SRS is a semi-empirically based handicapping system used in yacht racing in the Nordic countries.
The first version of the handicap system was developed in 1970 by the Swedish yacht designer Lars-Olof Norlin.
Trimarans of the type open OMRA 60, designed for racing only, have SRS values above 3.0.
The system was revised in 2011 and onwards, and is now primarily based on a secret calculation formula that should reflect the performance of each yacht.
As the system is semi-empirically based the SRS number for each individual model might be subject for evaluation and eventually change.