Detection and Notification of Navigation Hazards in presentation library 4.0 has been designed to give the mariner the option to choose the priority of the alert for certain navigational hazards.

Now go to your ECDIS to review what chart alerts your ECDIS is set to detect and ensure all safety critical areas are selected to ensure they alarm when navigating.

Your companies updated 4.0 ECDIS SMS Procedures will best reflect best practices for changes that should be made here and how it should be set up.