We have produced some simple measurement guides for owners*, please see below (PDF format). 

Mainsail

Headsail

What is headsail LLmax?

Spinnaker

Rig (P, E, J, FL, STL)

Running Rigging explained

If you have any queries please contact your Rule Authority, thank you.

*If you need an Endorsed certificate for your chosen events, then data will need to be officially measured, again please contact your Rule Authority about this.