Question 15C5

Coast Station MMSI are nine-digit numbers that always begin with two zeros (00), followed by the three-digit Maritime Identification Digit (MID) indicating the country, then four more digits. Therefore, statement B is false because it incorrectly places the MID before the two zeros. Conversely: * **A) All Coast Station MMSI must begin with 2 zeros.** This is true, as explained above (00MIDxxxx). * **C) A group call must begin with a single zero followed by the MID.** This is true for group calls to ships (0MIDxxxxx). * **D) The first 3 digits of a ship MMSI comprise the MID.** This is true; individual ship MMSI start with the country's MID (MIDxxxxxx).