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The influence of ship size and propeller parameters on engine workload during ship motion on regular wave

Żelazny K.

Zeszyty Naukowe Akademii Morskiej w Szczecinie

2015

nr 41 (113)

52--57

While the ship is sailing on waves the relative motions occur which result in propeller emergence, and as a consequence – propeller thrust reduction which results in a decrease in the ship’s speed. Propeller emergence is also accompanied by the decrease in torque values, with which the propeller affects the marine engine. The article presents a simplified method for calculating the decrease in torque of the propeller during ship motion on a regular wave together with the obtained results for various ship sizes and propellers.