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.

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.

（）by an ice-breaker, it is important to maintain a continuous listening watch on the appropriate VHF channel and to maintain a proper look-out for sound and visual signals.

All coast radio stations（）DSC installed for VHF and HF.

For COSPAS-SARSAT system,（）usually transmit initial COSPAS-SARSAT alert.

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

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

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

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