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DLBA UNIVERSITY

Rudder Design for High-Performance Boats

JUNE 3, 2017

By Donald L. Blount and Dudley Dawson

 

 

Whether steering a straight course or maneuvering, a boat operator must be in control of the boat’s direction. Outboards, outdrives, and some waterjets and surface drives generate steering forces by turning the propulsion unit. Some boats have bow thrusters to assist in low-speed maneuvering. High-speed craft may be fitted with differential; trim tabs or interceptors for steering.

 

In case you would like to receive more information or discuss about this subject, please contact Jeffrey Bowles

Rudder Design for high speed graph

References

> Gregory, D.L. and Dobay, G.F. , “The performance of High-Speed Rudders in a Cavitating Environment,” SNAME Spring Meeting, April 1973. 

> Altmann, R.J., “Rudders for a 50-Knot Planing Craft,” Hydronautics, Inc. Report 509-1, July 1965 (Proprietary).Abrahamsson, S., “35/38M Yacht –Study of Lift-Drag-Ventilating Properties of a Course-Stabilizing Fin,” > SSPA Report 6663-1, August 1992 (proprietary).

> Blount, D.L., “Tuning a Twin-Screw Rudder Installation,” Professional BoatBuilder magazine No. 45, page 

 

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