‌Mandatory Carriage Requirement for Bridge Navigational Watch alarm System requires is entered into force from 2011.01.01 with amendment of SOLAS Reg. V/19.2.2 in accordance with IMO Res. MSC. 282(86)
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‌1. Application
‌ 1) All cargo ships of 150 G.T and Upwards
‌ 2) All passenger ships irrespective of size
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‌2. The purpose of a BNWAS is to monitor bridge activity and detect operational disability which could lead to marine accidents.