In addition to communication equipment, the GMDSS will introduce requirements of SARTs and EPIRBs designed to improve the().
时间:2022-11-09
The frequency 518KHZ will be used to transmit()and()wanings in NAVTEX.
Class A EPIRBs are required on().
At sea,all required GMDSS equipment(other than survival craft equipment)must be proven operational by().
时间:2022-11-08
The identification character of each Navtex station is regarded as()to the messages.
All self-propelled vessels on an international voyage must be equipped with how many Emergency Position Indicating Radiobeacons (EPIRB)()?
By using previous communication system, rescue is often a matter of chance. What does “a matter of chance” mean?()
The advantage of geostationary satellites is().
Ship-to-ship distress alerting should be conducted by().
时间:2022-11-07
On which vessels is GMDSS required? ()
The FEC mode is for()from()station to two or more other stations when available.
时间:2022-11-06
The maritime radio system consisting of a series of coast stations transmitting coastal warnings is called().
MSI stands for().
There are some back-up satellites in the event of failure. If the operational satellite is out of work,().
The distress alert should()the ship in distress.
时间:2022-11-05