（）is used for receiving maritime safety information which is automatically printed by the receiver.

A.NAVETEX receiver
B.Search and Rescue Transponder
C.Emergency Position Indicating Radio Beacon
D.Digital selective calling

A.NAVETEX receiver
B.Search and Rescue Transponder
C.Emergency Position Indicating Radio Beacom
D.Digital selective calling

A.The echo sounder
B.The radar
C.The course recorder
D.The direction finder