Marina Exam Reviewer: 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?

Marina Exam Reviewer

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?

A. The targets true course vector will be in error. 
B. The generated TCPA will be later than the actual TCPA. 
C. The generated CPA will be less than the actual CPA. 
D. The range of initial target acquisition will be less than normal. 


Answer:     A. The targets true course vector will be in error. 

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