The Bridge Navigational Watch Alarm System (BNWAS) main purpose is to monitor the presence of watch officers and their alertness for early detection of unsafe sailing conditions. The JCX-161 incorporates many display modes readily available on a highly visible 4.5-inch LCD display. Besides the display being fully dimmable and having backlit keys, it features dual LED backlight (white and orange), making it easy to operate in various light settings on the bridge. Also available on the unit is the emergency call function which triggers all devices (buzzers) to activate. In addition, officer call also available which provides audible notice for backup officer at 2nd stage alarm. The unit has automatic and manual operation modes. While the ship’s heading TCS or HCS is active, the set period countdown operates automatically. In case you turned on the system to operate manually countdown operates continuously. When ship is in anchorage the unit can be turned off, however emergency calls, other call functions and bridge alarm transfer are still operable.