Marina Exam Questions: The masthead light of an air-cushion vessel must be visible and shown over how many points of the compass?

Marina Exam Questions 

The masthead light of an air-cushion vessel must be visible and shown over how many points of the compass? 

A. air-cushion vessel does not require masthead light 
B. Over an arc of the horizon of 20 points of the compass 
C. Over an arc of the horizon of 10 points of the compass 
D. Over an arc of the horizon of 12 points of the compass 


Answer:  B.   Over an arc of the horizon of 20 points of the compass