The Lilley and Gillie John Lilley & Gillie Walker BV Type approved BNWAS (Bridge Navigational Watch Alarm System) basic system, Part No: F2, is designed to meet the International Maritime Organization (IMO) legislation for safety on board ships. This system is approved for use on vessels registered under Class NK and Vietnam Register (VR). It monitors the navigational watch on the bridge and ensures that the crew is alert and capable of taking control of the ship in case of emergency, providing critical safety and regulatory compliance.