AIS (Automatic Identification System) receiver or transponder must be connected to perform AIS functions AIS target display*: MMSI, Call Sign, Ship Name, BRG, DST, SOG and COG Contact AIS Ship with DSC* CPA (Closest Point of Approach) Alarm* 80dB Commercial grade receiver ITU-R M493-13 Class D DSC (Digital Selective Calling) with Individual, All ship, Position Report, Request and Distress Independent Channel 70 receiver built-in for continuous DSC watch Local/Distance attenuator Enter, Save and Navigate to waypoints with Compass page** Navigate to a DSC Distress Call** Submersible JIS-7 / IPX7 (3.3 feet for 30 minutes) ClearVoice noise canceling speaker microphone with channel selection and 16/9 key Oversized rotary channel knob with push to enter, backlit display and keys 30 Watt PA/Loud Hailer with preprogrammed fog signals Capable of connecting an optional RAM3 second station remote microphone Intercom between radio and RAM3 DSC position request and report functions when connected to compatible GPS chart plotter Voice Scrambler (optional) Versatile user-programmable scanning, priority scan and Dual Watch One-button access to Channel 16 and 9 User programmable soft keys Navigation (LAT/LON, SOG and COG) information shown on display when connected to GPS 38400 AIS VDM sentence output to compatible GPS chart plotter