Jeppesen Marine Workboat Navigator 1.3 - Manual (Page 140)

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Jeppesen Workboat Navigator User’s Guide Jeppesen Workboat Navigator User’s Guide
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Jeppesen Workboat Navigator User’s Guide Jeppesen Workboat Navigator User’s Guide
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13
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T
arget
T
racking
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AIS Targets in Workboat Navigator
There are several types of AIS targets. Their behavior dictates how they appear on-
screen. It is important to recognize AIS symbols and their meaning. The following
outlines AIS target symbols and their meanings.
TIP:
If symbols appear in red, they pose a danger to your boat based on
CPA or TCPA as configured in System Menu | Tools/Settings | Options |
Targets.
AIS Symbols
Icon Topic Description
AIS Active State
Boat appears as a triangle oriented by
heading, or COG if heading is missing. If
heading is available, heading line will be
visible as a solid line; COG as a dashed
line. Dash and space (- ) = 1 minute.
Target Indicating
Turn
Boat appears as a triangle with a flag of
fixed length indicating turning path.
Active State -
True Scale Outline
At high zoom, triangle may be replaced by
a true scale outline of target boat relative
to your boat's reference position, oriented
along your boat's heading. The cross hair
on the true scale outline of target boat
indicates the AIS antenna position.
Active State -
Target Indicating Turn
Boat appears as a triangle with a curved
dashed line indicating intended turning
path.
Each dash and space (- ) = 1 minute.
Active State -
Incomplete Data
The boat appears as a broken triangle
oriented by heading, with solid heading
line, or COG if heading is missing.
Active State -
Past Track
Past track is indicated by a series of dots.
Lost State
Triangle with bold solid cross indicates
that no information for the target has been
received and information is not available.
Triangle oriented per last known value.
Cross has fixed orientation.
Table 13.3 - AIS Symbols