Multihulls!

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

18 June 2015    12 comments

The Flying Boat

Advanced Aerodynamic Vessels of Nantes, France, aims to improve the speeds of passenger vessels by harnessing the flow of apparent wind. The catamaran employs planing stepped hulls similar to a seaplane, but the resemblance to a flying machine doesn’t stop there. The central bridgedeck is carefully shaped into a wing that creates aerodynamic lift and reduces both displacement and drag:

The operational speed of today’s small... Read on »

 new designs catamarans airships

AAV sea trials

09 June 2015    0 comments

R2AK Update - June 9

The Race to Alaska is proving to be just as tough on boats and sailors as expected. Uncharacteristically strong winds (up to 20 knots dead on the nose) and the resulting brutal chop are discovering every weak link in the fleet, causing gear failure, DNF’s, even a dismasting. Two of the early race favorites, the 24’ carbon fiber catamaran of Team Turn Point Design, and the Paul Bieker designed proa of Team Pure and Wild, called it... Read on »

 racing

Team Elsie Piddock

02 June 2015    2 comments

Multihulls in the Race to Alaska

The R2AK starting gun goes off in less than two days: June 4, at 5:00 am. Among the fleet of 56 boats due to depart Port Townsend on Thursday morning, nearly 50% are multihulls. Point Hudson is beginning to resemble Plymouth during the OSTAR and St. Malo during the Route du Rhum! The harbor is filling up with the coolest multihulls we’ve ever seen, many purpose built for the race. Not to say that there aren’t very interesting monos... Read on »

 trimarans racing proas catamarans

ARC 22

18 May 2015    1 comments

Richard Newick’s first try

This is TRINE, the first trimaran design of Richard C. Newick. Still going strong as a day charter boat in St. Croix, USVI, over four decades later. Not bad at all for plywood, and a damn good first try.

Thanks to Bob W. at Boat Bits for the submission! If you have some shots of interesting historical multihulls, send them in! We’d love to post them.

 trimarans history

Trine

15 May 2015    1 comments

The Iditarod with a chance of drowning

The Wave Writer - Kurt Hoehne, on the R2AK and its founder, Jake Beattie, and the Brown/Bieker proa of Team Pure & Wild. -Editor

In today’s world, there are few adventures with Big Questions. It seems every adventure has been done at least once before. Somebody’s going to find a new route to the summit, win the game on a superlative performance or lucky bounce, or find that extra bit of speed around the race. Those are relatively... Read on »

 racing proas

The proa under construction

25 April 2015    0 comments

R2AK - April Update

The Race to Alaska - only 40 days until the June 4 starting gun! The new boats are finally getting splashed, the first hurdle of many to come.

The first and only proa to be entered in the race is Team Pure and Wild, launched this Saturday at CSR Marine in Seattle. Designed by America’s Cup foil master Paul Bieker, built by legendary proa builder Russell Brown, and raced by the team of Joe Bersch and Dalton Bergan (I-14 National... Read on »

 racing proas just launched

Team Pure and Wild

15 April 2015    0 comments

The Foil Alphabet

Rudders and centerboards with hydrofoils, profiled arms, wing masts… after the 34th America’s cup, it would be easy to say “we are in the age of wings”. And now it’s not only on multihulls but also on monohulls!

However, wing masts and hydrofoils on sailboats are not a new invention. In 1913 Alexander Graham Bell and Casey Baldwin built Nancy, a hydrofoil sailing model. In 1938, Robert Rowe Gilruth, the “father of America’s human... Read on »

 hydrofoils

The Foil Alphabet

09 April 2015    4 comments

The Trickle Down Effect

I’ve had an interest in hydrofoil sailboats ever since I ever heard about them, when I found ‘The 40-Knot Sailboat’ by Bernard Smith in the Kirkland Public Library as a teenager, which I must have checked out a dozen times. A few years later I was glancing through the Whole Earth Catalog at the neighbors and I saw an entry for ‘Flying Hydrofoils’, published by the AYRS in 1970, which I promptly ordered. So it has been with... Read on »

 hydrofoils history

Gunboat G4

09 April 2015    0 comments

Demountable 20’ power outrigger in Victoria BC

Sweet Aloha is a 20’ power outrigger built last year by an experienced boat builder. Made of marine plywood and West System epoxy, the boat is sturdy, safe and fast, even with low horsepower. 20’ long by 12’ beam assembled, the boat is demountable and currently in dry storage. Oars, motor, gas tank, life vests and anchor are all included, and best of all, the price is right - FREE! Find it here on Craigslist in Victoria B.C. Thanks to... Read on »

 proas power dock ranger

Sweet Aloha

21 February 2015    4 comments

Conquered Sun

The 41’ Invictus is a nice example of a ‘70’s era multihull that was moored at Shilshole Marina in Seattle for many years. It was actively campaigned in local races, with the sugar scoop transom extension being a later mod for more speed. Sadly, it appears that Invictus has run into some hard times and is now being offered for scrap.

Even though the boat is old and apparently decrepit, it has nice bones with a fine hull, high wing... Read on »

 trimarans history dock ranger

Trimaran Invictus