37.At the end of each voyage, which document shall be prepared to summarize the events described in the engine logbook during this particular voyage ? (A)Abstract log (B)Event report (C)Watch keeping report (D)Accident report

37.At the end of each voyage, which document shall be prepared to summarize the events described in the engine logbook during this particular voyage ?
(A)Abstract log
(B)Event report
(C)Watch keeping report
(D)Accident report

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統計： A(227), B(46), C(117), D(35), E(0) #601708

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2025/01/03

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當每次航程結束時，應該準備哪份文件來總結...

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10.Longitudinal vibration of propulsion shafting systems is often excited by the variable thrust developed by the propeller due to the non-uniform wake pattern in which it operates. The predominant periodic component of the thrust developed by a propeller occurs at blade-rate frequency, i.e., the number of propeller blades times the rotational frequency of the shaft. For a four-blade propeller running at 60 rev/min, what is the predominant periodic frequency that excites the longitudinal vibration of the propulsion shafting systems? (A)1 Hz (B)2 Hz (C)3 Hz (D)4 Hz

37.At the end of each voyage, which document shall be prepared to summarize the events described in the engine logbook during this particular voyage ?
(A)Abstract log
(B)Event report
(C)Watch keeping report
(D)Accident report

私人筆記 (共 1 筆)

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