Sperry Marine VISIONMASTER FT ECDIS-E, User Manual

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ECDIS-E User Guide Basic Operation of ECDIS-E
65934012 3-5
Own Ship Vector
The own ship vector symbol is a line indicating ship’s direction and speed.
The end of the line is shown with a double arrowhead when in ground
stabilisation mode, and a single arrowhead when in water stabilisation
mode. Vector arrow heads can be switched on and off from the Ownship
Display Settings.
The vector line begins at own ship’s CCRP and is drawn with a length
corresponding to the distance on the chart display that own ship will cover,
given its current speed, in the vector time chosen, see Vector Modes.
When in ground stabilised mode, the vector line is drawn to reflect the COG
shown on the sensor data display. When in water stabilised mode, the
vector line is drawn to reflect the course through the water based on the
current heading shown on the sensor data display.
Own ship vector is not drawn if Predicted Vector is enabled (see Display
Settings, Ownship) and the stabilisation mode is ground based. In water
stabilised mode own ship vector is drawn in addition to the predicted
vector.
This is the default presentation, set at commissioning. Ownship
vector and predicted vector may be selected for simultaneous
display, but this is NOT the recommended setting.
If own ship vector's end point is not on the available area of the display, a
semicircle is drawn, centred at the point that the vector intersects the edge
of the available area.
Own ship vector is shown in yellowish-orange when the data received from
the sensors used to draw the vector (water or ground stabilised) is invalid
or degraded.
If enabled, tick marks will be displayed along the vector length at one
minute intervals. The tick marks can be switched on or off, and the tick
mark interval time adjusted from the Display Settings sub-menu in the NAV
Tools menu.