Designed by the legendary Sparkman & Stephens firm, this rare Finnish-built sailboat represents classic 1970s yacht design philosophy with only five hulls ever constructed between 1974 and 1976. Built by Turun Teräskaluste in Finland using wood and fiberglass construction, the Aquarius 40 Ss embodies the quality craftsmanship that Finnish yards were renowned for during this era. At nearly 40 feet with a moderate beam and deep fin keel drawing 6.51 feet, this masthead sloop strikes an appealing balance between performance and comfort. The substantial displacement of 17,200 pounds, with 7,000 pounds of ballast, creates a stable platform well-suited for coastal cruising and offshore passages. Her comfort ratio of 38.59 suggests excellent seaworthiness for extended voyages, while the capsize screening value of 1.55 indicates good stability characteristics. The Sparkman & Stephens pedigree ensures refined sailing qualities and seakindly motion in challenging conditions. With 660 square feet of sail area, she offers respectable performance without being overpowered. Her rarity makes finding one a special opportunity for sailors seeking a distinctive yacht with impeccable design heritage and the robust construction typical of Scandinavian boatbuilding traditions.
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What is the Aquarius 40 Ss's sail area to displacement ratio?
The Aquarius 40 Ss has a Sail Area to Displacement ratio (SA/D) of 15.91. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.
What is the Aquarius 40 Ss's comfort ratio?
The Aquarius 40 Ss has a Ted Brewer Comfort Ratio of 38.59. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.
Is the Aquarius 40 Ss safe for offshore sailing?
The Aquarius 40 Ss has a Capsize Screening Formula value of 1.55. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.
What is the hull speed of the Aquarius 40 Ss?
The theoretical hull speed of the Aquarius 40 Ss is 7.18 kn knots, calculated from its waterline length.
How much does a Aquarius 40 Ss weigh?
The Aquarius 40 Ss has a displacement of 17,200.00 lb and a length overall (LOA) of 39.83 ft.
Who designed the Aquarius 40 Ss?
The Aquarius 40 Ss was designed by Sparkman & Stephens, first built in 1974.