Showing posts with label gps. Show all posts
Showing posts with label gps. Show all posts

Saturday, March 19, 2016

Wooden Boat Plans And Kits | Three Bridges Race 2015 Drone Video

Wooden Boat Plans And Kits



Ive covered the Three Bridges Race before on Earwigoagin, a 50 mile jaunt around winding narrow rivers, under low hanging bridges, in the English Norfolk Broads. Here is a drone video of this years event, no sound, just bucolic images of classic sailing classes starting the race under typical English summer weather, alternating glorious sun with grey belly cumulus. From the text blurb accompanying this video:

"The 55th Three Rivers Race was the first time aerial photography was allowed by organisers, Horning Sailing Club. Richard Kemp of Skyhover used an octocopter to photograph the start of the race . The three rivers from which the race gets its name are the three northern rivers of the Broads (Norfolk, UK), the Bure, Ant and Thurne. There are numerous Windmills and pumps such as the white Thurne Mill along the route.

At first the race sounds simple, an out and back course, in which you must round four marks and return to the start. It begins to sound trickier when you discover the course is in the order of fifty miles in length. It requires great planning and skill to navigate in unpredictable tides and variable winds. Many of the classes are for historic boats built in Norfolk and Suffolk for the difficult local conditions: such as the River Cruiser (first built 100 years ago) Yare & Bure One Design, Norfolk Punt. The greatest outsider challenge comes from the extremely fast Thames A Raters."


Navigators & General Three Rivers Race 2015 from Skyhover Aerial Video Norfolk on Vimeo.



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Wednesday, March 16, 2016

Pontoon Boat Plans Aluminum | Poor Mans GPS Course Tracker

Pontoon Boat Plans Aluminum


In the discussion of what are the fastest planing angles for hiking singlehanders (see the comments to this post) and how to determine them, Jim Champ sent along a link to his excellent how-to article on using a smartphone as a GPS course tracker. In following his procedure, except for the smartphone, everything else seems to be free. Highly recommended reading for the geeky sailor somewhat strapped for cash.

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Monday, February 29, 2016

Boat Designs And Plans | Header Photo Curvaceous French Classic Moth

Boat Designs And Plans


Mariposa Moth Classique, Plans de Moth Classique


Mark Morell Photo

The previous header photo featured a French Classic Moth Mariposa (Spanish for butterfly) sailing in tandem with a Nantais Vintage Moth (blue sail) at the French annual Classic Moth rally and regatta which was held yearly during the early 2000s. The strong sheer gives Mariposa a traditional look which suggests a traditional round bottom shape.

Nope. The header photo above is an optical illusion as other photos reveal that Mariposa is actually a multi-chine plywood shape (a three-planker) with the bow sections developed and pulled up.

Mariposa has a flat rocker panel that starts just in front of the daggerboard case and a topside chine that curves up to meet the gunwhale about 600mm from the bow. The developed bow suggests this Moth was built using the stitch and glue method.


The French Classic Mothists weigh their Moths like the Americans - on a bathroom scale. The scratched up bottom shows that Mariposa is not a coddled racing dinghy - and gets plenty of use.


An in-the-water shot of Mariposa shows the topside chine clearly disappearing into the gunwhale.
This Moth design is visually appealing - Mariposa may not be much of a racer but thats OK.


The designer is the tall gentleman on the left. I have no idea who he is. Maybe some reader could help out on identification?

Update, August 14: Dominique Banse to the rescue with the designer indentification. Thanks Dominique!
"There is an article about this Moth in the French magazine “Chasse-Marée” number 147 from November 2001. The owner builder’s name is Bertrand Warion. The boat is built with 5mm plywood and weights 76 kg."


Update September 29, 2015: Designer Bertrand Warion adds a comment to this post updating us on the latest with Mariposa.
"Hello ,I am Bertrand Warion who designed Mariposa and usual reader of your blog.

The boat is still in good condition with great modifications, large cuts to flatten the bottom rocker and new cockpit plan, more "modern" but quite unconfortable for me. [I am] thinking to ameliorate that point.

I did not sail Mariposa [for] 5 years (leaving job, town) and [now] mainly designing and building others boats but i will recondition the boat soon.

Here are some new Mariposa pics.


There are a few enterprising readers of this post who could put together their own version of Mariposa, at least in model form. Earwigoagin is always open to publicizing such design experimentation.

Through the early 2000s the French Classic Mothists held an annual get together. I think it was originally held at one of the clubs on the Seine but then moved over to a small lake about 100 km. south of Paris, sponsored by Cercle de la Voile du Centre, Etang du Puits, (Google translation - the pond of the well), just off the Route dArgent. Though well attended, in a mystery still not explained, the annual French Classic Moth gathering and regatta just stopped. [Mystery somewhat explained - see below] .


The mystery of the French Classic Moth get-together got somewhat clearer when reader Dominique Banse emailed an article from a 2001 issue of Chasse-Marée, the French classic/traditional boating magazine. It turns out that all these photos were taken at a Classic Moth design competition that was sponsored by Chasse-Marée and held at Suc dErdre, just north of Nantes (and not at Etang du Puits as I wrote initially). There was a turn out of 20 Moths Classique, both new designs and old, as well as several IMCA narrow skiffs. There is still no explanation why the Classic Moths in France could not keep the annual event going after 2001.


 I recently rediscovered on the Web, photos from Marc Morell (who took all the photos used in this post) documenting the Suc dErdre. The diversity of French Classic Moths is just astounding! Ill feed more of these photos into later posts on Earwigoagin.



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