19.1 Priorities of alerts
19.1.1 The alert management should distinguish
between the three priorities listed:
- Alarms
- Warnings and
- Cautions
19.1.2 Alarms should indicate conditions requiring
immediate attention and action by the bridge team.
19.1.3 Warnings should indicate changed conditions
and should be presented for precautionary reasons which are not immediately
hazardous but which may become so, if no action is taken.
19.1.4 Cautions should indicate a condition
which does not warrant an alarm or warning condition, but
still requires attention and out of the ordinary consideration of
the situation or of given information.
19.1.5 Alerts additional to the alerts required
by the organization should be assigned to an priority level using
the criteria for classification.
19.2 Criteria for classification of
alerts
19.2.1 Criteria for classification of
alarms:
- conditions requiring immediate attention and action by the bridge
team to avoid any kind of hazardous situation and to maintain the
safe navigation of the ship
- or escalation required as alarm from a not acknowledged warning.
19.2.2 Criteria for classification of
warnings:
- Conditions or situations which require immediate attention for
precautionary reasons, to make the bridge team aware of conditions
which are not immediately hazardous, but may become so.
19.2.3 Criteria for classification
of cautions:
- awareness of a condition which still requires attention out of
the ordinary consideration of the situation or of given information.
19.3.1 Alerts should be separated for the alert
handling in INS into two categories of alerts:
19.3.1.1 Category A alerts
Category A alerts are specified as alerts where graphical
e.g. radar, ECDIS, information at the task station directly assigned
to the function generating the alert is necessary, as decision support
for the evaluation the alert related condition.
Category A alerts should include alerts indicating:
- danger of collision
- danger of grounding.
19.3.1.2 Category B alerts
Category B alerts are specified as alerts where no additional
information for decision support is necessary besides the information
which can be presented at the central alert management HMI. Category
B alerts are all alerts not falling under Category A.
19.4 A classification in priorities and categories
of alerts for INS and for alerts of the individual performance
standards is attached as Appendix 5.