You are inbound in a channel marked by a range. The range line is 133° T. You are steering 129° T and have the range in sight as shown in illustration D048NG below. Which action should you take?

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

When the range appears with the bottom marker to the right of the top marker, the vessel is to the left of the range line. To correct this deviation and return to the center of the channel, the vessel must immediately alter course to the right to bring the range into alignment.