Marine Systems
Aviation Recorders
Page 1–24
Initial Issue
165M0601-00
Feb. 01/05
1.5.2.2
ACA - AIS Regional Channel Assignment Message
The zone created of this sentence must be accepted by the channel management
rules (size of zone, distance to own position, etc.) If the zone isn’t accepted, the
zone will be ignored.
Field
Notes
Sequence Number
Ignored
NE Latitude (2 fields)
Used
NE Longitude (2 fields)
Used
SW Latitude (2 fields)
Used
SW Longitude (2 fields)
Used
Transitional Zone Size
Used
Channel A
Used
Channel A Bandwidth
Used
Channel B
Used
Channel B Bandwidth
Used
Tx/Rx Mode
Used
Power Level
Used
In Use Flag
Ignored
Time of In Use Change
Ignored
1.5.2.3
ACK - Acknowledge Alarm
Field
Notes
ID of the Alarm Source
Used
1.5.2.4
AIQ - Query Sentence
Field
Notes
Approved Sentence Formatter of
Data being Requested
It is possible to query the
ACA Sentence