Designed by Norwegian naval architect Bjarn Aas in 1936, this classic one-design keelboat represents nearly nine decades of refined sailing heritage. With its moderate 33-foot length and traditional proportions, the International One Design strikes an appealing balance between performance and comfort that has attracted sailors worldwide. The boat's substantial 4,100-pound ballast ratio and deep 5.16-foot draft provide excellent stability and upwind performance, while the fractional sloop rig delivers manageable sail handling for crews of varying experience levels. At 390 square feet of sail area, the boat offers spirited performance without being overpowering, making it suitable for both competitive one-design racing and enjoyable day sailing. Built in both wood and fiberglass over its production run of 250 boats, the International One Design showcases classic Scandinavian design principles with clean lines and seaworthy characteristics. The comfortable cockpit and well-balanced helm make it ideal for coastal cruising and club racing, while the boat's proven seaworthiness has earned respect among traditionalists who appreciate time-tested design. With a hull speed of 6.2 knots and favorable stability numbers, this design continues to attract sailors seeking a classic sailing experience with modern reliability.
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What is the International One Design's sail area to displacement ratio?
The International One Design has a Sail Area to Displacement ratio (SA/D) of 16.95. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.
What is the International One Design's comfort ratio?
The International One Design has a Ted Brewer Comfort Ratio of 34.55. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.
Is the International One Design safe for offshore sailing?
The International One Design has a Capsize Screening Formula value of 1.41. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.
What is the hull speed of the International One Design?
The theoretical hull speed of the International One Design is 6.20 kn knots, calculated from its waterline length.
How much does a International One Design weigh?
The International One Design has a displacement of 7,100.00 lb and a length overall (LOA) of 33.16 ft.
Who designed the International One Design?
The International One Design was designed by Bjarn Aas, first built in 1936.