Which answer best describes a line on the...

Question 1 of 27070jx6S6eIY05AqMiLTztme

Which answer best describes a line on the display which indicates a target's position. The speed is shown by the length of the line and the course by the direction of the line.

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Question 1 of 27070

Which answer best describes a line on the display which indicates a target's position. The speed is shown by the length of the line and the course by the direction of the line.

🔍 Key Concepts

• ARPA / radar plotting symbols and what each line or mark represents • How speed and course of a target are usually displayed on marine radar • Differences between a bearing line, range marker, and a line that encodes motion (speed/course)

💭 Think About

• Which of these options specifically represents a target’s motion (both course and speed), not just its direction or distance? • On a radar screen, what feature shows how fast and in what direction the target will move over a short time? • Which items in the choices are mainly used to measure bearing or range, and which one is used to show relative or true motion of the contact?

✅ Before You Answer

• Identify which choice is defined as a line whose length is proportional to speed and direction shows course on radar/ARPA displays • Confirm that an Electronic Bearing Line (EBL) is related to bearing only, not speed • Confirm that Range Markers and Heading Markers relate to your own ship’s range/heading presentation, not directly to a target’s speed and course