Guidelines for ROs when recommending an exemption for a BNWAS installed
Minimum requirements The Estonian Maritime Administration has issued Guidelines for ROs when recommending an exemption for a BNWAS installed prior to 1st of July 2011 requirement which are not in full compliance with the MSC.128(75) when the following minimum requirements are fulfilled:1. The BNWAS operational modes can be selected between Manual ON (in operational constantly) and Manual OFF (does not operate under any circumstances);2. The selection of the operational modes is protected by a key switch or password;3. Once operational the system remains dormant for a period between 3 and 12 min;4. At the end of this dormant period a visual indication is initiated on the bridge;5. If not reset, the system sounds additionally a first stage audible alarm on the bridge 15s after the visual indication is initiated;6. If not reset, the system sounds additionally a second stage remote audible alarm in the back-up officer and/or Master's location 15s after the first stage;7. If not reset the system sounds additionally a third stage remote audible alarm at the locations of further crew members min. 90s and max. 180s after the second stage;8. The audible alarm for the third stage is easily identifiable by its sound and indicates urgency. Moreover ...
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