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How to home-build a Moth - James Sainsbury's step-by-step guide!

classic moth sailboat plans

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classic moth sailboat plans

Cottrell Boatbuilding

Maine's largest builder of small wooden boats.

A Tale of Two Classic Moth Boats

classic moth sailboat plans

Classic Moth Boats

Classic Moth Boats are a wooden boat builder’s dream project. You might know us for building our Penobscot Wherries, Maine Whitehalls, and the Catspaws. We’re even known for our restoration projects, and giving out advice on how to take loving care of your small craft sailing boats . But did you know that we take on unusual projects as well?

In 2014, we received a request to build two Classic Moths from a gentleman wanting to relive the glory days of his sailing youth. After a bit of research, many phone calls, and emails, we came up with a plan to build them. His one direction to us was to build two of the most beautiful Classic Moths that have ever been built. A pretty tall order. We believe that our results speak for themselves.

If you’ve never heard of the Classic Moth they are really quite a treasure to behold and worth checking out. You can find lots of great information at The Classic Moth Association . Classic Moth Boats are singlehanded racing sailboats that have their roots in American boat design. First created by Joel Van Sant in North Carolina, the racing beauty packs impressive power in its 11-foot length and 75-pound weight.

The Results Astounded All of Us

To say we were excited to build these two beautiful small craft race boats is an understatement since our most popular orders are for traditional rowing craft. The opportunity to design and build something so exotic and charming really got our creative juices flowing. Lucky for us, the gentleman who ordered the twin Classic Moths was just as thrilled as we were.

We are always ready for a challenge when it comes to building small craft boats that will dazzle customers and become a point of pride. If you have a special small craft wooden boat in mind, we encourage you to give us a call and let us help you turn it into a reality.

Classic Moth Boats construction

Classic Moth Boats construction

Classic Moth Boats construction

Lil Suzy Too

Moth

Moth Moth_three

Lil Suzy

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Earwigoagin

Saturday, march 20, 2010.

  • Classic Moth plans
  • Little Mae" PDF plans from magazine.
  • Little Mae" Metric station offsets.
  • French Vintage Classic Moth "Nantais" build - classique Moth voilier.
  • French Fragniere Moth Classique - sections and offsets.
  • Francois Vivier Classic Moth kit -conception classique Moth voilier.
  • Some other posts with references to Classic Moth plans.
  • Offsets for the Zippy design, a modified Proust - conception classique Moth voilier.
  • Zippy sections in PDF format.
  • Plans for Willam Crosby's vintage Skimmer scow design in PDF format.
  • Plans for Len Morris's original Aussie scow, the MK II in PDF format.
  • Duckworks Magazine offers a set of Classic Moth plans by Paolo Lodigiani.
  • The Florida Cates offsets and partial plans.
  • Mistral Hull Panel Offsets
  • Mistral Y2K Section Offsets
  • How to Bend Up the Mistral Hull Panels
  • Plans for Benoit Duflos' flat-bottom Moth-Pop
  • Drawing for RazMoth by Bertrand Warion
  • Offsets for Bilbon by Christophe Couton
  • Lines for the Swiss-Dunand
  • Section drawing for the Duflos
  • Brewsabee, another narrow waterline Moth
  • Puriri, a 1962 New Zealand multichine design

classic moth sailboat plans

  • A discussion on the differences between a Mousetrap and a Mistral .
  • A  short video of a a Mistral hull modified with a flatter Europe type transom .
  • Mistral hull panel offsets can be found here .
  • Mistral Y2K section offsets can be found here
  • More Mistral images from Google .

classic moth sailboat plans

  • A Post about Tweezer.
  • View the YouTube of Tweezer's construction.
  • Tweezer's new owner.

classic moth sailboat plans

"I know this is an old post but as for the Savannah Wedge not being competitive, I finished third in a Savannah Wedge in the '99 midwinters sailing one that I borrowed from Jerry Carter. The boat was amazingly quick I thought, It beat Mean Tangerine and Randall Swans Vanilla . in extremely light air conditions. I think the boat has suffered from sailors who didn't understand the boat." -Briggs Monteith

classic moth sailboat plans

  • Click here to view his restoration of a Fran Abbott Moth.
  • Click here to view his restoration of a Fletcher/Cates Moth.
  • And his latest restoration of a Ventnor copy.

classic moth sailboat plans

  • My answer to my first email inquiry about Classic Moths..... Classic Moth Designs Part 1 
  • And also a good read....... Why a Classic Moth is Better than a Laser .

