BRIDGE NAVIGATIONAL WATCH ALARM SYSTEM HLD-BNWAS 600-Highlander

Product Overview

The HLD-BNWAS 600 is Highlander’s 2nd generation bridge navigational watch alarm system, a mandatory and highly cost-effective shipboard safety system built with the very best in electromechanical componentry and microelectronic design. Its purpose is to ensure that the watch officer remains alert while on bridge duty, and to immediately notify fellow crew members if he falls asleep or becomes incapacitated.

The BNWAS operates on the logic sequence defined in IMO Resolution MSC.128(75) and IEC 62616, whereby the Officer of the Watch (OOW) needs to periodically press a button to reset a countdown sequence. At the end of that sequence — called the "dormant period" (selectable from 3 to up to 12 minutes) — the BNWAS flashes lights in the bridge wheelhouse. The OOW then has 15 seconds to press the reset button. If he fails to do so, an audible alarm is sounded only in the wheelhouse. He then has 15 more seconds to press the reset button. If he still does not, a 2nd stage alarm is triggered, whereby loud alarms are emitted by speaker devices fitted in the back-up officer's and/or master's cabins. Finally, there is a 3rd stage alarm in which even more speaker devices, located in the cabins of additional crew members, sound. The 3rd stage alarming is triggered if the system is not reset within 90 seconds of the 2nd stage alarming.

Product Features