Consult Martek Marine's entire Navgard catalogue on NauticExpo. Navgard™ - the market's easiest to install and fully compliant BNWAS with Up to 8No. passive infra-red PIR motion sensors; Reset Inputs: Up to 6No. manual pushbuttons; Jun 7, 2016 - Operations & Installation Manual Navgard? – BNWAS Revision 1 Navgard? Operations Manual Copyright ? 2011 Martek. All rights reserved. No part of this Navgard™ is a Bridge Navigational Watch Alarm System (BNWAS) PIRs and/or manual resets both inside the bridge and weatherproof versions for the bridge Navgard™ is a Type Approved bridge navigational watch alarm system (BNWAS) from world leading marine Martek Navgard™ is a Bridge Navigational Watch Alarm System (BNWAS) the system is also available with just manual reset functionality rather than PIRs to Jan 5, 2018 - Navgard® – BNWAS. Revision 1. Page 2. Navgard™ Operations Manual BNWAS. M6 screw fastener. Figure 3: Navgard Control Panel Bulkhead mount equipment, Martek Marine has developed Navgard™ - the NAVGARD™ is the only BNWAS approved by ALL major Up to 6No. manual pushbuttons;. 1No. equipment, Martek Marine has developed Navgard™ ? the NAVGARD™ is the only BNWAS approved by ALL major Up to 6No. manual pushbu ons;. 1No.