9 comments:

Excellent. I think I fell in love with the moths from that Youtube video of the two guys making one. Just the look of lacquered wood and .... love.

anyone have a plan for one thats not 400 dollars

I know this is an old post but as for the Savannah wedge not being competitive, I finished third in a Savannah wedge in the '99 midwinters sailing one that I borrowed from Jerry Carter. The boat was amazingly quick I thought, It beat Mean Tangerine and Randall Swans Vanilla. extremely light air conditions. I think the boat has suffered from sailors who didn't understand the boat. -Briggs Monteith

classic moth sailboat plans

I was quite interested in your moth boat and i was wondering if u could tell me where i could get the plans for that dingy

classic moth sailboat plans

Eric, Even the plans that are available expect you to have some boatbuilding experience, or at least be able to puzzle out the details. Contact our class secretary through www.mothboat.com if you would like to get some older plans. Probably the most complete plans are the Cates but I've put many of the images from those plans up on this blog. What sort of boat building experience do you have?

Hi, I find this site really interesting. There is so much information available, and would love to build a one off moth along the lines of moth-pop.

classic moth sailboat plans

Hello, Love your blog. My first boat was a "moth nantais" which I finished in 1974 (me being 14 years old, the boat was begun by 2 of my dad's colleagues, who found out halfway that they were building a single person boat ;-) ). Unfortunately, I've lost the building plans of that boat, and am now very much looking for them. Can you help ?

Aubine, Unfortunately the only Nantais plans I was able to find online were the ones that are posted above. Louis Pillon may have plans but I don't have his address. Guimbert Alexis built a Nantais several years ago and may be another one to search for plans. You can also look at some of the material on boatbuilding on this blog .

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Description

Additional information.

Length 3.35m Designer: Paolo Lodigiani Chine hull, Stitch & Glue construction Building Skills: Amateur

The origins of the Moth class go as far back as 1930 and the basic idea - very similar to the Ten footer, was to allow with very small boats freedom of creativity by the designers. In more than 70 years, the success has been enormous and is demonstrated by the fact that from the Moth, a very diffused monotype called Europa evolved - which was also chosen as a female Olympic boat. In these last years, the class has developed into various extreme shapes, giving rise to those "little monsters" which we mentioned in the introduction to the Ten-footer class.

The Moth we designed does not expect to compete with these boats, which are too sophisticated from the construction point of view to be built by amateur constructors - the more competitive prototypes, in fact, weigh between 15 and 20 kg and, fully equipped boats ready for sailing, may reach 30 kg. It is, however, a fast and enjoyable boat comparable to the Europe, of which it retains the sail surface. The profiles remind us of the Ten-footer SCHEGGIA - that have been slightly modified to take into consideration the fact that the boat is conceived to navigate with winds, which are on average, stronger than those normally found during a Ten-footer sailing regatta. Although having a narrow hull (with less than a 90 cm waterline) and designed so as to minimize wet surface, it is relatively more stable than the SCHEGGIA and tends more to plane. The extra foot in length of the hull leads to quite a sensitive variation of performance and, whereas in the Ten-footers, play prevails over the sportive aspect, the MOTH may, by all means, be considered as a really enjoyable regatta sailing boat, also affording good performance. The construction is in plywood with the "stitch and glue" method. The V bottom and two chines, besides allowing round hull shapes, give rigidity to the hull, which becomes solid without it being excessively heavy.

length OA 3.35m deck beam 1.40m displacement 52.5kg sail area 8.30 m2

classic moth sailboat plans

PLANS 9 sheets A3 Building instructions and material list

hull V BOTTOM 2 CHINES sail plan MARCONI CATBOAT skills requested LITTLE EXPERIENCE construction method STITCH AND GLUE

