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 188.8.131.52 in vessels other than passenger vessels, the
second and third stage remote audible alarms may sound in all the locations mentioned in paragraphs
184.108.40.206 and 220.127.116.11 at the same time. In case the second stage audible alarm is sounded in this way,
the third stage alarm may be omitted.
VESSELS ALREADY EQUIPPED WITH A BNWAS
Generally, all BNWAS already installed on vessels shall conform to MSC.128(75) and can be accepted
when a copy of type approval certificate is submitted to DBS Head Office based on the following
IMO resolution A.694(17), MSC.128(75), MSC.191(79), MSC/Circ.982
Test standards: IEC60945, 61162, 62288, 62616
According to IMO Resolution MSC.282(86) a BNWAS installed prior July 1, 2011 may be subsequently
be exempted from full compliance with the MSC.128(75) as the discretion of the Administration.
Therefore, ship Owners / Operators are encouraged to contact DBS Head Office in order review the
flag-specific requirements for vessels flying their flag.