Designed by Bruno Devriese and built by French manufacturer Sysba Marine starting in 1989, this 30-foot sailboat represents a thoughtful approach to coastal cruising with shallow-water capability. The twin keel configuration sets the Rm 900 apart from conventional monohulls, allowing it to sit upright when beached or in drying harbors while maintaining reasonable sailing performance with its fractional sloop rig. With plywood and marine epoxy construction, the Rm 900 offers a robust yet relatively lightweight platform at 7,275 pounds displacement. The twin keels provide excellent directional stability and reduce draft to just over four feet, making this boat ideal for exploring shallow bays, rivers, and tidal waters where deeper-keeled vessels cannot venture. The moderate sail area of 608 square feet delivers respectable performance while remaining manageable for small crews. The comfort ratio of 15.14 suggests a boat optimized more for cruising than racing, while the capsize screening formula of 2.4 indicates good stability for coastal waters. With only 43 hulls produced, the Rm 900 remains a rare find that appeals to sailors seeking the unique advantages of twin keel design for gunkholing and shallow-water exploration along protected coastlines.
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What is the Rm 900's sail area to displacement ratio?
The Rm 900 has a Sail Area to Displacement ratio (SA/D) of 26. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.
What is the Rm 900's comfort ratio?
The Rm 900 has a Ted Brewer Comfort Ratio of 15.14. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.
Is the Rm 900 safe for offshore sailing?
The Rm 900 has a Capsize Screening Formula value of 2.4. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.
What is the hull speed of the Rm 900?
The theoretical hull speed of the Rm 900 is 7.01 kn knots, calculated from its waterline length.
How much does a Rm 900 weigh?
The Rm 900 has a displacement of 7,275.25 lb and a length overall (LOA) of 30.58 ft.
Who designed the Rm 900?
The Rm 900 was designed by Bruno Devriese, first built in 1989.