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Class 2 (2nd Engineer) SC&S 📅 Sep 2025

Exam Question

A ship of 15000 tonne displacement has an Admiralty Coefficient, based on shaft power, of 420. The mechanical efficiency of the machinery is 83%, shaft losses 6%, propeller efficiency 65% and QPC 0.71. At a particular speed the thrust power is 2550kW. Calculate: (16) 

(i) indicated power, 

(ii) effective power, 

(iii) ship speed.

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