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

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

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

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.

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.

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.

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

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

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.

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