Windmill Class 

One Design

Racing Dinghy

The Windmill is a 15 1/2 foot, 2-person racing dinghy designed by boat-builder Clark Mills in 1953. Having designed the Optimist Pram in 1947, Clark saw a need for a 2-person high performance dingy that can be inexpensively constructed by amateur builders. The class has since evolved with the times to allow fiberglass construction and aluminum spars, yet both wooden and fiberglass Windmills remain equally competitive. The Windmill is a born racer. Its narrow, hard-chined planing hull provides high performance. Being a non-trapeze, non-spinnaker boat makes the Windmill accessible to a wide range of sailing skills.

Specifications - The minimum hull weight is only 198 pounds! This allows the boat to be carried on a light duty trailer & towed by a compact car. The full set of Windmill specs (rigging, sails, etc...) can be found at Specifications. Some of the basic numbers for the Windmill are:

Length Overall 15' 6"
Beam 4' 9"
Sail Area 119 sq. ft.
Draft - Board Down 4' 2" / Board Up 6"
Mast Height 20' 3"
Portsmouth Ratings:
    Level 89.7     Light air 92.3    Medium 91.4     Heavy 86.4