely free of the water’s surface. The boards augment righting moment and pitch stability, making the... Read on »

 just launched catamarans

Fujin launch