Northrop Grumman Sperry Marine VisionMaster FT, User Manual

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Navigation Tools Radar/Chart Radar User Guide
6-40 65900010
A minimum of three LOPs are required for a Visual, Range, or Composite
type fix. Only two LOPs are required for an EP Fix.
The table below gives a description of each LOP fix label.
Label Description
EP Position was obtained using two points.
V
Position was obtained by making only bearing observations.
R
Position was obtained by making only range observations.
VR
Position was obtained by making both bearing and range
observations.
3. Right click on the display to create the first LOP, this could be a
mariner object, the clicked location, or a specified Lat/Long
location. From the semi-transparent context menu select
Add Line
Of Position (LOP) .
The location, or selected object, is highlighted with a red circle
symbol, with a red shaded background colour inside the circle. The
circle symbol represents the active point used as a bearing object
for calculating the LOP fix.
4. The Line Of Position window appears with a list of potential
locations to select, with the most valid object/location underneath
Clicked Location. Either select the object/location from the list; or,
to specify a Lat/Long position, select
Manually Specified Below
and enter the Lat/Long coordinates.