Building, Registration and Measurement

Hulls

Have a look here for a complete list of the major and influential hull designs used in the Moth class in Australia.

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)

General Moth Info


Length overall 3.355 m
Beam 2.250 m
Max. luff length 5.185 m
Max. mast length 6.250 m
Hull weight Unrestricted, general weight range 10-20kgs

Sail area

 8m
Yard Stick 104
Restrictions Multihulls, trapezes, moveable seats and sailboards are prohibited.
Optimum skipper weight 60-80kgs
Advertising Category C (Unrestricted)

 


 

 

 

 

 

Measurement & Registration Process

  1. The first step involves getting an International Class Fee (ICF) receipt for your boat. This is a levy imposed by ISAF on all new international class boats that are built. To get your receipt, send a cheque to IMCA Australia for AUD $50. You can either make the cheque out to 'IMCA of Australia' and send by mail to IMCA Australia along with your personal and boat information, or alternatively contact Luka Damic for EFT details.
  2. The IMCA of Australia Registrar will then send you:
    a) the ICF Receipt Form with your ICF number;
    b) the blue ICF sticker for your boat (also called the ISAF Plaque) which can be stuck on the front bulkhead of your boat near the mast stump;
    c) an IMCA registration form (for you) if you are not a member;
    d) a list of IMCA measurers; and
    e) a copy of the International Moth Rules.
  3. Next, have your boat and sail(s) measured by one of the IMCA measurers.
  4. Armed with your ICF number and completed Measurement Form, visit the Measurement Certificates page on the Yachting Australia web site and download the New Boat Registration Form.
  5. Complete the New Boat Registration Form and send to the Yachting Australia together with a cheque for $35 as per the instructions on the YA web site.
  6. Yachting Australia will update the class records on the registration database, allocate a sail number, issue the new Measurement Certificate to the owner and send a copy to the class association.
  7. When the boat is sold, please pass the measurement certificate on to the new owner and direct them to the Measurement Certificates page to download the Transfer of Ownership Form .
  8. Finally, ensure that the ISAF plaque is attached to your boat and that the sail number (including the letters AUS) are indelibly marked near the transom on the port side of your boat, as the registration is not valid without these.

Don't be discouraged by the apparent complexity of this procedure as there are no real problems along the way. The YA is required to keep records of all international classes - hence the many steps. Should you require any further information, please do not hesitate to contact:


Christopher Dey (NSW) Luka Damic (NSW)
Ph: 02 9351 5979 (BH)
Email: chris@moth.asn.au 		Ph: 0421 639 965
Email: luka@moth.asn.au

Forms

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