Routes ECDIS-E User Guide
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The following leg attributes are read-only and will update automatically as
the route waypoints or route data are changed:
Leg Distance - the leg distance between each waypoint.
Leg Bearing - the bearing of the leg in degrees.
To edit the Approaching Leg data do the following:
1. To change the leg speed or off track limit click in the relevant field,
the text changes to green (editable). Move the trackball left or right
to change the values.
2. To change the departing or approaching leg from Rhumb Line to
Great Circle click on the drop down arrow to the right of the field
and make the desired selection.
3. To change the XTD limits click in the PORT or STBD field, the text
changes to green (editable). Move the trackball left or right to
change the values and left click to accept. The values defined will
only apply to that leg.
Turn
The Turn area enables you to edit the following turn attributes:
Turn Rate - the maximum turn rate is 1200° /minute.
Turn Radius - the maximum turn radius is 10 NM.
Speed - speed of turn, the maximum speed is 99 kn
XTD Limits - the cross track distance in metres that the ship can
stray from the route turn track line before an off track error alarm
occurs. Different values may be entered for the Port and Starboard
side of the route turn track line.
To change the turn rate, turn radius, speed of turn or XTD limits, click in the
relevant field and the text changes to green (editable). Move the trackball
left or right to change the values.
The turn rates for each turn must be less than or equal to the Own Ship’s
configured maximum turn rate.
The speed of turn used to calculate the turn rate is based on the displayed
turn radius data. However if the turn rate data is modified the turn speed is
used to calculate new turn radius data. Often the turn speed will be the
same as the approaching and/or departing leg. However, the system
provides the flexibility to enter different values. This is useful when it is
important to strictly adhere to a specific turn rate due to vessel type or
conditions.
The turn speed must be less than or equal to the own ship’s configured
maximum speed. When the turn speed is adjusted the read only value to
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