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#1
07-19-2007, 01:18 PM
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| Rudder force Need someone to kindly help me to calculate turning moment of a TWIN-SCREW motor-ship with centre-line SINGLE rudder. Conditions are: Both engines ahead at same RPM. Ship's speed = 10 knots. Rudder angle = 35°. Rudder type = Simple (rudder post on AP). Rudder dims = 4,600 (H) x 3,850 (L) mm. Distance of centre of pressure from fwd edge of rudder = 1,430 mm (as calculated by Joessel's formula). Distance of ship's G from AP = 88 m. Many thanks for help!  |
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