Owners and competitors will need to make sure that their boats have a valid measurement certificate and all their sails are measured before the start of a European or World Championships organised by ISMA.
The Event Measurer is there at ISMA Championships to check that certificates are valid and that sails have been measured – competitors must not assume that the measurer will have the time to carry out any initial measurement of boats or sails that are not already measured.
Please note that for a valid measurement, the Class Rule requires that any sail first measured after 1 May 2010 must have an ISMA sail royalty label. Labels can be obtained from the ISMA Secretary, Helena Paz, by emailing ismasecretary@6metre.com (see 6mr.org.uk/sail-labels/)
The Royal Yachting Association has approved a number of measurers for the class, any one of whom is authorised to measure Six Metres in the UK. As of January 2024, the measurers available in the UK are:
| Surname | First Name | Town | Mobile Number | Email address |
| Chivers | David | Brightlingsea | 07860106641 | david@sarvid.com |
| Kershaw | Ken | Southampton | 07979593127 | ken@kershawtechnical.com |
| Owen | Tom | Fowey | 07976403120 | tom@classicyachtrestoration.co.uk |
| Yates | Andrew | Isle of Wight | 07887518920 | andrew.yates70@gmail.com |
All of the measurers above can also measure your the sails for your Six Metre. In addition the RYA has no less than 90 approved sail measurers, any one of whom is authorised to measure sails for Six Metres. Please contact the RYA for further details of a measurer near you through the RYA website.
British International Six Metre Association 