Sperry Marine Visionmaster FT ECDIS, Руководство пользователя

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ECDIS User Guide Navigation Tools
65900012 5-25
Ownship History
Ownship history tracks are a series of lines
indicating the past locations of ownship as
defined by position sources. There are two
types of history track:
•
Primary - a line indicating the past location
of ownship as defined by the configured
position sensor (usually GPS).
•
Position Sensor tracks - a line indicating
past locations as defined by position data
sources,
Both sets of history tracks may be displayed
simultaneously. The history tracks are
differentiated by line style and displayed in the
same colour as the heading line. Primary
history tracks are displayed as a thick solid line,
the position sensor track line is displayed as a
thin line.
Past position dots can be displayed on the
history tracks, spaced at operator selected
intervals.
Event marks may be added at any time to
ownship's history track.
Details of past position dots and event marks
may be displayed.
Primary History Track
To activate primary history track, tick the Selected Sensor (Primary) box,
the screen will show a solid line with a series of past position dots. The
number of dots shown will be based on the maximum length of the track
and the spacing of the position dots.
To turn off the primary history track untick the Selected Sensor (Primary)
check box.
When the configured position source is changed, the primary history track
transitions to the newly selected position source maintain a smooth
continuous line.