Gmdss : Element 7 - 137/600
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| Which of the following statements concerning MMSI is true? |
| A) Coast station MMSI numbers have 9 digits starting with 4. |
| B) All MMSI numbers are 9 digits and contain an MID. |
| C) Ship station MMSI numbers can be 7 digits or 9 digits depending on the Inmarsat terminal. |
| D) Group MMSI numbers must begin with 2 zeros. |
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