Abstract
An experiment was carried out to measure the lateral stability and vertical position of the Centre of Lateral Resistance of a one sixth scale model of the hull of a Dragon yacht when moving at a steady speed through the water.
The results obtained showed that the stability with forward motion was up to 7.6% greater than the static stability for the test conditions. It was also found that the actual Centre of Lateral Resistance was 2 1/2% of the draught nearer to the waterline than the design estimate in the upright condition but 6% lower for heel angles in excess of 20°. For normal sailing conditions, with heel angles in the region of 10°–20°, the conventional design value for the vertical position of the Centre of Lateral Resistance would be a reasonable first approximation.
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