I. PHRF Rules and Regulations

  1. Each yacht owner must file a DYC PHRF Rating Certificate with the DYC Race Committee in the form approved by the DYC Race Committee. Rating Certificate Forms can be found on the DYC website ( Yachts for which a DYC rating has not been issued shall be ineligible to compete in DYC races until a Rating Certificate is filed and a rating assigned. Any changes to a boat’s equipment or configuration as documented in the yacht’s Ratings Certificate on file with the DYC Race Committee shall require submittal of an updated DYC PHRF Rating Certificate.

  2. The Chair of the Race Committee or any other interested party may protest any boat that participates in one or more DYC races in contravention of the boats’ equipment or configuration, as documented in the boat’s Ratings Certificate on file with the DYC Race Committee. No specific form of written protest is required, but the protest must set forth with specificity the facts giving rise to the protest and the date(s) of alleged violations. Upon receipt of a written protest, the Chair of the Race Committee shall appoint a Hearing Panel to hear the protest. The Panel shall be chaired by the DYC Ratings Representative and shall also include three skippers/owners of DYC PHRF rated yachts that are not usually involved in the same racing class as the protested boat. The Panel shall conduct a hearing and decide the protest by issuing a written decision determining whether, how and when the violations alleged in the written protest occurred, and also including a recommended penalty for any violations which are determined to have occurred. All interested parties shall be given an opportunity to be heard during the hearing, including the opportunity to present witnesses and give other pertinent evidence concerning the alleged violation. Based upon the written decision and recommendation of the Panel, the protested boat may be assessed a penalty by the Chair of the Race Committee which may, in the discretion of the Race Chair, include (a) disqualification in one or more races, or (b) an elapsed time penalty in one or more races, and/or (c) a place penalty in one or more races. In the case of repeated or flagrant violations, the boat in question may be disqualified in all races in all series for the racing season.

  3. DYC PHRF Handicaps display three different handicaps denoted by one of the following:

The base handicap is an estimate of the speed potential of a production or standard sailboat equipped for racing. The base handicap is determined for a boat in “as-built ” or designed configuration with assumptions stated in each section below.

The DYC Jib & Main fleet PHRF handicap is a handicap adjustment that reflects the speed potential of a boat that races without deployment of spinnakers as described in the “Jib & Main Cruising Fleet Handicap” section

  D. If necessary, these handicaps are then adjusted according to application of the following sequence of adjustments:

    1. “Engine/Motor and Propeller Adjustments”
    2. “Hull/Ballast Changes” and “Interior Modifications”
    3. “Mast and Boom Adjustments”
    4. ”Sail Assumptions and Adjustments”
    5. NSpin: Ratings adjustment applied when vessel competes in the Jib & Main “cruising class” fleet per the “Jib & Main Cruising Fleet Handicap” section
    6. Other: Other applicable ratings adjustments as detailed in this document

  1. Each handicap is determined by the DYC PHRF Ratings Chair and then reviewed for approval by the DYC Race Committee.

The handicap is used for scoring a race and determining a finish position. It is unique for each boat, and reflects modifications made to hull, rig, and sail plan which are made to enhance the boat’s designed speed potential. Hull, sail plan, rig and interior modifications to the standard production boat each carry an adjustment to the base handicap. DYC PHRF understands that modifications to the standard production boat are made so it sails faster through the race course. The DYC PHRF is therefore adjusted to eliminate an increase in speed potential of a modified boat when compared to the standard version of the boat.

II. Sail Assumptions and Adjustments

    A. Undersized Sail Plan

Credits are not given for a reduction the designed sail plan.


     B. Jib / Genoa Adjustments

     1.  LP Adjustment

Base boat assumption: 155% genoa (unless only a non-overlapping sail can be carried). Otherwise LP adjustments are applied as follows:

For a headsail to be rated as a spinnaker, the mid-girth must not be less than 75% of the foot. Any headsail with a mid-girth less than 75% of the foot shall be handicapped as a Genoa.

