Messages Transmitted by ECDIS

Message	Addressee	Content
ALCa	VDR, BAM, INS	Cyclic alarm list
ALFa	VDR, BAM, INS	Warning
ARCa	BAM, INS	BAM command rejection
EVEb	BNWAS	Navigator alertness
HBTb	BAM, INS	Heartbeat
RRT	ECDIS backup	Route transfer report
VSDb, VSDa, SSDb	AIS	Cargo category, navigation status, vessel draught (maximum current static), port of destination, estimated time of arrival (date, time), flag state
EVEc	SFI Transmitter	SFI Transmitter

Note

Sentences used for backward compatibility (*).

^a IEC 61924-2.
^b IEC 61162-1.
^c IEC 61162-450.