Do I need to have my boat weighed & measured?
No, IRC is a self-measurement system and we also hold standard hull data for hundreds of production designs. There is thus no general requirement for an owner to have the boat officially measured or weighed unless either he chooses to do so, or his Rule Authority (ie. his local IRC body) and/or an Organising Authority for a race requires official measurement, generally resulting in an endorsed IRC certificate.
To arrange to have your boat weighed and measured please contact your local Rule Authority with details of the boat, they will let you know what is required and put you in touch with the local measurer. For boats in the UK this is the RORC Rating Office tel 01590 677030