Mob Mode; Dsc Distress Notification - Raymarine LIGHTHOUSE 4 Operation Instructions Manual

1. The MOB alarm can be activated by pressing and holding on the MOB
icon on the Homescreen.
2. The MOB alarm can also be activated by pressing and holding on the
waypoint / MOB icon located at the top of all MFD apps.
The MOB feature requires your vessel to have a valid position fix from a GNSS
(GPS) 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 displayed along the top of the screen. The
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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.

MOB mode

MOB can be set to Dead Reckoning or Position mode. Dead Reckoning
mode will take into consideration the effects of wind and tides. This usually
provides a more accurate course. Position mode does not take these factors
into account. You can change the MOB mode at anytime from the Alarms
menu: [Homescreen > Alarms > Settings > MOB data type:].

7.9 DSC distress notification

The MFD can display DSC distress alert information received by a connected
DSC VHF radio.
When DSC alarms are enabled ([Homescreen > Alarms > Settings > DSC
alarms]) if a DSC distress call is received by your DSC VHF radio a notification
is displayed on the MFD.