Moth

Class History

The International Moth has one-design roots, but 30 years of developmental rules have metamorphosed the early Moth's 110- pound, flat-bottomed hull into a 22-pound speed machine. Today's 11-foot single-handed Moths foil in 6 knots and kiss 30 in heavy air. The current design earns its international name—it is the fusion of the American Moth Boat, Australian Inverlock, Swiss-inspired hiking wings, and a hydrofoil from the UK. moth_sailplan.gif

Boat Specifications

Length overall: 3.355 m
Beam: 2.250 m
Max. luff length: 5.185 m
Max. mast length: 6.250 m
Sail area: 8 m

Moth

7/14/2014

Moth Systems3" Wire Block - 30016mm Double Block - 40616mm Double Block - 40616mm Single Becket Block - 40529mm Pivoting Lead Block - 39629mm Pivoting Lead Block - 39616mm Triple Block - 40829mm Carbo Fixed Head Block - 35216mm Single Block - 40457mm Carbo Ratchamatic - 262540mm Carbo T2 Lashing Block

Link to Larger Image

Downhaul

Due to strong apparent wind caused by the speed of foiling, flattening the sail with the downhaul makes the boat faster and easier to control. 6:1 double-ended downhauls are common, but racers like Bora Gulari, '09  & 2013 World Champ, have used Harken 16 mm blocks to create even higher purchases.

Vang

Vang tension is critical in generating the power to lift off. The 16:1 double-ended system also allows for "vang sheeting" upwind to control shape and twist.

Mainsheet

The Ratchamatic® ratchet disengages under light loads to allow fingertip control. Ratchamatics and T2™ Blocks have strong ball bearings on curved races to make secondary bearings unnecessary-which means adjustments are lightning fast under any load. Many racers add an additional block for a 4:1 system to reduce sheet load.

Moth Top View

Link to Larger Image

  • United States
  • Australia
  • France
  • Italia
  • New Zealand
  • Polska
  • Sverige
  • UK