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ECDIS User Guide
Trial Manoeuvre
Trial Manoeuvre is a facility that allows the effect of a proposed
manoeuvre, based on rate of turn for own ship, to be displayed, both
graphically and alpha-numerically. This gives the operator the ability to
evaluate the possibility of collisions, by observing the theoretical relative
target vectors that would be produced.
The manoeuvre course and speed can be either ground referenced or
water referenced, depending on the currently selected stabilised mode, see
Sensor Data Display.
However it is recommended for Trial manoeuvres that water speed (STW)
is selected. When current speed is over ground (COG) a warning is given
when the Manoeuvre On check box is ticked that the trial course, speed
and vectors will be ground referenced.
Adjusting Trial Manoeuvre Parameters
The following parameters can be specified to
define the proposed manoeuvre:
A true course to follow after the
manoeuvre.
A true speed to be maintained during
and after the manoeuvre.
A delay time before the manoeuvre is
to start.
A rate of turn for the manoeuvre.
The ranges and default values for trial manoeuvres are shown in the table
below.
Parameter
Final True Course
Manoeuvre Speed
Time to Turn
Rate of Turn
65900012
Ranges
0 to 359.9°, in 0.1°
increments
0.0 kn to 75 kn
0 to 30 minutes in 0.1
minute increments
1°/min. to maximum set
rate of turn in initialisation
Navigation Tools
Power on Default
000.0°
15 kn
0.0min
Own ship's commissioned
standard rate of turn
5-31
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Questions and answers
HI THERE , I COULD NOT FIND THE MOB BUTTON IN THE UPPER TOOLBAR AND IN NAV TOOLS , AND THE VIDEO PLAYBACK BUTTON ON IUR SPERRY MARINWE ECDIS.
The MOB (Man Overboard) button can be found in the upper toolbar of the Sperry Marine VisionMaster FT ECDIS. It has a yellow background when the MOB event is active and a standard background color when inactive. However, there is no information provided in the context regarding the location of a video playback button.
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WHAT IS THE PROCEDURES IN MAKING PARALLEL INDEX USING SPERRY MARINE ECDIS
To make a Parallel Index (PI) using Sperry Marine Visionmaster FT ECDIS, follow these procedures:
1. Access PI Lines: Left-click on the "Parallel Index Lines" field in the NAV Tools menu.
2. Use the PI Lines Window: This window has three tabs:
- Edit Tab: Add a new PI line or set, copy, delete, rename, or realign lines to the ship's current heading.
- Display Tab: Select which PI lines to display.
3. Define Each PI Line: Set the following parameters:
- Range from the closest point to own ship
- Bearing
- Line type
- Side of the ship (port or starboard)
Up to fifteen PI lines can be displayed at once across the entire chart display in all modes.
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AIS target not showing in ecdis