Two decades ago, the first International Rating Certificate (IRC) annual Congress was held in London following IRC’s ...

Two decades ago, the first International Rating Certificate (IRC) annual Congress was held in London following IRC’s ...

All valid IRC boat data is available in digital format from the search below to enable sailors and race organisers to check boat configurations. Please enter ...

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 ...

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 ...

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

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) ...