ORC International Certificate


ORC International certificates comes in four A4 pages. The first page gives a general presentation of the boat with its rated boat speeds, in addition to the main hull, propeller, rig and sail measurements.

It also contains information needed to enter the race like crew weight, limitations on use of sails, and stability index with the rated righting moment.




   Page 1




   Page 2




   Page 3




   Page 4

The second page is presenting scoring options in two sections: default scoring options that are present on each certificate and other scoring options that are selected for use by the relevant National Rating office. 

The third page is showing a detailed list of measurements of the Hull and appendages, propeller, rig, flotation, stability, and the measurement inventory. The fourth page is reserved for measurements within the sails inventory. 

Place the cursor over different parts of the certificate page for a brief explanation. More details are given in the measurement and scoring sections, while complete definitions can be found in the appropriate rules documents.


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This is a space for the Rating Office logo. ORC Rating Offices are established worldwide in each country that has active offshore racing. Rating offices have several functions, including supervising the measurement and rating of yachts, supporting ORC racing by administering to their national fleets, and issuing ORC certificates.

For countries where a National Rating Office is not yet established, the central ORC Rating office can give support by issuing certificates.


There are three types of ORC International certificates that may be valid at the same time for any boat: general with full crew, Double Handed, and/or Non-Spinnaker, labelled clearly in this box. These will have their GPH, CDL and ratings on Page 2 calculated specifically for that type.

Header on the ORC International Double Handed Certificate

Header on the ORC International Non-Spinnaker Certificate


This is the list of all the measured sails recorded for determining a boat's predicted speeds and ratings, and includes at a minimum the largest of each sail type in the inventory. Each sail's measurements, area, measurement date, name of measurer, manufacturer and material are shown for each of the following sail types: Mainsail, Headsails (set on the forestay and set flying), Symmetric spinnaker, Asymmetric spinnaker, and Mizzen and Mizzen staysail.

Any Headsail set flying and any Asymmetric spinnaker between 75-85% SHW/SFL are required to be recorded in the sails inventory.


ORC Reference number is a unique number identifying that certificate and may be retrieved in the ORC database available at the ORC Sailor Services.

There is an issue date as well as a VPP version used together with the latest date for the validity of the certificate.  

A boat shall have only one valid certificate at any one time. The valid certificate is the last one issued.

ORC Certificates are valid for one year. This is because the VPP software calculations are updated yearly based on the ITC’s latest research of aero and hydrodynamics, as well as improvements made from analysis of race results and boat performance during the racing season, and submissions made from ORC Nominating Bodies.