You are conducting trials to determine the maneuvering characteristics of your vessel. While making a turn, you take ranges and bearings of an isolated light with the results as shown. Based on this information, what is the advance for a turn of 45°? D034DG

Correct Answer: Option D — 690 yards

Advance is the distance traveled along the original course line until the vessel reaches a specific heading. Utilizing the data from illustration D034DG, the longitudinal distance covered from the initiation of the turn until the vessel has completed a 45-degree change in heading is measured at 690 yards.