You are entering port and have been...

Question 1 / 2066636ee928f7522a1c5196b1

Question 1 of 2066636ee928f7522a1c5196b1

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?

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🔍 Key Concepts

• Range (leading) lights show the centerline of a channel or track, not an anchorage • Anchoring rules near channels: avoid blocking traffic and obstructing navigation aids • Your vessel’s heading (SW’ly) and the lights on your starboard beam tell you where the channel line is relative to your ship

💭 Think About

• What is the primary purpose of a pair of range lights—do they normally mark a safe place to stop, or a line to follow? • If you anchored directly on or close to the range line, how might that affect other vessels using that range to enter/leave port? • Would a navigator ever intentionally use the range line itself as an anchorage just because the area is free of obstructions?

✅ Before You Answer

• On the chart, confirm what the range line represents (center of channel vs anchorage) • Think about the rule that you must not obstruct a navigational aid or block a fairway when at anchor • Ask yourself whether the question is about when to drop the anchor, or where you are allowed to be relative to the range line and channel

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Question 1 of 20

NOT drop the anchor until the lights are in line

Ensure your ship will NOT block the channel or obstruct the range while at anchor

Drop the anchor immediately as the range lights mark an area free of obstructions

Drop the anchor immediately as a change in the position of the range lights will be an indication of dragging anchor

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Question 1 / 2066636ee928f7522a1c5196b1

Question 1 of 2066636ee928f7522a1c5196b1

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Question 1 of 20

66636ee928f7522a1c5196b1

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🔍 Key Concepts

💭 Think About

✅ Before You Answer

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