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The MOB feature requires your vessel to have a valid position fix from
a GNSS receiver. Dead reckoning mode also requires Heading and
Speed data.
When you activate the MOB alarm:
• an audible alarm is sounded which is repeated every 30 seconds
until the alarm is cancelled.
• a MOB Databar providing Bearing and range from MOB, and
elapsed time since MOB was initiated, is placed along the top of the
screen. The Databar persists across apps and the Homescreen, and
remains until the MOB alarm is cancelled.
• a MOB warning is displayed in the bottom of the screen which
requires acknowledgement.
• the Chart app is placed in a special MOB mode to help you navigate
back to the point your vessel was at when the MOB was initiated.