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SRS

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SRS (sailing)

Svenskt Respitsystem (SRS), formerly known as Leading Yard Stick and Lidingö Yard Stick (LYS). SRS is an empirically based handicapping system used in yacht racing in the Nordic countries. The handicap system was developed in 1970 by the Swedish yacht designer Lars-Olof Norlin. He based the system on regatta results from the Round Lidingö Race. His own design, Allegro 27, was used as the benchmark and is by definition assigned a LYS value of 1.00.

Every yacht model has a SRS number based on results in regattas or, for new models, based on a velocity prediction program (VPP) as in IMS and some other hadicapping systems. The SRS number is multiplied with the measured time in order to get the handicap corrected time. Thus, a yacht with SRS 1.30 needs to sail at least 30% faster than a yacht with SRS 1.00 to win over it. Trimarans of the type open OMRA 60, designed for racing only, have SRS values above 3.0.

As the system is empirically based the SRS number for each individual model might be subject for evaluation and eventually change. This particularly applies to new models based on VPP. The system enables yachts of all sizes and types to compete with each other. SRS 1.00 would equal an average boatspeed of 4.5 knots in a circular at 5.0 m/s.

Wiktionary

srs

abbr. (context texting chatting English) (abbreviation of serious English)