Working Paper Article Version 1 This version is not peer-reviewed

Reanalysis of the Sydney Harbor RiverCat Ferry

Version 1 : Received: 13 January 2021 / Approved: 14 January 2021 / Online: 14 January 2021 (07:54:26 CET)

A peer-reviewed article of this Preprint also exists.

Doctors, L.J. Reanalysis of the Sydney Harbor RiverCat Ferry. J. Mar. Sci. Eng. 2021, 9, 215. Doctors, L.J. Reanalysis of the Sydney Harbor RiverCat Ferry. J. Mar. Sci. Eng. 2021, 9, 215.


In this paper, we revisit the hydrodynamics supporting the design and development of the RiverCat class of catamaran ferries operating in Sydney Harbor since 1991. More advanced software is used here. This software accounts for the hydrodynamics of the transom demisterns which experience partial or full ventilation, depending on the vessel speed. This ventilation gives rise to the hydrostatic drag, which adds to the total drag of the vessel. The presence of the transom also creates a hollow in the water. This hollow causes an effective hydrodynamic lengthening of the vessel, which leads to a reduction in the wave resistance. Hence a detailed analysis is required in order to optimize the size of the transom. It is demonstrated that the drag of the vessel and the wave generation can be predicted with good accuracy. Finally, the software is also used to optimize the vessel further by means of affine transformations of the hull geometry.


Ferry design; wave generation; ship hydrodynamics


Engineering, Marine Engineering

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