PHRF Chesapeake 2011 PHRF Fleet Policies..."Equipment...One Design Ratings will only be provided to CBYRA recognized One Design Classes. In the event that the applicable class rules for a CBYRA recognized one-design class conflict with these regulations, the class rules shall take precedence." Also " design class rules, which limit headsail size, sail materials, or spinnakers do not apply to PHRF, unless the boat is rated as a one design class (italics mine)....PHRF may, when requested by established one design classes, assign a rating to the one design configuration of that class. Each individual boat which desires to be issued a one design rating (ODR), must specifically request an ODR and agree to race only in that configuration in PHRF handicapped races."