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Scow Moth Designs

Discussion in ' Sailboats ' started by luckystrike , Nov 26, 2014 .

luckystrike

luckystrike Power Kraut

Hi There! Yesterday I found a video on youtube and was fascinated by the simple elegance of this boat. Must be great fun to build and sail one. https://www.youtube.com/watch?v=vpPPYhM_2-U (More from this guy in his channel) It is unlikely that anybody can define the design in the video but perhaps there are a few people that can help me to find a good scow design. My own researches lend to the bunyip. Is this a good boat or is there a better one to build. What is this boat, looks quite actual? View attachment 96047 Are these blaning bottoms are really rectangular or is there a little curve on the outside? What is a typical width of a planing bottom? I know that these questions are a little crazy, but I would be thankful for some answers from the scow sailers here on boatdesign. Best Regards, Michel  

daiquiri

daiquiri Engineering and Design

A good info about scows, their history and various classes can be found in this Wiki page: http://en.wikipedia.org/wiki/Scow Since the size, number of crew and handling varies a lots between different scow types, the first question would be: what type or size of scow are you after? Cheers  
daiquiri said: ↑ Since the size, number of crew and handling varies a lots between different scow types, the first question would be: what type or size of scow are you after? Cheers Click to expand...

gggGuest

gggGuest ...

The earlier australian scow moths were certainly absolutely flat bottomed, indeed some were completely rectangular in section, albeit with a lot of shape in plan and profile. The later ones got a lot more complicated though. If you can get hold of a copy of australian Wooden boats Vol 1 (eg http://books.google.co.uk/books/about/Australian_Wooden_Boats.html?id=ISyPAAAACAAJ ) that has lines for the Australian Mk 2 Moth, which looks a pretty straightforward build. Also have you seen this... https://www.youtube.com/watch?v=wWkd2e8apSI  

Doug Lord

Doug Lord Flight Ready

Scow Moths Michel, contact Doug Halsey-he's a member here and I believe he used to race scow Moths. http://www.boatdesign.net/forums/profile/doug-halsey.html  

CT249

CT249 Senior Member

luckystrike said: ↑ Hi There! Yesterday I found a video on youtube and was fascinated by the simple elegance of this boat. Must be great fun to build and sail one. https://www.youtube.com/watch?v=vpPPYhM_2-U (More from this guy in his channel) It is unlikely that anybody can define the design in the video but perhaps there are a few people that can help me to find a good scow design. My own researches lend to the bunyip. Is this a good boat or is there a better one to build. What is this boat, looks quite actual? View attachment 96047 Are these blaning bottoms are really rectangular or is there a little curve on the outside? What is a typical width of a planing bottom? I know that these questions are a little crazy, but I would be thankful for some answers from the scow sailers here on boatdesign. Best Regards, Michel Click to expand...
Well, looky what's turned up with some searching... From the Australian Moth site we have some plans in their design guide... http://www.moth.asn.au/rohans_site/design_guide.html Firstly the Mk2, and these are even basic building plans http://www.moth.asn.au/rohans_site/download/mkII_moth_plans.pdf And then the later "Mouldie", which had to be cold moulded from veneers, although later on folks made multi chine boats to the same basic shape. http://www.moth.asn.au/rohans_site/download/Cole_super_moth.pdf  

tdem

tdem Senior Member

NZ Moth plans: http://www.sportsground.co.nz/stewartsgullysailing/35489/1/ These are still raced.  

NoEyeDeer

NoEyeDeer Senior Member

Interesting note on that Aus. Moth page about WA boats in the '70's having the bottom plywood at 45 degrees to give a stiffer bottom.  
gggGuest said: ↑ Well, looky what's turned up with some searching... Click to expand...

messabout

messabout Senior Member

Any more comment about the "gull wings" at the bow of Bunyip? What is the rationale for that feature? Since a lot of the OZ designs seem to have them, there must be some merit.  

PI Design

PI Design Senior Member

There's an excellent facebook page if you search 'scow moth'.  
messabout said: ↑ Any more comment about the "gull wings" at the bow of Bunyip? What is the rationale for that feature? Since a lot of the OZ designs seem to have them, there must be some merit. Click to expand...

