Abstract
Higher speeds of vessels and the greater engine performance involved in present day types of ships require new considerations with regard to the transmission of the engine power onto the propellers. A fast containership for the North Atlantic Trade is used to propose the overlapping arrangement of the propellers as an alternative to the conventional twin-propeller arrangement. The overlapping propellers offer hydrodynamical, shipbuilding and engine advantages resulting in lower building costs, increased number of containers and smaller power requirement at the same speed of the vessel. By means of extensive tank tests the propulsion, cavitation and vibration characteristics of overlapping propellers were investigated.
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