The Furuno BR-500 is the newest, IMO-compliant BNWAS (Bridge Navigational Watch Alarm System). BNWAS is required on all IMO vessels (regulation MSC.128(75)). July 2012 was the primary fitting date for most vessels (existing passenger and cargo vessels of 3000+ GT).
Basically, BNWAS is an alarm/alert system activated on the bridge, navigator staterooms, and living quarters, if it senses inactivity on the bridge for a predetermined period of time.
The Furuno BR500 BNWAS monitors the watch officer’s presence through watch safety system functions. At pre-set intervals, a watch officer is required to press a Timer Reset Button or to operate navigation equipment (i.e.: ECDIS, Radar, etc.). If the officer fails to carry out any of the tasks, visual and audible alarms ensue in the wheelhouse. If no response, the BR500 transfers the alarms to other sections of the vessel to inform backup officers.
Added features include easy-to-read displays, outputs to VDR, with options for multiple languages, motion detector & flash beacon.