Crab Claw

03 February 2017    6 comments

Crab claws on ice

A report by Peter Adrian from Sweden on his crab claw rigged iceboat:

Am sailing my second season my modified iceboat: an Isabella Classic with 5m2 (54 sq. ft.) crab claw sail. Just a win-win over all compared against the same boats with conventional Bermuda rig. Just one thing I’ve noticed is she no longer lifts the windward runner at over 60km/h (37 mph).

The yard is made fast to the apex of a bipod mast and fixed to the hull at…

 iceboats / crab claw 

Bullet

12 September 2016    1 comments

Tarawa With Spinnaclaw

Gary Dierking is experimenting with the “spinnaclaw” - a crab claw rigging idea that I proposed way back in 2008. It’s pretty cool to see someone take an idea sketch and make it real - thanks Gary! Apparently, there is both good and bad news…

Read about it here on Outrigger Sailing Canoes.

 proas / crab claw 

Tarawa-spinnaclaw1

27 August 2016    1 comments

Quill - a crab claw tacking proa

QUILL is an innovative tacking proa designed and built by Kim Fisher in England. The experimental vessel features a crab claw sail and a unique sliding outrigger arrangement. Kim writes:

Firstly, I would like to say a BIG thank you to Proafile for giving me mountains of useful information and encouragement to actually build this boat. I have been accessing your pages for over 3 years and this boat design is the result. (*blushing*…

 proas / new designs / crab claw 

Quill being rigged

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 and…

 proas / crab claw 

Petrel

12 December 2014    2 comments

The Crab Claw Comeback

The crab claw as an ideal wind-electric hybrid yacht rig

Way back around the turn of the century, there was a lot of excitement about the potential of the native Pacific island canoe rig, often called the “crab claw” sail, so called because the plan form resembles the claw of a crab. The rig has some serious advantages, see here and here, but also some serious limitations, the primary one being that it is not as weatherly as a modern…

 new designs / hybrid power / crab claw 

Motorsailor with delta wing sail rig

23 July 2014    3 comments

Proa Rig Options: Crab Claw

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…

 proas / library / crab claw 

Baurua of kiribati

24 December 2013    0 comments

Outrigger Junior from CLC

Quick on the heels of the proa Madness, John Harris of Chesapeake Light Craft has announced the new Outrigger Junior as the latest member of the CLC stable. A 15’ plywood stitch-n-glue sailing outrigger, OJ is car-top-able, beach-able, tack-able, build-able and afford-able, so maybe not so crazy after all. Special thanks to Proafile reader Brian P. for the submission!

Inspired by Warren Seamen’s Malibu Outrigger, this boat is truly a…

 proas / new designs / just launched / crab claw 

Oj-1