7-A-023: MMSI: Group & Coast Station I.D. Numbers
7-023A:
A DSC call is received from a station with a MMSI number of 003669991. Which of the following types of stations is it from?
A U.S. coast station
A vessel operating in Sea Area A3.
A group ship station
An Intercoastal vessel
7-023B:
A valid MMSI number for a DSC call to a specific group of vessels is:
030327931
003664523
338462941
003036483
7-023C:
MMSI 030346239 indicates what?
Group MMSI.
Inmarsat-C I.D. number.
Coast station.
Ship station.
7-023D:
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.
7-023E:
Which of the following statements concerning MMSI is true?
All of the above
All Coast Station MMSI must begin with 2 zeros.
The first 3 digits of a ship MMSI comprise the MID.
A group call must begin with a single zero followed by the MID.
7-023F:
Which of the following statements concerning MMSI is true?
All Coast Station MMSI must be 9 digits and begin with 2 zeros followed by the MID.
All ship station MMSI must begin with a single zero and include the MID.
All group station MMSI must begin with the MID.
None of the above
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