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MEO Class II – NAVAL : 2019/FEB/07 – 2019/AUG/07 – 2019/OCT/08 – 2020/MAR/07 – 2020/NOV/06 – 2021/NOV/10 – 2022/APR/07 – 2022/JUN/09 – 2020/OCT/07
Question
Q9. With respect to Ship Propulsion:
a. Explain the various efficiencies associated with propeller and shafting arrangement.
b. When a propeller of 4.8 m pitch turns at 110 rpm, the apparent slip is found to be —S % and the real slip is 1.5 S %. If the wake speed is 25 % of the ship speed, calculate the ship speed, apparent slip and the real slip.
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