The current MSC Rules can be found at:

http://mymsc.ca/Documents/CMSWSwimmingRules20081207.pdf
http://mymsc.ca/Documents/CMSWReglements20081207.pdf

These rules were approved by the MSC Board on December 7th, 2008.

The above rules should be used for all Masters Swimming Competitions in Canada.

http://mymsc.ca/Documents/Open_Water_Rules_May_10_2009.pdf
http://mymsc.ca/Documents/Natation_Eau_Libre_10_Mai_2009.pdf

Appendix C: Masters Swimming Rules in the SNC Rule book (2005) have been superseded and should not be used for Masters competitions in Canada.

FINA Masters Swimming Rules 2005 - 2009 (a list of differences from the FINA Swimming Rules)