The BNWAS (“Bridge Navigational Watch Alarm System”) is a safety system that requires the officer on duty to press a button within a set time. When tired, this system prevents the officer from falling asleep.
The system is simple, the officer on duty sees a visual indication on the bridge every few minutes (depending on the settings), if there is no response within 15 seconds by pressing the button, a sound is emitted. This effect continues until an alarm is triggered in all booths. De Boer Marine supplies the BNWAS of the Marble brand.