International One Metre
Our most popular class sailed in New Zealand and raced in over 30 countries.. The IOM is very lively and fun to sail. The hull cannot exceed 1000 mm in length and the complete boat ready to sail must exceed 4000 gms. Two channel radio equipment is required, one operates the winch the other the rudder.
The class was created in 1988 by Jan Dejmo aided by Graham Bantock and the Technical Committee of the IMYRU (predecessor of IRSA). It has continued to grow steadily since its creation.
- IOM Boat Registration
- NZLIOMNCA Contacts
- NZLIOMNCA Pages
- IOM Ranking
- IOM Class Links
- Classic IOM Class
- IOM Photos
- IOM Knowledge Base
- 3D PRINTED IOM BOATS
- A Guide to Basic Tuning and Sail Setting on an International One Metre
- Boatbuilding
- Building a Plug
- Cheap Alternative Winch
- How Long IS One Metre
- How to Transport My IOM Boat on a Aeroplane By Bruce Edgar
- IOM Repair by Graham Cross
- IOM Tuning
- IOM Wooden Booms
- K2 Jib Setup
- Laser Tank Measuring
- Launching Ramp
- Links to RC Yacht Plans etc’
IOM Events
January 2026
February 2026
March 2026
May 2026
June 2026
July 2026
August 2026
September 2026
October 2026
November 2026
December 2026
IOM News
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2026 Auckland Anniversary Regatta
The sailing instructions for the IOM class have been uploaded. Entries only accepted on the day. cash is preferred. We will be sailing on the Z pier side of the bay, as the Electron class will be using the north pontoon where we usually sail. Any questions please direct them to us. Peter JacobsenWesthaven Radio
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NZL IOM NCA – PRELIMINARY NOTICE OF AGM
The NZL IOM NCA AGM has been scheduled as below: Item Event Starts Ends 1.0 Call for Nominations and Resolutions 19th Dec 2025 11th Jan 2026 2.0 Notice of AGM 12th Jan 2026 8th Feb 2026 3.0 AGM 9th Feb 2026 22nd Feb 2026 4.0 AGM Minutes, incl. Election Results, Resolutions, and Fees Passed 24th
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2025 Top of the South IOM Regatta | Race Officer Report
6th – 7th December | Nelson Radio Sailing Club Sea Breezes almost guaranteed, the Beginning of Summer, the end of the 2025 Calendar Season, Amazing Hospitality and Venue – and of course the venue for the 2026 IOM Nationals… What more reason did you need to be in Nelson for the TOTS Regatta? 33 Sailors
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2025 Top of the South IOM Regatta Results
2025 Top of the South IOM Regatta Best Island, 6/12/2025 to 7/12/2025 Results are after 14 races with 2 Qualifying Discards and 1 Finals Discard Place Sail No Skipper Design Club Total Disc Final Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 F1 F2 F3 F4 F5 F6 GOLD FLEET G 1 28 Erle Williams