Simrad NX40 Installation & Operation Manual page 64

Sorting Vessels
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Safety msgs (rx)
Safety msgs (rx) are broadcasted messages received
by the AIS receiver. This window displays the date and
time of message received, MMSI of AIS vessel that
broadcasted the message, and the message itself. Safety
msgs (rx) list will store up to 10 messages. The oldest
message is replaced when the list is full.
64 Simrad NX40/45 Installation and Operation Manual