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

The quality of EGC messages is（）affected by the position of the ship, the time of reception and climatic conditions.

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

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

The advantage of geostationary satellites is（）.

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

At least two two-way VHF radiotelephone apparatus shall be provided on every cargo ship of（）tons gross tonnage and upwards but less than 500 tons gross tonnage.

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.

By using（）system a ship can send a distress message and know with certainty it will be received.