Humminbird NS25 Operation Manual page 67

CURSOR
Cross-hair line in map views used to interact with on-screen information.
COURSE HISTORY
A course history line is shown in the graphics area, attached to the present indicator. This shows
the history for your course, or where you have been. It shows the history for your course, or
where you have been. It is helpful in visualizing the progress, or retracting your course to return to
the starting point.
DD degrees MM>MMM
Displays position coordinates in Latitude/ Longitude showing degrees (DD degrees) and decimal
minutes (MM.MMM). This provides a highly accurate position readout.
DD degrees MM' SS"
Selects position readout in Latitude/Longitude showing degrees (DD degrees), minutes, (MM'),
and seconds (SS"). This is the traditional but less precise method of coordinate display.
GO TO
Creates a temporary route to a point selected.
KNOT
Nautical mile per hour. The normal measurement of speed for boats, expressed relative to
nautical miles instead of statute miles.
LORAN
Long Range Radio Navigation. It is a series of chains of ground-based transmitters located along
caostal areas world-wide. Loran receivers receive transmitted pulses from a master station and
two secondary stations, and use TD's (select position readout in Time Differentials) between
pulses to calculate its position relative to the transmitters.
MAGNETIC NORTH