The Q

The Q Senior Member

Just for added confusion there is the British Moth as well http://www.britishmoth.co.uk/  
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Facebook and tunnels Hello Everybody, I heared about the Facebook group and joined it, even if Iam a facebook denier. Lots of good stuff, the japanese guy (from the video) is also there and has posted his design to share. The tunnels at the front, and sometimes even hollow bulkheads there seems to channel the incoming water and guide it under the planing bottom. I think it creates more lift at the front which is quite important as the scow moths have only a little freeboard and tend to nosedive when sailing in (even small) waves. I know this hollow bottom stuff from the 80' and 90', when we made these channels into our windsurfboards to create more lift. From our feeling we did right. I had a board with 4 channels, worked well! Ok, I have now 5 different and succesful designs on hand, thats more than enough to read the principles of scow design. And two written construction manuals including the scantlings. Thanks to the god of old fashioned paperwork ... I would have made it far to strong, heavy and expensive.) Next step is to start design work. To adapt the Moth for my physical needs (48 years of age, 1,92m tall and more than 100kg heavy, it seems as the "fat moth" will be 3,6 to 3.7m long. Beam is not decidet yet, but bottom width will be around one meter. It will have a single chine hull with a slightly rounded bottom to allow permanent planing even if the boat is not perfectly trimmed upright. Stressforming the plywood a little will stiffen the structure. And the details I mentioned above, I like sexy curves. I will be offline until sunday 7th and looking forward for more discussions. Again, many thanks for your help and ... Greetings from the ******* cold North Sea Coast, Michel  

Terje Dahl

Scow with a hint of bow?

pironiero

Holy moly 2 mast junk rigged 29ft scow!

Any point in scow bow without canting keel.

Air De

Unclear results from VPP of a Scow Mini 650

Melges mc scow.

misanthropicexplore

1/2 size, offshore Thames Sailing Barge/Garbage scow/liveaboard

dsigned

Interesting "scow bow" on an old Route de Rhum competitor "Ovum"

Dolfiman

From classic bow to scow bow

Donald B

Flipper Scow

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Boat Design Net

March / April Issue No. 297  Preview Now

classic moth sailboat plans

Sailboats - Cruising

MOTH has nothing to do with the extreme modern Moths which fly on the water supported by foils. It has been conceived in the spirit of the Classic Moth Boats and in accordance with the class rules as an enjoyable and fast boat. Although having a narrow hull (with less than a 90 cm waterline beam) and designed so as to minimize wet surface, it is easy to sail also for beginners. The construction is in plywood with the "stitch and glue" method. The V bottom and two chines, besides allowing almost round hull shapes, give rigidity to the hull, which is strong and light at the same time without being excessively heavy. More information at: www.bcademco.it

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Low-life Sailing

The “International Moth Lowriders” are the original non-foiling International Moth sailing dinghies.

These dinghies are fast, agile and diverse in nature, each year a new design and iteration was revealed by some of the most forward thinking boat designers of this century.

Click more below

The International Moth class is a “development” dinghy where the rules around hull design allow for a huge variety of shapes and configurations, with a limited set of rules defining hull length, width and concavities and a maximum measured sail area, and no minimum weight limit. Before the current generation of fast foiling International Moths were developed in the early 2000’s, there were 70 years of design development of Moths that were displacement dinghies that progressively got lighter, sprouted wings & trampolines, and got ever narrower on the waterline.

They were challenging to sail, mainly home built out of thin plywood, and offered thrilling sailing on a budget. Now they’re appealing to a new generation of enthusiastic sailors with limited budgets as well as the “Old Hands” who’ve returned to re-live the golden times of their earlier years.

The Lowrider Association in the UK, formed at the beginning of 2024, has already created a small list of open meetings. The 2024 UK Lowrider National Championship will be held at the Weymouth & Portland National Sailing Academy from the 26th-28th July.

As the season progresses, Notice of Races and Race Reports will be published here as well as at Yachts & Yachting Online.

