Question 889Navigation General70% to pass
Vessels required to have an Automatic Radar Plotting Aid must have a device to indicate the _______________.
AI Explanation
The correct answer is B) speed of the vessel over the ground or through the water.
Vessels required to have an Automatic Radar Plotting Aid (ARPA) must have a device that can indicate the speed of the vessel over the ground or through the water. This is a key function of ARPA systems, as they are designed to track the movement and speed of other vessels in the vicinity to assist in collision avoidance.
The other answer choices are incorrect because they do not relate to the primary function of ARPA systems, which is to provide information about the speed and movement of the vessel itself, not its position, AIS data, or ECDIS trackline.
Related Questions
#887 You have another ship overtaking you close aboard to starboard. You have 3 radar targets bearing 090° relative at ranges of .5 mile, 1 mile, and 1.5 miles. In this case, the unwanted echoes are called _______________.#888 Your ARPA has been tracking a target and has generated the targets course and speed. The radar did not receive a target echo on its last two scans due to the weather. What should you expect under these circumstances? #890 The barometer is an instrument for measuring the _______________.#891 Your ARPA has automatic speed inputs from the log. Due to currents, the log is indicating a faster speed than the speed over the ground. What should you expect under these circumstances? #892 Your ARPA has two guard zones. What is the purpose of the inner guard zone?