The priority of EGC messages is classified by（）.

SafetyNet is an international service for the broadcast and automatic reception of MSI by means of direct-printing through（）system.

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.

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

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

Ship-to-ship distress alerting should be conducted by（）.

If the beacon is mounted at a wrong place, it may（）by sea water, chemicals, exhaust and vibrations.

Every ship constructed on or after（）shall comply with all the applicable requirements of this chapter.

Radio beacon can be activated（）in case of distress.

Please use（）for（）.