IRC weighing & measurement

IRC is a self measurement rule and there is no requirement to have your boat officially weighed or measured for a Standard IRC certificate.

However, if you would like your boat weighed and/or measured, and/or require an IRC Endorsed certificate, RORC have several measurers around the UK as listed below. Please contact us with details of your boat and requirements and we will get in touch with you.

Many of you will already know your local measurer, but please contact us first to discuss your requirements. This is particularly important if you need an Endorsed certificate and helps to avoid misunderstandings and possible costs for more than one trip by the measurer!  Please note that not all RORC measurers are RYA qualified to measure sails for Endorsement. Please check with the Rating Office if you need sails measured.

Please note that when weighing a boat the bow and stern overhangs (BO, SO, y, h, x) will also be measured.

For more information on the IRC Rule and measurement, please see

If you have not yet revalidated and have made changes to your boat, or are planning to weigh your boat before racing, please submit the revalidation application with full details of what you have changed or a note that you will be having the boat weighed/measured  We can then hold the application pending measurement.

If you hold a current valid IRC certificate and are having your boat weighed for the first time of the season you will be eligible for a free amended certificate. Please do not apply for an amendment; the Rating Office will contact you.


Royal Ocean Racing Club Rating Office
Seahorse Rating Ltd
Office M, Anchor House, Bath Road Lymington, Hampshire SO41 3YJ UK
+44 (0) 1590 677030

UK Measurers

Paul CunninghamSW - Torbay
Roger IrvineSW - Plymouth
Mel SharpSW - Falmouth
Ian BrahamPoole/Dorset
Robin MilledgeSolent - Lymington
Adam CowleySolent & NW England
Peter Wykeham-MartinSouth - Portsmouth/Gosport
Robin StevensonSouth - Brighton
Mike RichardsHamble/Southampton
Andrew YatesIsle of Wight
Stephen ColemanEast - Kent
David ChiversEast - Brightlingsea
Peter CockayneEast - Ipswich
Andy PeacockNE - Yorkshire
Mark HomerScotland - Clyde
Andrew NapperNW - Liverpool
Eifion OwenN Wales - Pwllheli
Chris SealS Wales - New Quay
Roger DunstanS Wales - Cardiff
John StewartNI - Bangor, Co Down
Johnny MulhollandNI - Bangor, Co Down
Martin OzardChannel Islands