Multihulls!

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

11 January 2012    0 comments

The ArcSail Proa

Malcolm Smith always has something really tasty cooking in his workshop. His latest project is a force-balanced design utilizing a ‘ring wing’ that he calls the ArcSail. The concept has huge potential for boats both large and small, and I’m very pleased that Malcolm has opted to share it with us at Proa File -Editor

I have a long time fascination with sailing boat configurations that minimize heeling moment, due to their potential for... Read on »

 reports proas

The ArcSail Proa by Malcolm Smith

26 November 2011    0 comments

More than zero

Russell Brown has posted a new (Sept. 2011) video to the PT Watercraft Channel on Youtube. It features some excellent sailing footage of his proa Jzerro, as well as some running shots of a cool power outrigger that Russell designed for a friend to use as an aquatic pick up truck in the islands. The outrigger is powered by a 20hp outboard and goes about 18 knots!

 proas power outriggers

Wild ride in the power outrigger

15 November 2011    0 comments

Zeppy 3 - Across the Med by Wind Powered Airship

Preparations are underway for a 150 mile journey from southern France to Corsica in a sail balloon. High flyer Stéphane Rousson is planning to pilot Zeppy 3 across a stretch of Mediterranean waters using only the power of the wind and a curved carbon foil based on the chien de mer by Didier Costes.

The 65.6 feet long and 16.4 feet wide Zeppy 3 recently on display at Le Bourget in Paris is filled with 200 cubic meters of helium. An... Read on »

 hydrofoils airships

Zeppy 3

12 November 2011    0 comments

James Wharram Designs Amatasi Launched

The team of James Wharram and Hanneke Boon launched their latest child, Amatasi, on Oct. 12, 2011. The award winning design, a 27’ double canoe is intended to be a practical and sustainable coastal fishing boat. As a proa designer, I certainly appreciate the elegance of the fine canoe sterns on this design, though I do find it somewhat ironic that it embraces the quarter rudder for steering, a design that harkens back to Viking long... Read on »

 new designs just launched catamarans

Amatasi 27

09 November 2011    1 comments

Viking XX - the solar road proa

I’ll bet you didn’t know a proa won second place in the first solar race ever held in the United States! Originally called Sunrayce USA, the first race was organized and sponsored by General Motors in 1990 in an effort to promote automotive engineering and solar energy among college students. The original, 1,800 mi (2,900 km) Sunrayce USA route started at Disney World in Orlando, Florida and ended at the General Motors Technical... Read on »

 proas history

Viking XX

03 November 2011    0 comments

16m Cruising Proa by James Brett

Aukland based marine designer James Brett as turned out a tantalizing rendering for a proposed 53’ (16.2m) offshore cruising proa.

The bridgedeck cabin includes a double sea berth, full galley and saloon, while the main hull contains two double cabins, and the head. The workings of the boat are the same as my Free Radical design, using the same well proven rig and rudder systems. Construction will be in plywood with ply/balsa laminate... Read on »

 proas new designs

16m cruising proa concept

22 June 2011    0 comments

Evergreen - a Fast Expedition Catamaran

This year’s WoodenBoat Design Challenge III, “A Fast, Expedition Sailboat”, is a theme near and dear to my Proafile heart. Last winter, I was working up a design that fit the parameters pretty well, so when Canadian designer Laurie McGowan suggested we enter the contest, we chose EVERGREEN, a 6m (19’-8”) camp-cruiser cat. We had to really push to make the May 29 deadline but in the end we got the packet in the mail and had a... Read on »

 new designs catamarans

Evergreen sketch