Analyzing available literature, both scientific and commercial, the lack of a simple and quick methodology
for determining the dimensions of sailing yachts might be noticed. This method could be used to accelerate
the optimal design of modern sailing yachts. When a sailing yacht is designed, many factors need to be taken
into consideration, e.g., autonomy, number of crew members, limitations of road transportation, construction
and operating costs, yacht speed, and safety of navigation (stability and seaworthiness). Based on the analysis
of these criteria, the main dimensions of the yacht need to be determined. In order to quickly select the most
optimal type of yacht that will meet the expectations of the customer, several or a dozen variants of the yacht
size should be made. Approximate functions are necessary to quickly determine the calculated coefficients depending on the length of the waterline of the hull. The dimensions of the sailing yacht and its coefficients have
a decisive influence on the speed of the yacht. The methodological approach used in this article is to use a quick
and easy-to-use regression method to present an analysis of the design dimensions and coefficients of a classic
sailing yacht. Sailing yachts’ data of 35 similar yachts built between 2010 and 2019 were collected. The overall
length range from 6.93 to 21.8 m and the obtained results, without loss of accuracy, are interpolated within
the range. The main contribution of this article is to develop simple regression equations to calculate the main
dimensions and coefficients of a sailing yacht in many variants without unnecessary delay. These can be used
by yacht designers and other people interested in yacht design.