Wing Sail Vessel Performance

Estimate sailing vessel resistance, wing-sail speed, and hydrogenerator loading from a compact input set.

Hull

Length waterline m

Waterline beam per hull m

Total vessel displacement tonnes

Hull configuration resistance model

Hull centreline spacing / length s/L

Catamaran seaway allowance %

Wing-sail area m2

Lift coefficient 7.00

True wind speed kn

Wind sweep minimum kn

Wind sweep maximum kn

True wind angle deg

Wing lift/drag ratio 8.0

Hydrogenerator engaged

Auto size rotor at 21 kn TWS

Rotor diameter m

Power coefficient 0.36

Generator efficiency 90%

Vessel Speed

0.0 kn

with hydrogenerator

Bare Hull Resistance

0.0 kN

at solved speed

Usable Hydro Power

0 W

0 N added drag

Hull Speed

0.0 kn

1.34 x sqrt(LWL ft)

Drive Fraction

best TWA 0 deg

Governing Equations

U = true wind speed; v = vessel speed; θ = true wind angle; β = apparent wind angle; S = wing area; E = max(L/D, 0.1). Angles are shown in degrees.

Maximum Harvested Power by Wind Speed

Max usable hydro power