Please use（）for（）.

On-scene communications will normally take place between（）.

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

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

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.

Can MF/HF radiotelephone receive the MSI sent from the coast stations alone?（）

（）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.

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

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

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