General Navigation USCG Question #590 (Set 19)

Which of the following is a compass card without north-seeking capability that is used for relative bearings?

Official USCG Answer & Rule Citation

Correct Answer: Option C — pelorus

A pelorus is a navigational instrument consisting of a compass card without north-seeking capability, mounted on a stand. It is used to take relative bearings of objects. Unlike a bearing circle, which mounts to a gyro repeater, the pelorus is manually set to the ship's heading.

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