IMO performance standard for BNWAS are as follows:
Operational modes
The BNWAS shall incorporate the following operational modes:
- Automatic (Automatically brought into operation whenever the ship’s heading or track control system is activated and inhibited when this system is not activated)
- Manual ON (In operation constantly)
- Manual OFF (Does not operate under any circumstances)
- Operational sequence of indications and alarms
Dormant period
Once operational, the alarm system shall remain dormant for a period of between 3 and 12 min (Td). At the end of this dormant period, the alarm system shall initiate a visual indication on the bridge.
