Don Wennersten's compact S2 55 represents a brief but notable chapter in early 1980s small boat design, produced by S2 Yachts for just two years between 1982 and 1983. With only 70 hulls built, this 18-foot fractional sloop has become something of a rare find on the used boat market. The boat's centerboard trunk configuration and shallow 4-foot draft make it particularly well-suited for coastal sailing, lake cruising, and exploring shoal waters where fixed-keel boats fear to tread. Despite its modest 600-pound displacement, the S2 55 carries a respectable 176 square feet of sail area, giving it spirited performance in light to moderate conditions with a theoretical hull speed of 5.4 knots. The relatively high sail area to displacement ratio suggests this boat was designed with performance in mind, making it appealing for club racing or spirited day sailing. Its fiberglass construction provides durability while keeping maintenance manageable. The comfortable cockpit proportions, aided by the 7.67-foot beam, offer reasonable space for a small crew or family sailing adventures. While not suited for serious offshore work, the S2 55 excels as a versatile coastal cruiser that can handle weekend camping trips and provides an engaging sailing experience without overwhelming newer sailors.
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What is the S2 55's sail area to displacement ratio?
The S2 55 has a Sail Area to Displacement ratio (SA/D) of 39.64. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.
What is the S2 55's comfort ratio?
The S2 55 has a Ted Brewer Comfort Ratio of 3.66. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.
Is the S2 55 safe for offshore sailing?
The S2 55 has a Capsize Screening Formula value of 3.64. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.
What is the hull speed of the S2 55?
The theoretical hull speed of the S2 55 is 5.40 kn knots, calculated from its waterline length.
How much does a S2 55 weigh?
The S2 55 has a displacement of 600.00 lb and a length overall (LOA) of 18.00 ft.
Who designed the S2 55?
The S2 55 was designed by Don Wennersten, first built in 1982.