On-scene communications will normally take place between（）.

Monitoring is especially important in a highly automated system which is dependent on careful（）procedure and format.

Please use（）for（）.

（）will form the basis for distress alerting and safety calling.

The frequency（）the safety message will be transmitted shall be included in DSC safety call.

SOLAS ships shall be equipped with（）.

Every lifeboat which is fitted with a fixed two-way vhf radiotelephone apparatus with（）which is separately mounted shall be provided with arrangements for sitting and securing the antenna effectively in its operating position.

Distress traffic is the communication（）between the station in distress and the ships, aircraft, coast radio stations, coast earth stations and rescue centers participating in the rescue work.

In case a ship is in emergency or distress in any of 4 areas, it is required to use the continuous（）alert.

The rescue coordination center may（）on stations which interfere with traffic.