7-A-023: MMSI: Group & Coast Station I.D. Numbers
7-23D1:
A DSC call is received from a station with a MMSI number of 003669991. What type of station made the call?
A U.S. coast station
A vessel operating in Sea Area A3.
A group ship station
An Intercoastal vessel
7-23D2:
A valid MMSI number for a DSC call to a specific group of vessels is:
030327931
003664523
338462941
003036483
7-23D3:
A MMSI 030346239 indicates what?
Group MMSI
Inmarsat-C I.D number
Coast station
Ship station.
7-23D4:
Which of the following statements concerning MMSI is true?
All MMSI numbers are 9 digits and contain an MID.
Coast station MMSI numbers have 9 digits starting with 4.
Ship station MMSI numbers can be 7 digits or 9 digits depending on the Inmarsat terminal.
Group MMSI numbers must begin with 2 zeros.
7-23D5:
Which of the following statements concerning MMSI is false?
All Coast Station MMSI must begin with the MID then 2 zeros.
All Coast Station MMSI must begin with 2 zeros.
A group call must begin with a single zero followed by the MID.
The first 3 digits of a ship MMSI compromise the MID.
7-23D6:
Which of the following statements concerning MMSI is true?
None of these answers are correct.
All ship station MMSI must begin with a single zero and include the MID.
All group station MMSI must begin with the MID.
All Coast Station MMSI must be 9 digits and begin with by the MID and then two zeros.
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