AlphaBNWAS Main Unit Mk2

The AlphaBNWAS is an aid to help protect the Ship's Officers required to ensure a presence of the Officer of the Watch on the bridge and to carry out one man bridge duties. A BNWAS monitors bridge activity and detects any absence on the bridge that could lead to shipping accidents. The BNWAS system monitors the awareness of the Officer of the Watch (OOW) and warns the Master and/or another qualified Officer if the Officer of the Watch becomes incapable of performing duties through whatever cause.

The new MSC.128(75) rules will make a fully approved Bridge Navigational Watch Alarm System mandatory on SOLAS vessels of 150GT and up and passenger vessels irrespective of size, having to be installed from the 1st of July of 2011 up to 2015 depending on the type and GT of the vessel. Ship owners can now meet these requirements in a cost effective way by choosing the Alphatron Watch Alarm system called the AlphaBNWAS.

The AlphaBNWAS Main Unit is the heart of the Bridge Navigational Watch Alarm System. The Main Unit is type approved according to the current legislation for Bridge Navigational Watch Alarm Systems, as laid down by the IMO in resolution 128(75) and can be applied on all seagoing vessels.

The main unit can be activated automatically or manual and has adjustable running times of 3 and 12 minutes. Communication to VDR is integrated and the autopilot can also be connected to the BNWAS. The AlphaBNWAS Main Unit is equipped with an RS-485 interface. With this interface, it is possible to read all available information of the Main Unit. The protocol that is used is NMEA, this protocol is supported by almost every Voyage Data Recorder (VDR). Messages are sent on event and cyclically (ALR every 35 s), incl. BAM alerts.
The system can be expanded with remote reset units and PIR sensors (subject to flag/class). A Selector unit is also an option to regulate the different officers on duty.

Advantages:

• Saves expensive modifications
• Communication interface to VDR and ECDIS (NMEA)
• Extendable by means of extra reset buttons
• Dimming function for LED’s and backlight in the front panel
• Autopilot input