Ships in area A2 will at least transmit a ship-to-shore alert on ______ and satellite EPIRB.
Which frequency is designated for VHF digital selective calling?
Which channel is designated for VHF digital selective calling?
Which of the following frequencies is not used for DSC service?
Which of the following frequencies is as international distress and safety frequencies on MF for radio telephone?
Every ship, while at sea, shall maintain a continuous watch on ______ if the ship is fitted with an MF radio installation.
Which of the following frequencies have not been designated for on-scene communications in the Global Maritime Distress and Safety System?
If a ship is fitted with a VHF radio installation, while at sea, shall ______.
If a ship is fitted with a VHF radio installation, while at sea, shall ______.
Which channel is designated for VHF digital selective calling?
The distress message should be preceded by ______.
______ consists of all messages relating to the immediate assistance required by the ship in distress.
According to the basic concept of GMDSS, can be rapidly alerted to a distress incident.
An "area call" is usually applied to ______.
______ indicates that a ship is in distress and requires immediate assistance.
