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°? ILLUSTRATION D034DG

Correct Answer: Option C — 690 yards

Advance represents the longitudinal distance a vessel travels parallel to its original course from the execution of a rudder command until the heading changes by a designated angle. Analytical plotting of trial data for a 45-degree course alteration precisely confirms an advance of 690 yards.