Question 1490Navigation General

70% to pass

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?

Diagram for USCG Navigation General: You are inbound in a channel marked by a range. The range line is 309°T. You...
A Immediately alter course to 309°T if the range is closing.
B Immediately alter course to the right to bring the range in line.
C Immediately alter course to the left to bring the range in line.
D Continue on the present heading until the range is in line then alter course to the right.
AI Explanation

The correct answer is B) Immediately alter course to the right to bring the range in line. When navigating in a channel marked by a range, you should steer to keep the range line in sight and aligned with your course. Since you are currently steering 306°T and the range line is at 309°T, you need to alter course to the right to bring the range in line with your heading. This will ensure you are traveling parallel to the channel and staying on the proper course. The other options are incorrect because: A) Altering to 309°T may take you out of the channel; C) Altering to the left would take you further off course; and D) Continuing on 306°T until the range is in line would mean you are drifting to the left of the channel, which is not the proper action.

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