Designed by renowned British naval architect Angus Primrose and first launched in 1971, this Spanish-built cruiser represents solid European craftsmanship from sailing's golden era. Built by Ballina Marine in fiberglass construction, the Sirocco 31 features a balanced fin keel with rudder on skeg configuration that provides reliable directional stability while maintaining good maneuverability. With a displacement of 6,500 pounds and nearly half that weight carried as ballast, this masthead sloop offers reassuring stability for coastal and offshore passages. The boat's conservative sail area to displacement ratio of 14.52 indicates she's built more for comfort and seaworthiness than racing performance, while her low capsize screening value of 1.99 speaks to inherent safety margins that inspire confidence in challenging conditions. The Sirocco 31's moderate beam of 9.25 feet strikes an appealing balance between interior space and sailing performance, while her 5.5-foot draft provides good windward ability without limiting access to many harbors. Her comfort ratio of 19.88 suggests motion that's manageable for extended cruising, making this design well-suited for sailors seeking a reliable, traditional cruising yacht capable of handling both weekend coastal hops and longer passages with equal competence.
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What is the Sirocco 31's sail area to displacement ratio?
The Sirocco 31 has a Sail Area to Displacement ratio (SA/D) of 14.52. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.
What is the Sirocco 31's comfort ratio?
The Sirocco 31 has a Ted Brewer Comfort Ratio of 19.88. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.
Is the Sirocco 31 safe for offshore sailing?
The Sirocco 31 has a Capsize Screening Formula value of 1.99. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.
What is the hull speed of the Sirocco 31?
The theoretical hull speed of the Sirocco 31 is 6.56 kn knots, calculated from its waterline length.
How much does a Sirocco 31 weigh?
The Sirocco 31 has a displacement of 6,500.00 lb and a length overall (LOA) of 31.00 ft.
Who designed the Sirocco 31?
The Sirocco 31 was designed by Angus Primrose, first built in 1971.