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

International Navtex service means the coordinated broadcast and automatic reception on（）khz of maritime safety information by narrow-band direct-printing telegraphy using English language.

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

Radio communication（）for many years and helps to save tens of thousands of lives.

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

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

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

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

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

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