Question 328General Subjects - Assistant Engineer

The correct answer is D. The explanation is as follows: 1) If the hydraulic actuator is inboard (located inside the vessel), a mechanical pull-push rod is located within the propeller shaft to actuate the blade rotating mechanism. If the hydraulic actuator is outboard (located outside the vessel), hydraulic oil pipes are located within the propeller shaft to transmit the hydraulic pressure and actuate the blade rotating mechanism. 2) This is the standard configuration for a controllable-pitch propeller system, where the location of the hydraulic actuator determines whether a mechanical or hydraulic system is used within the propeller shaft. 3) The other options are incorrect as they do not accurately describe the relationship between the actuator location and the type of mechanism within the propeller shaft.