A Simplified Method for Calculating Propeller Thrust Decrease for a Ship Sailing on a Given Shipping Lane

Zelazny, Katarzyna

doi:10.2478/pomr-2014-0015

Abstract

During ship sailing on rough water, relative ship motions can be observed which make the propeller emerge from the water, and decrease its thrust as a consequence. The article presents a simplified method for calculating the thrust decrease and the time of propeller emergence from water for the ship on a regular an irregular wave. The method can be used for predicting the operating speed of the ship on a given shipping lane.

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A Simplified Method for Calculating Propeller Thrust Decrease for a Ship Sailing on a Given Shipping Lane

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