功能描述：
　　駕駛室航行值班報警系統（BNWAS）旨在監視橋樓活動并發現由于操作者失去工作能力而可能導致的海事事故，該系統監視值班駕駛員（OOW）的意識，如由于任何原因而使OOW失去履行職責的能力時，該系統將自動向船長或其他有資格的OOW報警。該系統是以一系列的指示和報警達到這一目的的，首先是向OOW提出警告，如果沒有得到應答，則將向船長或另一位有資格的OOW報警。此外，BNWAS還可想OOW提供即時求助的呼叫措施。無論船只由駕駛人員駕駛或啟用跟蹤控制系統航行時，BNWAS都應能工作，除非被船長禁止。
　　Functional Description
　　The purpose of a bridge navigational watch alarm system (BNWAS) is to monitor bridge activity and detect operator disability which could lead to marine accidents.The system monitors the awareness of the Officer of the Watch(OOW)and automatically alerts the Captain or another qualified OOW if for any reason the OOW becomes incapable of performing the OOW’s duties.This purpose is achieved by a series of indications and alarms to alert first the OOW and, if he is net responding,then to alert the Captain or another qualified OOW.Additionally,the BNWAS may provide the OOW with a means of calling for immediate assistance if required.The BNWAS should be operational whenever the ship’s heading or track control system is engaged,unless inhibited by the Captain.
　　采用標準：
　　1.  國際海事組織MSC.128(75)決議《橋樓航行值班報警系統（BNWAS）的性能標準》
　　2.  IEC62616：2010《海上導航和無線電通訊設備和系統-橋樓航行值班報警系統（BNWAS）》
　　3.  國際海事組織（IMO）A.1021(26)決議《2009警報器和指示器規則》
　　4.  IEC60945：2002《船用導航和無線電通訊設備及系統-通用要求-實驗方法和實驗結果要求》
　　Adopt standard
　　IMO Resolution MSC.128(75)Recommendation on performance standards for a bridge navigational watch alarm system(BNWAS)
　　IEC62616:2010,Maritime navigation and radiocommunication equipment and system-Bridge navigational walarm system(BNWAS)
　　IMO Resolution A.1021(26)CODE ON alertS AND INDICATOR,2009
　　IEC60945:2002.Maritime navigation and radiocommunication equipment and systems-General requirements-Metbods of testing and required test results