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.

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.

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

The vessel has stayed in port for seven days because she needs（）.

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.

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

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

Please use（）for（）.

As each MSI message will have a unique identity, the printing of messages already received correctly is（）.