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Pookie

Tepukai are singularly amazing proas from the Santa Cruz Islands that take the usual South Pacific parsimony with building materials to the nth degree. The boats stretch out over the water’s surface like a gigantic water spider, covering the most area with the minimum mass. Tepukai employ slender, submersible wave-piercing hulls, centrally located mass for low pitching moments, and excellent bridge deck clearance - all very M3K (millennium three thousand).

Jim Shanahan approached me with an idea for a tepuke inspired beach cruiser, and Pookie is the result. The boat stretches itself out to a 28’ LOA x 15’ beam, without weighing much more than a Hobie Cat. In the Oceanic tradition, the boat is made mostly of woven materials: Polyester, Nylon, carbon fiber, Kevlar and Spectra.

The basic configuration is a carbon fiber space frame which supports inflatable tube hulls, trampoline deck, shelter and rig. When folded and deflated, the contraption fits inside a 4’ x 8’ x 14’ box - a sailing version of George Jetson’s flying car in a briefcase.

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Le Prao Pink

The French have a way with boats, and that savoir faire certainly extends to proas. Praocéan is a proper proa, which means it exists partially in the dreamtime - a pink elephant on parade. The "illogical" Pacific flying proa configuration, the mythical crab claw sail, the whimsical eye-shaped portholes, the VALIS hue, the Venetian posture of the helmsman, all point to a craft intended for navigation not only on the earth, but also among the stars. Fair winds and Godspeed.

Pocket Envy

I just got some spy pics of the new Chesapeake Light Craft Pocket Cruiser abuilding at Two Daughters Boatworks in Maine. I guess I can't really call them spy shots because CLC president and designer John Harris sent them in, but it sounds good. John is one of those guys who couldn't draw an ugly boat if he wanted to, and this little ship is one of his best.
14'-10" LOA, plywood stitch-n-glue construction. Beautiful!

Check out John's video of the project. More pics after the jump.

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Edel 4XCat 33

The Jan/Feb 2008 issue of Multihulls World includes a boat test of the Edel 4XCat 33 from ADN, which I happen to like quite a lot. The ADN design team is seeking that sweet spot between performance daysailer and luxury cruiser - a performance cruiser. It's a niche currently dominated by folding trimarans and its nice to see this creative catamaran version. More pics after the jump.

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Spring Cleaning

A fresh new stylesheet for Proafile v5.0, to go with a fresh new attitude. Cheers!

Samwise - Part 3

Some fairly dramatic changes since Samwise Part 2 (Part 1 is here). The biggest change is that Sam is now a balls out Atlantic proa - rig placed in the windward hull. No faux Pacific, "weight to windward" sham, an Atlantic proa is Sam I am. Larger pics after the jump.

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Canoes of Oceania

Harmen Hielkema has joined the blogosphere at Canoes of Oceania. Harmen designs and builds proas in New Zealand with an artistic eye and an appreciation for prior native art. From his blog:

Every culture with very few exceptions, somewhere in its past has some connection with the sea and a technology for moving or sailing on it. The sailboat was the first machine to give men freedom of motion without harnessing muscle power. Few of us any longer recognize that the sailboat was truly the first instrument which freed us from bondage to the land ... the waka ama, the first sailboat that could move up wind. This invention made previously inaccessible areas of the world accessible to man, ... Neither do we recall, unless our attention is drawn to it that the sailboat was the first machine to achieve powered motion without rotating parts. Bernard Smith, The 40 Knot Sailboat, Grosset & Dunlap, New York, 1963.

The Cat Came Back

Via the Boat Design Forum: Tornado sailors, Steve Lohmayer and Jamie Livingston, going under the team name of Lumpy and Bumpy, have won the annual Watertribe Everglades Challenge in a record time of just under 36 hours.

The Everglades Challenge is a 300+ mile adventure racing event that runs from Tampa Bay's Ft. DeSoto beach to Key Largo. The previous record for the event was set last year with a time of two days, 8 hours, 56 minutes by a 22 foot, double-handed skiff.

Lohmayer and Livingston passed fellow multihuller, Randy Smyth, about two thirds of the way down the course, when his trimaran suffered an unknown breakage, forcing Smyth to retire. Randy then found transportation to the finish line to greet the Tornado team upon their victorious arrival.

It's nice to see a multihull take the cup of this spectacularly challenging race. The Tornado class catamaran is (by multihull standards) an ancient design, from the drawing board of Rod MacAlpine-Downie Jr. 20' x 10' x 233 sq. ft. SA, the boat is one of those rare creations that somehow seems greater than the sum of its parts. A perennial Olympic class, the cat was recently eliminated - causing great dismay among multihull fans.

Samwise - Part 2

I fleshed out a few scale drawings of Samwise last week. In keeping with the minimalist theme, I'm doing the minimum of calculations. As you can see, proportions have altered a bit - but form follows function. The goal was to make the hull sides from straight ripped ply - 2' wide - easy as pie. The straight ply goal meant the crossbeams buried in the hulls had to go, so now they're lashed or bolted to the deck in beach cat style. The cabin has comfortable sitting/laying about headroom, 2' beam on the bottom. I'm debating whether I need a solid cabin or not. I could see small dodgers fore and aft, and making him into an open sailing canoe.

Still no rudders, as you can see. I'm quite certain the boat will self-steer as if on rails on most courses, and it would be fun to steer the boat by sail trim alone, and no rudders would save a lot of building time and trouble, but still... rudders are nice.

My enthusiasm for the lug rig has not abated. Masts are only 17' long! Read more about standing lugs in this Duckworks article by Michael Storer.


LOA: 24'
Length lee hull: 24'
Length windward hull: 20'

BOA: 12'
Beam lee hull: 1'-8"
Beam windward hull: 2'-8"
Interior headroom: 3'-6"

SA: 220 sq. ft.
Rig Height: 22'-8"

Crab Claw Tests

These are qualitative studies of slender foils and leading edge vortices for sailing craft. The results of these experiments, suffering from improvised input and variable conditions were good enough to inspire further work but produced more questions than answers.

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