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Lookup NU author(s): Professor Martin Downie
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There is a growing trend to add a forward rudder to a canting keel configuration to offset the loss of hydrodynamic side force from the keel in its canted position. The configuration has the added advantage that the forward rudder allows the yacht to turn about a vertical axis and be sailed with virtually zero leeway. This paper presents an experimental investigation of the effects of an increased canting keel angle on resistance, side force and vertical lift carried out in calm water in a towing tank. On the basis of the model test results the flow interaction between the forward rudder and the canting keel strut is investigated, and the drag and side force characteristics of a yacht with two turning rudders are presented and analysed. © 2007: Royal Institution of Naval Architects.
Author(s): Maes FS, Downie MJ
Publication type: Article
Publication status: Published
Journal: Transactions of the Royal Institution of Naval Architects Part B: International Journal of Small Craft Technology
ISSN (print): 1740-0694
ISSN (electronic): 1740-0708
Publisher: Royal Institution of Naval Architects