Type Approved by GL, RMRS & CCS for full compliance with IMO Resolution MSC. 128(75) & IEC 62616 (GL), the Navitron NT990 BNWAS is available as a basic system to operate proprietary alarm units etc. (if appropriate) or, as an expanded system complete with selector units, remote resets including movement detectors and individual cabin and / or crew call audible alarms. The resultant alarm system provides a regulation safety monitor requiring regular acknowledgement (Reset) by the duty watch personnel at selectable time intervals between 3 and 12 minutes.