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Basic Operation
Once a TracBack has been activated, the GPSMAP 276C divides the track into segments called ‘ legs’.
Up to 300 temporary ‘turns’ are created to mark the most signifi cant features of the track in order to
duplicate your exact path as closely as possible. To get the most out of the TracBack feature, remember
these tips:
• Always clear the track log at the point that you want to go back to (such as a dock or camp site).
• There must be at least two track log points stored in memory to create a TracBack route.
• The ‘ Record Mode’ option on the ‘Active’ tab of the Track Tab must be set to ‘Fill’ or ‘Wrap’.
• If the track log ‘ Interval’ option on the ‘Active’ tab is set to the ‘Time’ option, the route may not
Navigate your exact path (keep the interval set to ‘Resolution’ for best performance).
• If the receiver is turned off or satellite coverage is lost during your trip, the TracBack draws a
straight line between any point where coverage was lost and where it resumed.
• If the changes in distance and direction of your track are too complex, 300 waypoints may not
mark your path accurately. The receiver then assigns the 300 waypoints to the most signifi cant
points of your track and simplifi es segments with fewer changes in direction.
Man OverBoard ( MOB)
The Man OverBoard function (MOB) lets you simultaneously mark your present position and create a
direct route back to that position for quick response to emergency situations.
To activate the MOB function:
1. Press and hold the NAV/MOB key, or press the NAV/MOB key twice.
2. Press
ENTER/MARK to confi rm and begin navigating to the MOB position.
Once a MOB has been activated, an ‘MOB’ waypoint with an international MOB symbol is created
and the unit begins actively navigating to that point. Use any of the Navigation Pages to guide you back
to the MOB point. The MOB waypoint is stored in the waypoint list and may be deleted like any other
waypoint.
Navigating in Marine Mode
Navigate Options
Accessed by pressing NAV/MOB key
Man OverBoard confi rmation screen
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