Which of the followings is main factors to influence the propagation range for VHF?
A. channel
B. frequency
C. antenna height
D. weather
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_________ are provided free of charge by the LES.
A. Distress communications
B. Traffic Lists.
C. Vessel position information to ship owners.
D. GPS relays.
A DSC call from ship with the called MMSI number 041212345 is _________.
A. an area call
B. a ship to shore call
C. a group call for ship stations
D. a ship-to-ship call
The communication arrangements are designed to enable distress alerting to be performed in all three directions: _________ in all sea areas.
A. Ship， shore and person
B. Ship to shore， shore to ship and ship to ship
C. Sea to coast， SES to CES and ship to ship
D. Ship to shore， ship to the shipping company and ship to RCC
Which of the following statements is not true regarding SART?
A. The SART has a transmitter only.
B. The SART will respond to the interrogation of radars.
C. The SART may set up survival boats.
D. The SART may set up compass deck of ship in distress.
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