Radiotelephony communication or radio telex communication or both will be carried out by terrestrial or satellite means,（）the equipment fitted on ship and the area in which the incident occurs.

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

Particular care should be（）in selecting CESs in areas where Ocean Regions overlap.

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

Before GMDSS, if the radio officer on board is serious ill,（）.

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

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

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 advantage of geostationary satellites is（）.

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