Handicap and Rating Rules all attempt to level different boat sizes, shapes, weights, and speeds. When wind direction, wind speed and wave heights are thrown into this complex mathematical computations, we learn that different designs simply perform differently in different conditions. Just remember, the keyword is "attempt!"
Handicap and Rating Rules
Learn what they are and how they work
Lake Michigan Performance Handicap Racing Fleet (LM-PHRF)
Features: easy, quick to get handicap, requires some measurement, easy to understand, handicap determined by a Committee based on performance of the boat and its sisterships; cheap, started in late 1940’s.
Features: sophisticated, requires some or all measurement, quick to get rating if sistership on file, if no sistership on file it requires full measurement in and out of the water, takes some reading to understand, computer 3D modeling based Velocity Prediction Program determines boat’s rating, moderate to expensive, evolved from the “Measurement Handicap System” which began in 1976.
Offshore Racing Rule-ez (ORR-ez)
Features: ORR-ez is a hybrid Velocity Prediction Program (VPP), with both scientific and observed factors used to create handicap ratings.
Great Lakes Multihull Racing Association (GLMRA)
Features: Easy, PHRF-based, Quick to Get Handicap, Easy to Understand, Cheap.
Midget Ocean Racing Club (MORC)
Features: Easy, Designed for Cruising Boats Up To 24’ In Length, Cheap, Founded in 1954.
International Rating Certificate (IRC)
Features: Easy, Requires Moderate Measurement, While Measurement Data is Public - a Secret Committee Makes Adjustments to Boats Handicap, Takes Some Reading Yet Easy to Apply, Moderate Cost, Founded Early 2000’s.
North American Portsmouth Yardstick Ratings (Portsmouth Numbers)
Features: Easy, Quick to Get Handicap, Fleets Nationwide Turn In Race Results Annually That Recalculates the One-Design Handicap Number, Intended for Small One-Design Classes, Inexpensive, Introduced in the 1950’s.
High Performance Rule (HPR))
Features: For the longest time boats sat in the water under sail, as lighter materials are developed, deeper keels and bigger sail plans for same size boats has more modern designs surfing and planing sitting on top of the water (Sportboats). Other handicap rules do not take in account these factors. Cost not determined yet. Founded 2012
LMSRF Measurement Rules Committee
See "Contact Us" above for the listing of the current members of the LMSRF Measurement Rules Committee. You may contact them with questions or for guidance.
LMSRF Measurement Rules Committee Articles
July 2012 - Handicap Racing on Lake Michigan
by Tom McIntosh, LMSRF Measurement Rules Committee Chair
July 2012 - Notes on the Performance Handicapping of Monohull and Multihull Sailboats
by Paul Ansfield, LMPHRF Executive Director and Handicapper
July 2012 - Offshore Racing Rule
by Peter Reichelsdorfer, LMSRF Measurement Rules Committee Member