Question 358General Subjects - 1st Asst/Chief
70% to passOne of your ship's indirect-drive steering gear drive motors needs to be replaced. What minimum short-time rating should the replacement motor have in hours?
A1/4 hour
B1/2 hour
C1 hour
DContinuous operation at 15 percent load followed by 1 hour at full load.
AI Explanation
The correct answer is D) Continuous operation at 15 percent load followed by 1 hour at full load. This is the correct answer because the Coast Guard regulations require steering gear drive motors to have a short-time rating of at least 1 hour at full load. The continuous operation at 15 percent load is necessary to ensure the motor can handle the typical operating conditions, while the 1 hour at full load rating ensures the motor can handle the maximum load requirements if needed. The other options are incorrect because they do not meet the 1 hour at full load requirement set by the Coast Guard regulations for steering gear drive motors.
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