Gmdss : Element 7 - 377/600
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| The Inmarsat telephone and TELEX communications channel usage scheme is: |
| A) Many ships on the same TELEX analog channel frequency and many ships on the same TDM telephone channel. |
| B) One ship per telephone channel and many ships per TELEX channel. |
| C) One ship per analog telephone channel and one ship per TELEX analog channel frequency. |
| D) One ship per channel whether telephone or TELEX. |
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