Specifications

26
5.2.7
AIS 7- LONG RANGE (LR) DISPLAY
This display shows a list of queries by other AIS stations going through the INMARSAT-C or other
long-range communication systems. The MX51x can be set to respond to long-range interrogations
either automatically, manually (default) or by external application.
When the setting is in AUTO, the MX51x will provide the requested information automatically.
When in MANUAL, the operator needs to highlight the SEND REPLY softkey and press the ENT key to
reply. The soft-keys can be brought up by pressing the EDIT key. Every time a long range query is
received, the MX51x will pop-up a message window accompanied by an audio alarm. When in “Ext
Appl” mode the external application will need to respond to the MX51x with permission to reply.
To look at the long-range list, press the AIS key several times until it shows the AIS 7 Long Range
screen (as shown below).
Display Field Descriptions:
ID - Query index number (0-99)
TIME - Time when the long-range message was received (HH:MM)
MMSI- ID of requesting station
REPLY - YES-means the query has been answered
NO - means no reply has been sent yet
ABCEFIOPUW - an ‘X’ under each letter heading denotes the information requested in the
interrogation message
Reply message description:
A - Ship’s name, call sign and IMO number
B - Date and time of message composition
C - Position
E - Course over ground
F - Speed over ground
G - Destination and Estimate Time of Arrival (ETA)
H - Draught
I - Ship/Cargo type
J - Ship’s length, breath, type
K - Persons on board