Getting All Mothy Up In Here
What in the world is that. Is that a boat? Is that a flying dirigible? Nay! It’s a moth! A moth is a kind of small, FAST, single-handed sailboat made for racing. Originated some time in the early 1900’s in North Carolina, the classic Moth can be any number of things: skiff, pram, scow, dinghy, basically anything within the restrictions of 75lbs, 72 Sw Fr sail area, and a maximum beam of 60 inches. What David Valham has done here is to make a Moth into a superior flying machine that’s riding on the edge of boatness, appearing to nearly take off!
Now, modern Moth boats look very similar to this Valham design, with the exception of a few factors: while the usual Moth has a couple of “wings” for the pilot to sit on, the Valham design turns these into actual wings, adding to the balance of the boat, adding to the speed. Furthermore, there’s a bunch of littler additions that make this lovely boat a Moth to behold:
Flexible Wing Mast
Lighter Beem Shape
Ergonomic Sitting Area (this is the wings)
Angle of Attack Indicator (rudder)
Rigged Handles for Easier Transport
Dihedral Angle on the Front
Higher Lifting Point
Double Wands on the Front
Now take a look at this bad boy, and tell me if you’d dare drive it. Part of the fun of this sport is the skill involved in keeping the boat upright. Learning how to run one of these splendid looking insects involves a lot of crashing and swimming. But! Once you’re up, you’re OFF!
Designer: David Valham






















7 Comments »
mif991 says
I don’t know a thing about sailing but it looks like you did your homework and it looks sweet, swift and sleek. Your model does justice to your beautiful sketchwork. Congrats. I hope you do well with it.
Confucius says
Nice work, good to see on here.
khidr_313 says
Very sweet! 3D printed! awesome! Very nicely executed!
kay warner says
Dude, how does a vertical sail give you vertical lift???! Are you sure that wing will generate lift???! Google ‘wing-in-ground effect’ genius.
david valham says
dude… the sail is not vertical (as you can se in the pic.), it leans to the windward side approximately 10 deg… have you tried to look how a windsurfer manages hi sail? and yes i know what ground effect is… you do obviously not. I don´t google for info, I read books (Understanding Flight)… google-genius.
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