We will attempt to keep you fully informed about all the latest developments.

However, our Facebook Group is where you will find out all about the latest development and gossip in real time.

Youth Sailing

In the UK, the Youth Sailing scene at most clubs, as encouraged by the Royal Yachting Association, clearly focuses the junior sailors on the “pathway” boats that encourage competition in chosen one-design classes of dinghies. This clearly creates a very clear elite of the very best youth sailors, but not all young people are attracted to such a regimented choice.

The unique, quirky and ultimately challenging nature of International Moth Lowriders has always appealed to the young in the past, and we clearly want to maintain that tradition.

classic moth sailboat plans

The first few years of the International Moth Lowrider Revival, which started around 2016, focused on finding old and abandoned boats and restoring them to a condition where they could be raced again. After about 7 years of searching out the old designs, it became apparent that newly constructed boats would be needed to offer an alternative to those wanting to join the class of non-foilers. There have been a number of individual new designs constructed during the period, but the latest development is the creation of a female mould for production run of a Magnum 6 design from the mid-1980’s, which is deemed to be an allrounder design that most sailors could sail if they have the necessary sailing skill required of any Moth sailor.

Sailing Guides

Over the years, Moth sailors have always maintained that the level of skill and agility required to sail a Lowrider International Moth is a step above that needed to sail an average dinghy. The boats will fall over if left unattended, as the light weight and narrow beam at the waterline of most lowriders means they are highly unstable, likened to riding a unicycle. We have pulled together various articles written by experienced and successful “Mothies” to help those new to the class learn how to setup their newly acquired lowrider, and successfully sail this demanding class of boat.

classic moth sailboat plans

  • Moth Records
  • Rules and Documents
  • Meetings and Reports
  • Netherlands
  • New Zealand
  • Switzerland
  • United Arab Emirates

About the Boat

The international Moth Class is the fastest one Person Dinghy in the World.

IMCA – Committee

Shaun ritson / chief measurer, graeme southerland and franco greggi / executive committee.

Sponsored by

Classic Moth Boat Association

  • Constitution & By-Laws
  • Measurement Rules
  • Vintage Measurement Rules
  • Racing Divisions
  • General Racing Tips
  • S Curb Jibe
  • Improve Your Starts
  • Sailing Glossary
  • Racing Rules
  • This is How I Do It
  • Roll Tank Deck System
  • Dorr Willey Project
  • Charles & Paul Doing It Right
  • Little Mae Too Plans 1943
  • Louis Pillon Plans
  • Cole Super-Moth Plans
  • Some Building Tips
  • Some Material Sources
  • Europe to Europa
  • Wax On or Off
  • Sail Cleaning Tips
  • Dotan Rudder
  • Simple Knots

classic moth sailboat plans

Help For Classic Moth Builders And Designers

classic moth sailboat plans

  • This is fairly easy to accomplish in any one of 4 basic constructions.
  • 1/8 inch plywood covered in epoxy/polyester glass
  • 1/4 inch light weight (LUAN) plywood (no glass)
  • Molded fiberglass (3-5 plys of 10 oz cloth)
  • Fiberglass/foam sandwich
  • Narrow deep hulls are quick upwind and carry heavier skippers well, but are difficult to control downwind, especially in a following sea.
  • Lighter skippers need a beam near the maximum for upwind work in moderate to heavy air.
  • "V" shaped hulls handle chop well, but do not plane as soon as a flatter section.
  • Ensure adequate distance between the boom and cockpit floor for older skippers. The easiest ways to increase the clearance without sacrificing sail area is include generous crown in the foredeck at the mast or add depth to the hull throughout.
  • Remember that most successful Moth designs have been compromises. Think, plan, then build.
  • Moths are SAILBOATS. No matter how good the hull design, or skilled the skipper, a poorly shaped sail or one that does not fit the spars correctly, will sabotage the entire effort. I recommend purchase of Moth sails only from sail makers experienced with classic moths who are aware of the skippers size, and the relative stiffness of the spars which will be used.
  • If you don't want to worry about any of the above, come to some of our races and see which of the different designs work best for the people who are the most like you. Then, build or buy a similar boat.

