Designed by Peter Barrett and built by Coastal Recreation Inc. from 1969 to 1977, this compact fractional sloop represents an interesting chapter in American small boat design during the early fiberglass era. With its generous beam of 7.82 feet and moderate displacement of 1,900 pounds, the Aquarius 21 offers more interior volume than many boats in its size class while maintaining respectable sailing characteristics. The boat's keel/centerboard configuration provides versatility for both deeper waters and shallow cruising grounds, making it well-suited for coastal exploration and protected water sailing. The substantial ballast ratio of 35% contributes to solid stability, while the fractional rig with 163 square feet of sail area delivers adequate power for light to moderate conditions. Barrett's design emphasizes practicality over pure performance, evident in the boat's moderate comfort ratio of 9.94 and reasonable capsize screening value of 2.53. These numbers suggest a forgiving platform for beginning sailors or those seeking relaxed coastal cruising rather than aggressive racing. The hull speed of 5.72 knots is typical for this length, making the Aquarius 21 ideal for weekend coastal adventures, daysailing, and learning the fundamentals of sailboat handling in a stable, predictable package.
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What is the Aquarius 21's sail area to displacement ratio?
The Aquarius 21 has a Sail Area to Displacement ratio (SA/D) of 17.04. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.
What is the Aquarius 21's comfort ratio?
The Aquarius 21 has a Ted Brewer Comfort Ratio of 9.94. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.
Is the Aquarius 21 safe for offshore sailing?
The Aquarius 21 has a Capsize Screening Formula value of 2.53. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.
What is the hull speed of the Aquarius 21?
The theoretical hull speed of the Aquarius 21 is 5.72 kn knots, calculated from its waterline length.
How much does a Aquarius 21 weigh?
The Aquarius 21 has a displacement of 1,900.00 lb and a length overall (LOA) of 21.00 ft.
How much does a used Aquarius 21 cost?
Based on 1 recent market listings, used Aquarius 21 sailboats typically sell for between $3,200 and $3,200, with a median asking price of $3,200. Price varies significantly based on year, condition, location, and included equipment.
Who designed the Aquarius 21?
The Aquarius 21 was designed by Peter Barrett, first built in 1969.