The BNWAS (Bridge Navigation Watch Alarm System) is essentially a timer alarm system that forces watch officers to reset the system, in periodic time intervals, in order to ensure that they are fully alerted (not sleeping, paying computer games etc, etc).
The BNWAS is only required to be operational whenever the Ships Heading, or track control system is engaged, unless this manually over-ridden by the master onboard.
Note: For any vessel other than a passenger ship, the second and third stage alarms, may sound in all of the above listed locations.
The Reset Function is Only available on the Bridge, and can be achieved by Push Buttons, which are generally fitted in the key navigational areas on the Bridge (Radio Console, Chart Table, Safety Console and Bridge Wings). However, as the BNWAS is required to be reset every 3-12x Minutes, it’s also possible to connect Motion Sensors which will automate the BNWAS re-set process, however, certain Flag States (e.g Singapore) will not allow PIR Motion sensors.
The IMO has mandated that all passenger and cargo ships must fit the BNWAS under SOLAS Chapter V Regulation 19, as they recognize that many bridge related marine incidents could be avoided if an effective and operational bridge navigational alarm system was fitted onboard.
Existing ships will be required to retrofit the equipment “at the first survey”, in accordance with the application schedule below, based on ship type, size and keel laying date.
Note: The BNWAS must be connected to the SVDR/VDR (If installed onboard)
AWA Marine promotes the Interschalt BNWAS Hardware for Implimentation onboard, as this is one of the most reliable, and also most economical systems currently available in the market.
Should you require any additional information and/or an offical proposal for the Interschalt BNWAS Hardware onboard, then please contact our office