Is there an excel spreadsheet out there to work out the sail area, I know all the formulas but has one been produced to easily allow tinkering to make sure you say within the alloted areas when adjust ing jib to main ratios.

thank you in advance

Hi David,

The spreadsheet and other class documents can be found on the International Marblehead Class website.

https://www.marbleheadclass.org/class-rules/6-measurement

Cheers

Brad

This sounds like a slippery slope David!

Thank you Brad, I fould that but unless i am stupid ( don't say anything anyone ) there is not a spreadsheet that you can tap in all the numbers for it to work out the sail area. I would have thought the measures had one so they do not have to use a calculator each time. there are lots of boxes but no way you can put the A,B,Qand R measurements in to then allow you to work out the excess sizes. Xx, Yy, etc and then it add them together

@ mike cooke I am trying to get a massive jib like on the mini 40 just how you would ( not !!!)

Hi David,

If you open the 2020 Marblehead Measurement and Certificate file, you will see a list of tabs/sheets to open.

Find the Rig Sail Measurement form and this will open up the spreadsheet that allows you to play with numbers and ratios while seeing if the area fits within the permitted 0.5161m^2 allowed indicated in the lower box

Cheers

Brad

Thank you Brad, it was the only one i did not open,