16 August 2014 1 comments
The sloop is the rig of choice on 90% of all modern sailboats. Why not on proas as well? Here’s why.
Rigging a proa as a sloop is a true blending of East and West. The proa is considered the pinnacle of Pacific canoe design, and the sloop is often considered the finest invention of Western "yachting". Brilliant in their own context, what happens when we creatively recombine their DNA?
First consider the sloop. Beautiful, efficient,... Read on »
12 August 2014 2 comments
The story of this rig begins in Hawaii, with Euell - “Have you ever eaten a pine tree?” - Gibbons, a half century ago. Now, thanks to a renewed interest in proas and the easy flow of information on the Internet, the rig has received some new attention, and looks to become a very good proa rig indeed.
Writer and naturalist Euell Gibbons was living in Hawaii and dining on the jungle flora and fauna in the 1950’s. He soon realized that... Read on »
07 August 2014 0 comments
John Dalziel gives a summary of his series of experiments on his proa C. L. Brock with a Bolger-type rig. Note: Frequent references are made to Philip C. Bolger’s proa "cartoon", which first appeared in an issue of the late Small Boat Journal, and was later published in Boats with an Open Mind; International Marine, 1994.
The Bolger proa rig echos the unique symmetry of the proa: the airflow reverses direction during a shunt, just... Read on »
23 July 2014 3 comments
An overview of the potentials and problems of the remarkable rig of the native Pacific proa.
The Traditional Oceanic sprit rig (aka crab claw) has, in Western eyes, been considered a romantic if not particularly effective rig that most likely compared to the Mediterranean lateen in aerodynamic performance. That is, until famed sailboat aerodynamics researcher C. A. Marchaj published this startling graph in his research paper Planform... Read on »
18 July 2014 1 comments
The proa has unique requirements for a sailboat rig, the main one being that it is reversible fore and aft. Since no Western craft have this ability, we who are developing the proa for use here in the West are truly in uncharted waters.
The obvious place to look for inspiration is with the traditional proa rig: the Oceanic sprit, developed over thousands of years of ocean voyaging by the Pacific Islanders. This rig, often called the... Read on »
08 July 2014 0 comments
The illustrated glossary of bilaterally asymmetrical sailboats.
aerohydrofoil Sailboat concept pioneered by Bernard Smith in the 1960’s and described in his seminal work The 40-Knot Sailboat. Smith’s analysis of sailboat kinetics led him to a groundbreaking design involving no traditional sail or hull, instead utilizing solid airfoils and buoyant hydrofoils, arranged in a proa-like formation. Many of today’s proa advocates credit the... Read on »