Sperry Marine VISIONMASTER FT ECDIS-E, User Manual

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Routes ECDIS-E User Guide
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Required Speed
Required Speed enables the user to specify a
desired arrival time for any selected waypoint on a
monitored route. When a desired arrival time is
entered the system calculates own ship speed
required to the present leg, and speed required for
the remaining legs in order to achieve this arrival
time.
To change the desired ETA and required speeds
do the following:
1. To change the ETA:
i. Select the waypoint from where the speed
calculations are to be made.
ii. Click inside the Desired ETA field on the
specific data to be changed. The field
data changes to green (editable), the
selected data is highlighted and an editing
window appears directly below the ETA
field.
iii. To move the date or time back click on
the Down arrow, to move the date or time forward click on the
Up arrow. To move the highlight back or forward (e.g. from
Month to Year) click on the side arrows.
iv. With the correct ETA data displayed click on the OK button.
2. When the desired arrival time is set the
system calculates the speed required on the
present leg and remaining legs of the route in
order to achieve the specified ETA. The
required speeds are shown in the
Calculated
fields.
3. To specify a speed for the current leg and
remaining legs select the Manual radio
buttons and click in the Manual fields, the text
changes to green (editable). Move the
trackball right to increase the value and left
click again to accept the value.
4. Click the Calculated radio button to see the speed required to
meet the desired ETA on the current leg and remaining legs based
on the manual speeds entered.