Practice Test Geeks(CMRT) Certified Marine Radar Technician Practice Test
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Navigation & Chart Integration Flashcards

6 cards from real CMRT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 Navigation & Chart Integration flashcards as text

  1. What does 'Closest Point of Approach' (CPA) indicate in ARPA/MARPA displays?

    Answer: The distance at which own ship will pass closest to a tracked target if both vessels maintain current course and speed

    CPA is the minimum predicted distance between own ship and a tracked target based on current vectors, used to assess collision risk.

  2. What is TCPA in radar target tracking?

    Answer: Time to Closest Point of Approach — the time until a tracked target reaches its CPA

    TCPA (Time to Closest Point of Approach) indicates how many minutes until a tracked target reaches its closest point to own ship.

  3. What is the function of a guard zone (alarm zone) in a radar navigation system?

    Answer: To trigger an alarm when a radar target enters a predefined area around own ship

    A guard zone triggers an audible or visual alarm when any radar target enters the defined area, alerting watchkeepers to potential close-quarters situations.

  4. Which IEC standard governs the performance requirements for shipborne radar equipment?

    Answer: IEC 62388

    IEC 62388 specifies the minimum performance requirements, methods of testing, and required test results for shipborne radar equipment.

  5. What is the purpose of a heading line (HL) on a radar display?

    Answer: To show the vessel's current heading directly from the bow on the radar display

    The heading line extends from own ship's position in the direction of the vessel's bow, providing a continuous reference to own ship's heading on the radar display.

  6. When integrating AIS with radar, what is the term for a target shown as both an AIS contact and a radar echo?

    Answer: Fusion target or CONSORT target

    A fusion target (sometimes called a CONSORT target) is one where the AIS transponder signal and the radar echo have been correlated and merged into a single displayed target.