Bridge Navigational Watch Alarm System (BNWAS)

A BNWAS is a device which triggers an alarm if the Officer on Watch (OOW) becomes incapable of performing the OOW’s duties.

Contact Sofio Marine for any BNWAS advice.

More info on BNWAS

BNWAS Implementation Deadlines:

  •  July 2011 for all new builds of 150 gt or over – (keel lay base)
    Ships constructed prior to 1 July 2011 will have to fit the BNWAS “at the 1st survey”
  • 1 July 2012 for cargo ships of 3000 gt or over and all passenger ships.


  • BNWAS deadlines1 July 2013 for cargo ships of 500 gt or over but less than 3000 gt.
  • 1 July 2014 for cargo ships of between 150 gt or over but less than 500 gt.
More info on BNWAS deadlines
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