    2. Roller Furling Headsail Adjustment

An adjustment for roller furling is only applicable to a boat with an optional or aftermarket roller furling headsail. Other than a storm jib and spinnaker, no other headsail may be used for any race or within a DYC race series. Owners must supply data about their furled headsail in the boat’s DKC PHRF Certificate. The standard Roller Furling Headsail Adjustment for DYC is:

A boat with a roller furling headsail can elect to utilize more than one sail during a race or race series by declaring their intent to do so on the DYC Rating Certificate. If a roller furling boat elects to have the ability to change their sail during a race or series, the Roller Furling Headsail Adjustment shall be modified:

Once declared on the rating certificate, the modified roller furling adjustment shall remain in effect for the entire race season including all races and race series.

On a downwind leg, a roller furling boat shall roll rather than drop their headsail except when:

  C. Mainsail Adjustments

    1. Mainsail Roller Furling Adjustments

   2. Mainsail Girths and Area Adjustments

D. Spinnaker Adjustments

  1. Spinnaker assumptions:

Boats shall be handicapped based on the largest spinnaker carried. If the boat carries a spinnaker pole, it will be assumed that the largest spinnaker is tacked to the pole

  1. Spinnaker Rig Adjustments

       4.  Bow Sprits for Asymmetrical Spinnakers

Asymmetrical spinnaker configuration  

   Adjustment    (sec/nm)  

Part of the standard boat


Asymmetrical tacked to the bow or spinnaker pole


Bow Sprit Length extends standard J length between 12” and J+10%


Bow Sprit Length extends standard J length by 20%


Bow Sprit Length extends standard J length by   30%


     5. Code 0

    E. Jib & Main Cruising Fleet Handicap

Rig Type

Adjustment (sec/nm)

Normal masthead rig


Fractional rig 15/16 or more


Fractional rig 7/8 to 15/16


Fractional rig less than 7/8


  1. Mast and Boom Adjustments

Rig Height Adjustment (I and P changed)

Rig Height Increase

Adjustment (sec/nm)

0.5 - 3%


3.01 – 5%


5.01 – 7%


7.01 – 9%


9.01 – 11%


11.01 –   13%


13.01 –   15%


      A. Reduction in Rig Measurements

     C. Exotic Standing Rigging Adjustment (new December 2005)

      D.  Boom Length Adjustment

Rig Length Increase

Adjustment (sec/nm)

0.5 - 10%


10.01 – 20%




  1. Engine/Motor and Propeller Adjustments

  1. Propeller Assumptions: The boat has one of the following:

  1. Inboard Engine/Motor and Propeller Adjustments

  1. Sport Boats

The following four criteria are guidelines to define a sport boat.There can be exceptions, one way or the other, from these criteria. In summary “if it looks like a duck and quacks like a duck, it might be a duck.”

•        Displacement-Length Ratio less than 100

•        Upwind Sail Area-Displacement Ratio greater than 30

•        Downwind Sail Area-Displacement Ratio greater than 75

•        A sprit length greater than 35 percent of J

Sportboats do not follow many of the guidelines used to performance handicap boats. Sportboats are handicapped with reference to an “as presented” configuration, whatever it is. This includes mainsail, jib/genoa, and spinnaker dimensions and areas. The base handicap for sportboats references the class spinnaker. If a change is made to the boat’s standard or class specifications, it must be reported to the DKC PHRF Ratings Chair by filing a DKC Ratings Certificate.

Sport boats do not follow many of the guidelines used to handicap boats. Sport boats are handicapped in their "as presented" configuration, on a case by case basis. This includes spinnaker and jib sizes as well as mainsail girths. The base handicaps will be with the class spinnaker. However, classes like the J/105 and the J/130 have a "jumbo" spinnaker for the base spinnaker for PHRF configuration (which is not the J105 One Design specification).

  1. Hull/Ballast Changes

•        Adjustment will be made on a case by case basis. It is assumed that the modification was made to improve speed.

  1. Interior Modifications

If tables, doors or stoves are removed, it depends on what is removed and the effect on the vessel displacement.