You are inbound in a channel marked by a range. The range line is 040°T. You are steering 036°T. The range is in sight as shown in illustration D047NG below, and is closing. Which action should you take?

Correct Answer: Option D — Continue on course until the range is closed, then alter course to the right.

When steering to port of an inbound range (036° vs 040°) and the range is open with the upper marker to the right, continuing on course until the range closes ensures safe passage across the channel centerline before altering course to starboard to parallel the axis.