You are inbound in a channel marked by a range. The range line is 309°T. You are steering 306°T and have the range in sight as shown in illustration D048NG below. Which action should you take?

Correct Answer: Option B — Immediately alter course to the right to bring the range in line.

When inbound on a channel range with the lights open such that the upper light is to the right of the lower light, the vessel is to the left of the range line. You must alter course to starboard (right) to regain the centerline.