Gmdss : Element 7 - 167/600
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| Which of the following watches must a compulsory vessel maintain when sailing in Sea Area A1? |
| A) A continuous DSC watch on 8414.5 kHz plus one other HF DSC frequency. |
| B) A continuous DSC watch on 2187.5 kHz. |
| C) A continuous DSC watch on Ch-16. |
| D) A continuous DSC watch on Ch-70. |
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