Following much consideration it has been agreed that for all GBR boats who require an Endorsed certificate,we will only accept sail measurement data from either RORC Measurers or sail lofts that are registered with the ISAF/RYA having completed the ISAF IHC (In-House Certification) requirements.  This does not apply to existing rated sails on Endorsed certificates.


Any such loft will have met the ISAF standards required to maintain fairness established through traditional equipment control and certification, but reducing the time and cost of these activities. With the international system of IHC, ISAF can ensure standards and certification apply worldwide. By adopting this in Great Britain it is hoped that the IHC standards will be encouraged throughout GBR sail lofts, and that competitors gain through even better standardisation of measurement.


For the purposes of an Endorsed certificate, an IHC loft may measure a sail manufactured by another loft (irrespective of whether that loft is IHC approved or not), provided that the loft uses IHC measurement processes and a trained qualified measurer. Additionally, the sail shall be signed and dated by the measurer and the name of the measurer and the sail loft shall be permanently marked on the sail.



For more information on IHC and to find out which sail lofts have already met the standards see and for sail lofts looking at becoming IHC registered, contact the RYA .


Sailmakers, for more information please download the PDF below:


In-house Certification (IHC) information for Sailmakers. 

Seahorse Rating Ltd, Seahorse Building, Bath Road, Lymington, Hampshire, SO41 3SE.
Registered in England, Company Registration Number 2041269

Terms and Conditions | Policy and Security | Site Map | Contact Webmaster