Navigation Problems USCG Question #596 (Set 17)

You are planning a voyage between Portland, LAT 46°05'N, LONG 124°00'W, and Korea via LAT 44°00'N, LONG 155°00'E. Which statement is TRUE? (Use gnomonic tracking chart WOXZC 5270)

Official USCG Answer & Rule Citation

Correct Answer: Option D — You can steam on course 270°T, at latitude 52°N, between longitudes 149°W and 160°W in a composite sailing.

Composite sailing involves following a great circle track until reaching a limiting latitude, then steaming along that parallel. According to Bowditch, this method is used to restrict the maximum latitude reached during a voyage. Option D correctly describes the application of a limiting parallel in composite sailing.

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