The International One Metre (IOM) is the most popular RC racing yacht in the world and is raced in over 30 countries.

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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.

Although carbon fibre is allowed in the construction of the fin and rudder, construction of the hull must be of either wood or glass fibre. Spars shall be of alloy or timber and the sails are to One Design sizes. 

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The number of rigs is limited to three. This makes the class very popular for amateur builder and many designers have plans for competitive boats. Builders who can supply kits for home completion or completed boats are plenfiful.

The IOM class is managed by its own International Class Association, IOMICA. Please visit the class website at