Building
Hulls
Have a look here for a complete list of the major and influential hull designs used in the Moth class in Australia.
- Introduction to organic carbon Moth hulls (HTML page – same window)
- Instructions and plans on how to build a stressed ply skiff Moth hull (PDF file – 1.2Mb)
- Supplement instructions on how to build a stressed ply skiff Moth hull (MS Word – 21Kb)
- Instructions on how to build hardware for the Moth, including foils, masts and wings (PDF file – 109Kb)
- Instructions on how to build a Frizz Moth hull in English from Berthold Neutze (Website – opens in new window)
- Latest 2004 ply hull design shows shape of sides and bottom for a better stressed ply hull, by Phil Stevenson. Use the old method in other articles adapted to full length chines. (MS Excel – 16Kb)
Rigs
In a development class such as the International Moth, skippers are free to develop rigs as is their want. This means that sail plans can be designed to suit a particular skippers weight and other characteristics. The only major restrictions in rig design are: number of sails (1), overall sail area (8 square meters) and luff length.
Over the last five years or so, the dominant rig in Australian waters has been the ‘pocket luff’. This rig differs from the standard bolt-rope rig in that the mainsail has a pocket sewn into the luff to accept the mast and the batten ends locate onto the mast with camber inducers.
Please feel free to have a look an article written by Mark Thorpe about the pocket luff rigs and also some tips on rigging your moth.
Also have a look at Andrew ‘Tassie’ Coxall’s DIY Moth mast article from the 1998 IMCA year book (gif – 166Kb)
