Question 1832Navigation General

70% to pass

You are entering port and have been instructed to anchor, as your berth is not yet available. You are on a SW'ly heading, preparing to drop anchor, when you observe the range lights as shown in illustration D047NG below, on your starboard beam. What action should you take?

Diagram for USCG Navigation General: You are entering port and have been instructed to anchor, as your berth is not...
A ensure your ship will NOT block the channel or obstruct the range while at anchor
B NOT drop the anchor until the lights are in line
C drop the anchor immediately as the range lights mark an area free of obstructions
D drop the anchor immediately as a change in the position of the range lights will be an indication of dragging anchor
AI Explanation

The correct answer is A) ensure your ship will NOT block the channel or obstruct the range while at anchor. This is the correct answer because when anchoring, you must ensure that your vessel does not block the channel or obstruct any navigation aids, such as the range lights shown in the illustration. Blocking the channel or obstructing the range lights could create a hazardous situation for other vessels entering or leaving the port. The range lights are important navigational aids, and you must be mindful of their position and ensure your anchored vessel does not interfere with them. The other options are incorrect because: B) is incorrect as you do not need to wait for the lights to be in line before dropping anchor, as long as you ensure your vessel does not obstruct them; C) is incorrect as you should not drop the anchor immediately without first confirming it will not block the channel or obstruct the range; and D) is incorrect, as the change in the range lights' position may not necessarily indicate that your anchor is dragging.

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