Lowrance HOOK-4 - Navigation Parameters; Arrival Radius and Off Course Distance; Bearings and Magnetic Variation

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PB
Chart Operation | HOOK series
Chart Operation | HOOK series
Arrival radius
Sets the arrival radius threshold for the Arrival
alarm. The arrival alarm will sound when your
vessel comes within a selected distance (arrival
radius) of the destination waypoint.
Off Course Distance
Sets O Course Distance threshold for the O
Course alarm. When the selected o course dis-
tance is exceeded, the O Course alarm will sound
when the alarm is enabled.
Bearings
Controls whether bearing will be calculated using
True North or Magnetic North. Magnetic North
should be used when navigating with a compass
course or heading; otherwise use the default set-
ting, True North.
Magnetic variation
Controls whether magnetic variation will be calcu-
lated using Automatic or Manual settings. Magnet-
ic variation is the angle between magnetic north
and true north. The automatic setting reconciles
the variation for you.
WARNING: You should only use the
Manual magnetic variation setting if
you have variation information from a
veried source.