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Night Heron Double Details


Night Heron Double

Number of Cockpits: 2

EnglishMetric
Length21.0feet6.4meters
Beam25.0inches63.5cm
Waterline Length19.4feet5.9meters
Waterline Beam24.7inches62.7cm
Design Displacement499.0lbs226.3kg
Draft3.8inches9.7cm
Wetted Area34.1sq ft3.2sq m
Waterplane Area28.6sq ft2.7sq m
Surface Area91.0sq ft8.5sq m
Approx. Bare Boat Weight63.7lbs28.9kg
Volume21.4cu ft606.0liters
Prismatic Coeff.0.61
Block Coeff.0.51
Lateral Plane Coeff.0.72
Sinkage136.0lbs/in24.3kg/cm
Moments to change trim 1 inch151.1foot pounds204.9kg/cm
Righting Moment at 1 degree1.92foot pounds2.60kg/cm