Hebe Jebes 2015 Issue May/Jun | Page 40

FEATURES FEATURES Race HKPN Getting a handicap couldn’t be easier Words Elaine Morgan & Bridget Chan, HKPN Committee The January/February issue of Hebe Jebes saw the beginning of a series of articles on HKPN, the Hong Kong Performance Number. More and more boats are racing under HKPN at Hebe Haven Yacht Club so it is hoped that these articles will both encourage new racers to hit the start line and to explain to more seasoned racers how HKPN really works. such as crew capability, racing experience, age of sails, condition of a boat and hull etc. is almost impossible, so we don’t even try to assess all of these variables. Instead, an initial handicap is normally based, objectively, on the potential speed of a boat. There are many established rating schemes such as IRC and PHRF that can be used to determine the potential speed of a boat through a Time Correction Factor (TCF) and these established rating schemes are a starting point for most handicaps that appear on the HKPN list. A TCF is turned into a handicap by the use of a factor, F (NB this doesn’t stand for ‘Fudge’!). The F factor varies depending on style of boat and is determined by comparing generic types of boat on the HKPN list with ratings that would typically be calculated for them under IRC or PHRF. As an example, Windseeker, under IRC would have a TCF of about 0.904. Using the F factor for Windseeker, a classic performance cruiser, her initial HKPN would be 1054 using a simple calculation: HKPN = 1000 / (TCF x F Factor) The current F Factors on the HKSF website are: DESCRIPTION F FACTOR CLASSIC CRUISERS CRUISERS The HKPN application form can be found on the Hong Kong Sailing Federation (HKSF) website and when complet