AMI BNWAS -
Bridge Navigation Watch Alarm System

BNWAS-KW810

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We are now now supplying and installing the latest AMI Marine's KW810 BNWAS (Bridge Navigational Watch Alarm System) to meet the compliance date with the latest type approved equipment from AMI, tested in compliance with IEC 61626.

 

Bridge Navigation Watch Alarm Systems were introduced to ensure the bridge is always manned and under the control of the OOW (Officer of the Watch) at all times. The BNWAS must be reset by the Officer of the Watch within a preset time limit.

 

BNWAS is essential for one-man bridge operation, where the vessel is dependent on a single OOW for continuing on a safe passage.

 

 

 

 

 

 

BNWAS Implementation Schedule

 

BNWAS begin a sequence of alarm stages if the OOW is unable to interact with the system. They are:

  • Stage1: Audible and visual alarm - only local to the wheelhouse
  • Stage 2: Additional audible and visual alarm in selected Officer's quarters
  • Stage 3: Additional audible and visual alarm throughout the ship

The KW810 has an optional motion sensor, in addition to the standard Push-to-Reset button, which detects the OOW's movement and automatically resets the BNWAS counter. This allows the OOW to continue his duty without the interruption of having to reset the alarm every 3 to 12 minutes.

 

IMO Resolution MSC.282(86) (adopted June 2009) specifies BNWAS as a mandatory requirement on the following vessels:

  • 1st July 2011 - Cargo vessels of 150 gt and greater and all passenger ships built after this date, irrespective of size.
  • 1st July 2012 - Passenger vessels irrespective of size built before 1st July 2011, not later then the 1st survey* after 1st July 20112.
  • 1st July 2012 - Cargo vessels of 3000 gt and greater built before 1st July 2011, not later then the 1st survey* after 1st July 20112.
  • 1st July 2013 - Cargo vessels of 500gt and greater, but less than 3000gt built before 1st July 2011, not later than the 1st survey* after 1st July 2013
  • 1st July 2014 - Cargo vessels of 150gt and greater, but less than 500 gt built before 1st July 2011, not later than the 1st survey* after 1st July 2014

BNWAS will be a requirement of all ships shown above for all voyages and is not exclusive to ships on international voyages.

*Refer to the Unified interpretation of the term "first survey" referred to in SOLAS regulations (MSC. 1/Circ. 1290)

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