Building a Moth

Member links.

  • Mid-Atlantic Musings
  • Europe Dinghy Moth
  • John Shelley's Moth Boat
  • Blackberry Boatworks
  • Earwigoagin
  • The Madmothist
  • Classic Moth Boat Facebook Page

Upcoming Events

IMAGES

  1. Cole Super-Moth Plans

    classic moth sailboat plans

  2. Earwigoagin: Classic Moth Nationals 2013

    classic moth sailboat plans

  3. Earwigoagin: Classic Moth plans

    classic moth sailboat plans

  4. Earwigoagin: Classic Moth plans

    classic moth sailboat plans

  5. Earwigoagin: Classic Moth plans

    classic moth sailboat plans

  6. Classic Moth Boats

    classic moth sailboat plans

VIDEO

  1. Boat Projects With West Marine #boat #project #diy #shopping #sailingbyefelicia @WestMarineInc

  2. Moth Sailing in Costa del Portland

  3. Coast Cruiser Sailboat

  4. All My RC Model Projects in 2023 : 16 of them!

  5. 2009 Classic Moth Nationals; Weather Mark Rounding

  6. 3d Cad Boat Designs

COMMENTS

  1. Classic Moth Boats

    The Classic Moth is a monohull development class using a modified version of the International Moth rule in effect pre 1969. With an eleven foot over-all length, a maximum beam of 60 inches, a minimum hull weight of 75 pounds, 72 Sq Ft sail area, and very few other restrictions a Classic Moth can be a skiff, pram, scow, skinny tube, dinghy, or ...

  2. Cole Super-Moth Plans

    Little Mae Too Plans 1943. Louis Pillon Plans. Rudders. Cole Super-Moth Plans. Some Building Tips. Some Material Sources. Europe to Europa. Wax On or Off. Sail Cleaning Tips.

  3. How to home-build a Moth

    Wet out a piece of 200g plain weave on the board, wet the top of the deck foam and lay foam board on top on top of the plain weave. Wet the bottom of the foam and lay 200g biax on that. Lay Peel Ply on top of all the exposed carbon and then vacuum bag it. Test fit the deck again to make sure it is still a good fit.

  4. A Tale of Two Classic Moth Boats

    Classic Moth Boats are a wooden boat builder's dream project. You might know us for building our Penobscot Wherries, Maine Whitehalls, and the Catspaws. ... Classic Moth Boats are singlehanded racing sailboats that have their roots in American boat design. First created by Joel Van Sant in North Carolina, the racing beauty packs impressive ...

  5. Earwigoagin: Crosby Classic Moth "Skimmer" Plans

    No reason these plans couldn't be modified to substitute the sit-on-deck with a small cockpit. Also, to jack the sail-plan up higher, the rule of thumb for our current Classic Moths is a 17' (5182 mm) mast length with the 15' (4572 mm) luff length of the sail, leaving approx 2' (610 mm) from deck level to gooseneck. To download: Hover the mouse ...

  6. Classic Moth Plans: Offsetts for Zippy Design

    Plans de voiliers classiques Moth, Dériveur classique Moth. There are two "wide-body" Classic Moth designs currently kicking around, the round-bilged Titan, an American design, which is featured in this header photo, and the French Proust design which I profiled in this post. The Proust design is a simple, v-bottom shape and should be easy to ...

  7. Moth (dinghy)

    The Moth is a small development class of sailing dinghy.Originally a small, fast home-built sailing boat designed to plane, since 2000 it has become an expensive and largely commercially produced boat designed to hydroplane on foils though many are still built at home, typically at much lower cost.. The pre-hydrofoil design Moths are still sailed and raced, but are far slower than their foiled ...

  8. Earwigoagin: Classic Moth plans

    The Classic Moth is a short hull and a light hull. At the Gen2 (higher performance racing) level, the Classic Moths are challenging craft to sail but very rewarding at the same time. A Laser is like an aircraft carrier compared to the more twitchier Gen 2 designs, the Mistral, Energizer, Tweezer or even the Shelly.

