题目内容
_________ services were established by IMO and IHO for the purpose of coordinating the transmission of navigational warnings to ships in coordinated geographical areas.
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What is the urgency signal in the GMDSS?
A vessel is operating in the Western Atlantic. To initiate a ship-to-shore telephone contact to a shoreside party in Dalian city of China, whose number is 411-8472-9640, through Beijing Earth Station, using automatic service by telephone, a valid Inmarsat dialing sequence is _________.
Meteorological services will be developed by _________.
Which of the following frequencies have not been designated for on-scene communications in the Global Maritime Distress and Safety System?
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