Attached is the current - approved - Portsmouth Numbers for our CCBA fleet. 
Also attached is a BLANK Race Spreadsheet  - which includes the FORMULA, which you can also find at: offshore.ussailing.org/Portsmouth_Yardstick.htm
CCBA Race Committee:  David Morrow, Paul Cammaroto, Matt Cruder
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The BLANK form allows you to input 
1. Boat Data including Portsmouth rating can be entered before the race starts in the First File.
Results are entered as boats finish (by hand OR electronically)
3. For the Results... Time in Hours and Minutes is entered in the GRAY section (Only) of the Second File (electronically).
PLEASE... Do not modify the imbedded code in the other areas!
​Note: Results can be worked ashore or on the water as the boats finish! What a concept.