  9. Moth 11 Plans

    Length 3.35m. Designer: Paolo Lodigiani. Chine hull, Stitch & Glue construction. Building Skills: Amateur. The origins of the Moth class go as far back as 1930 and the basic idea - very similar to the Ten footer, was to allow with very small boats freedom of creativity by the designers. In more than 70 years, the success has been enormous and ...

  10. Classic Moth Boat Association

    Classic Moth Boats are a class of small fast singlehanded racing sailboats that originated in the US in 1929 by Joel Van Sant in Elizabeth City, NC. The Classic Moth is a monohull development class...

  11. Scow Moth Designs

    Perverted Moth: A high tech remake of bunyip from a pro-designer, complete plans in carbon / foam. And a lot of informations from various forums where the design path went in the 1980's, after the skiffs dominated the race scene and practically no scow won a major race.

  12. Dorr Willey Project

    For Dorr-Willey Official Replica Moth Plans: Museum of the Albemarle - Hwy 17 South - Elizabeth City, NC 27909 - (919) 335-1453. I launched my 106-pound Moth, TOMAHAWK, July 6, 1991. ... Classic Moth Boat Facebook Page; Upcoming Events. Feb 24. 2024 Gulfport FL - Classic Mothboat Mid-Winters .

  13. MOTH

    MOTH. MOTH has nothing to do with the extreme modern Moths which fly on the water supported by foils. It has been conceived in the spirit of the Classic Moth Boats and in accordance with the class rules as an enjoyable and fast boat. Although having a narrow hull (with less than a 90 cm waterline beam) and designed so as to minimize wet surface ...

  14. A gen II classic Moth

    Actually Richard, the U.S. Classic Moth builders are mostly building in 3 mm ply (even though the plans call for 4 mm). As with any racing sailboat, you just have to figure where the stresses are; in this case we reinforce the floor of the tub cockpit - some just doubling up the ply, some adding cedar strips, some with glass or carbon cloth.

  15. International Moth Lowriders UK

    Low-life Sailing. The "International Moth Lowriders" are the original non-foiling International Moth sailing dinghies. These dinghies are fast, agile and diverse in nature, each year a new design and iteration was revealed by some of the most forward thinking boat designers of this century. Click more below.

  16. World Sailing

    World Sailing - Moth is the official website of the International Moth Class Association, a high-performance sailing class that features hydrofoils and foiling techniques. Learn more about the history, events, rules and news of this exciting and innovative sailing class.

  17. History

    The moth class association that had originated in the US was now truly an international organization. Being a development class, the moth has evolved from a hull in the 1930's that could best be described as a heavy, narrow scow or a blunt nosed skiff, (weighing about 50 kg) to today's remarkable foilers with hull weights of under 10 kg,.

  18. International Moth Class Association

    The international Moth Class is the fastest one Person Dinghy in the World. Key Facts: Maximum Length: 3.355 m. Maximum Beam: 2.250 m. Total Weight: Unrestricted (~ 35-40 Kg) Maximum Sail Area: 8.25 m². Optimum Skipper Weight: 60-80 Kg.

  19. Some Building Tips

    Help For Classic Moth Builders And Designers. Achieve a hull weight between 75 and 80 pounds. This is fairly easy to accomplish in any one of 4 basic constructions. Choose a construction that is compatible with your building skills and hull shape Both the 1/4 and 1/8 ply constructions will require a light, but strong frame system.

  20. Design idea for a classic moth

    Join Date: Oct 2008. Posts: 56. #7. 03-30-2017, 05:44 PM. Re: Design idea for a classic moth. Your waterline at 265 lbs. shows that you are not floating on the full 11 feet allowed, i.e. a floaty design of approx 10 feet waterline length. You could: 1. Reduce the waterline beam. or 2. Reduce the rocker. or 3.

  21. Building a Classic Moth

    Re: Building a Classic Moth Glad to see you guys reviving was was (still is) an exciting development class. I was a Kiwi Moth designer and builder in my youth. My most controversial Moth was an inverted "V" bottom scow type, which was declared legal because the center line was still 'immersed' at rest, i.e. it was not a 'catamaran'.