The purpose of the variable range marker is...

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The purpose of the variable range marker is to:

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The purpose of the variable range marker is to:

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🔍 Key Concepts

• Variable Range Marker (VRM) function on marine radar displays • Difference between range (distance) and bearing (direction) measurements on radar • How VRM is commonly used in navigation and collision avoidance (e.g., checking CPA, distance off land)

💭 Think About

• On a typical marine radar, what control or feature do you use to measure the distance from your ship to a single contact or coastline point? • Does the VRM create a line or a circle on the radar screen, and what does that shape tell you about what it measures? • Which function would you use if you wanted to know the distance between your ship and a buoy directly ahead?

✅ Before You Answer

• Identify whether VRM is associated with a circle centered on own ship or a line from the center. • Confirm whether VRM normally measures distance from own ship or between two external targets. • Distinguish VRM use from the Electronic Bearing Line (EBL), which is for bearing, not range.

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Question 1 of 20y1wTpuPbXJYB6Z8N73u2

The purpose of the variable range marker is to:

Back

Question 1 of 20

y1wTpuPbXJYB6Z8N73u2

The purpose of the variable range marker is to:

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🔍 Key Concepts

💭 Think About

✅ Before You Answer

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