Minimum requirements

Regulations from IMO’s Maritime Safety Committee (MSC) requires carriage of a BNWAS Bridge Navigational Watch Alarm System complying with IMO performance standards.

BNWAS minimum requirements:
To find out how many alarm units you will have to install, please see IMO rec MCS 128-75 chapter: 4.1.2.4 – 4.1.2.6
“The BNWAS should additionally sound a first stage audible alarm on the bridge 15 s after the visual indication is initiated.

If not reset, the BNWAS should additionally sound a second stage remote audible alarm in the
back-up officer.s and/or Master.s location 15 s after the first stage audible alarm is initiated.

If not reset, the BNWAS should additionally sound a third stage remote audible alarm at the locations of further crew members capable of taking corrective actions 90 s after the second stage remote audible alarm is initiated.”

To find out how many reset units you will have to install, please see IMO rec MCS 128-75 chapter: 5.1.4
“Means of activating the reset function should be easily accessible from the conning position, the workstation for navigating and manoeuvring, the workstation for monitoring and the bridge wings.”