Here are the charts we’ll be using for the races this year. There are only a few changes from last year. These charts are based, of course, on the PYS figures published by the RYA

Classes and PYS Numbers – SCSC 2012

Class	PYS
Tasar	1.018
Flying Fifteen	1.022
Laser Standard	1.085
Wayfarer	1.101
Laser Radial	1.11
Laser 4.7	1.175
Day Boat	1.2
Ette	1.246
Laser Pico	1.265
Vagabond	1.3
Topper	1.301
Opi	n/a

You can download the complete chart templates (with ranking formulae included) in .xls format for MS Excel here:
SCSC Senior Multi Class Races 2012 – Including formulae for calculating rank (113k, .xls)
SCSC Mini Multi Class Races 2012 – Including formulae for calculating rank (75k, .xls)

You can download the complete chart templates (with ranking formulae included) in .ods format for Libre Office / Open Office here:
SCSC Senior Multi Class Races 2012 – Including formulae for calculating rank (33k .ods)
SCSC Mini Multi Class Races 2012 – Including formulae for calculating rank
SCSC Mini Multi Class Races 2012 – Including formulae for calculating rank (19k .ods)

Here is how the calculations are made:
Readme Instructions for Time Sheets 2012 (2k, .rtf)