IRC 2025 Rule text published - Following ratification at the IRC International Congress, the IRC Rating Technical Committee ...

Two decades ago, the first International Rating Certificate (IRC) annual Congress was held in London following IRC’s recognition as an World Sailing International Rating System. Twenty years on, in ...

Rules published here apply from 1 January 2025 (1 June 2025 in countries where certificate validity is 1 June to 31 May). NOTE: Final rule wording may vary slightly from the rule changes document – ...

Seahorse – the official magazine of the Royal Ocean Racing Club – continues to be the world’s foremost sailboat racing magazine. All IRC certificate holders can enjoy an automatic subscription to ...

mmoc is defined by ISO 12217-2. It is the anticipated minimum weight that the boat will be when in use.

The following IRC Rule changes were approved by Congress in October 2017: ...

b) IRC Displacement is directly related to Boat Weight. Any addition to Boat Weight will be reflected by a relative increase in IRC Displacement. c) The calculated value of DLR is rounded to the ...

We have noted that a significant number of Notices of Race invoke IRC by simply requiring a ‘valid IRC certificate’. With an increasing number of boats now travelling around the world to regattas, ...

As you may be aware, apart from the trial certificates which can be run for a currently rated boat, we also offer trial certificates for new boats and designs. To avoid any grey areas, we will be ...

A boat is ‘on a beat to windward’ when the course she would sail to finish as soon as possible in the absence of all other boats is a close-hauled course or above. For the purposes of rules 18.1(a) ...