As a result of having the complete matrix of predicted boat speed at various wind strengths and directions, ORC rating systems can therefore provide a variety of methods to calculate corrected time. Scoring options offered include the most sophisticated, where the boat's performance is taken in consideration depending on the wind conditions, but also simple scoring options using single number scoring coefficients in either Time on Time or Time on Distance formats. Simple scoring options also include the Triple number system that uses three different Time on Distance or Time on Time coefficients to be used in light, medium and heavy breezes. All simple scoring options are also given for either Windward / Leeward racses (50% beat, 50 % run) or Coastal / Long distance races (Different percrentages of beat, reach and run).

This wide variety of scoring options may look complex, but it is actually one of the strength of the ORC rating systems to offer race managers a variety to choose from that best suits their fleet, their race type and their race conditions. The factors race managers should consider when choosing which scoring type to use include:

  • type and level of the fleet - better to use simple systems for club-level racing
  • type of race- windward/leeward or an coastal/offshore race
  • the difference between fastest and slowest boat - important to know how to divide classes and to combine entries for overall prizes
  • prevailing weather condition - are they steady or variable during the race
  • tradition of particular type for eg, Time on Time or Time on Distance
  • is there current in the area, and can it be predicted

Because the ORC VPP can predict the performance potential of different boat types, it can rate them fairly against each other in any range of wind conditions and course types. In this way Performance Curve Scoring can make handicap yacht scoring significantly more fair than any single number scoring approach.

When used correctly, the differences in corrected times calculated by ORC scoring options are often very small. In fact, it is not uncommon in a typical ORC Championship event of 7 to 9 races to have several ties in corrected time. This shows that these close margins reflect the differences in how each team reaches its potential to race the course in their boat type, and not how the boat itself rates in the handicap system. The use of ORC science thus equalizes all teams so that the race becomes a measure of their own potential to win.


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