The Provisional Notice of Race for the 41st Annual Opera House Cup Regatta, August 18, 2013 is available here.

CRF RATING --- All OHC participants must have a current CRF rating.   Your CRF measurement form must be received by Nantucket Community Sailing prior to the regatta.    In order to obtain your CRF rating, complete the CRF application form and submit it to:
  CRF Group
   PO Box 319
   Mystic, CT  06355
   email: classicratings@gmail.com
The CRF application form can be downloaded here.