CARRIAGE REQUIREMENTS FOR A BRIDGE NAVIGATIONAL WATCH ALARM SYSTEM
SOLAS regulation V/19 as amended through IMO resolution MSC.282(86) and entered into force January 1, 2011 established and implemented schedule for the carriage of BNWAS for new and existing ships.Based on IMO resolution MSC.282(86) as of July 01, 2013 all cargo ships with gross tonnage more
than 500 but less than 3000 constructed before July 1, 2011 shall also be fitted with a BNWAS.
The purpose of a BNWAS is to monitor the bridge activity and detect operator disability which could
lead to marine accidents. The system monitors the awareness of the Office of the Watch (OOW) and
automatically alerts the Master or another qualified OOW if for any reason the OOW becomes incapable
of performing the OOWs duties. This purpose is achieved by a series of indications and alarms to alert
first the OOW and, if he is not responding, then the alert the Master or another qualified OOW.
DBS Surveyors shall verify the installation of BNWAS during the first upcoming survey of safety
equipment (please refer to IMO MSC.1/Circ.1290 for the unified interpretation of the term “first
survey”). The performance standards shall be in accordance with IMO MSC.128(75). It is important to
note that as per IMO MSC.128(75), paragraph 22.214.171.124 in vessels other than passenger vessels, the
second and third stage remote audible alarms may sound in all the locations mentioned in paragraphs
126.96.36.199 and 188.8.131.52 at the same time. In case the second stage audible alarm is sounded in this way,
the third stage alarm may be omitted.