Appendix B Alert, Maintenance INFO and Permanent information
B-18
B.1.6 List of Aggregated Alerts
Aggregated Alerts are the ability to display multiple alerts in an apparent single alert.
The apparent alerts are called header alerts and the alerts that are aggregated are called member
alerts.
A header alert has the following characteristics:
1) Header alerts and that’s member alerts has same category and same priority.
2) The priority of the header alert is the same as the highest priority among the member alerts.
3) Header alerts cannot be acknowledged directly.
Header alerts
Priority
Category
Member alerts
Warning Area/Object
Warning
A
Traffic Separation Zone
Traffic
Crossing
Traffic
Roundabout
Traffic
Precautionary
Two
Way
Traffic
Deeper
Water
Route
Recommended
Traffic
Lane
Inshore
Traffic
Zone
Fairway
Restricted
Area
Caution
Area
Offshore
Production
Area
Military
Practice
Area
Seaplane
Landing
Area
Submarine
Transit
Area
Crossing
Ice
Area
Canal
Fishing
Ground
Fishing
Prohibited
Pipeline
Area
Cable
Area
Anchorage
Area
Anchorage
Prohibited
Spoil
Ground
Dumping
Ground
Crossing
Dredge
Area