🔍 Key Concepts

• Radar plotting tools on an ARPA or marine radar (EBL, VRM, range rings) • Difference between bearing (direction) and range (distance) • How you use an Electronic Bearing Line (EBL) during collision avoidance or to check if a contact is on a constant bearing

💭 Think About

• When you put the EBL over a contact on the radar screen, what information are you actually reading or monitoring on the display? • Which of the options describe direction information and which describe distance information? • Think about what other instrument or display on the vessel already shows your own heading or True North, and whether the EBL would duplicate that.

✅ Before You Answer

• Identify which choices refer to direction/bearing vs. distance/range. • Ask yourself: Do you normally adjust the EBL to line up with a target, or to line up with your ship’s heading or True North? • Confirm which function is usually paired with the EBL on a radar: EBL for direction and which separate feature is used for range measurement.