Vector; Types Of Vectors - Furuno FAR-1416 Operator's Manual

3. TARGET TRACKING (TT)
3.8

Vector

The vector on a tracked target is a line that represents the target's speed and course.
The tip of vector is the predicted target position after the set vector time has passed.
You can predict a possible collision with another target by extending the vector length
(time).
Vector time
Vector time is set at [10 min].
To change the vector mode, move the cursor onto the vector reference indication in
the VECTOR box, then press the left button. The vector reference cycles through
True and Relative with each press the left button.
3.8.1

Types of vectors

True vector
True vector indicates the true movement of own ship and other ship relative to a land-
mass. Use this mode to identify a distinguish target from a fixed target.
Relative vector
Relative vectors on targets that are not moving over the ground such as land, naviga-
tional marks and ships at anchor will represent the reciprocal of own ship's ground
track. A target whose vector passes through own ship is on a collision course. (Dotted
lines in the figure are for explanation only.)
TT
Own Ship
AIS
True vectors in ground
stabilization
Ground stabilization/Water stabilization
The true vector mode display can be ground stabilized or sea stabilized. You can
switch between ground stabilization and sea stabilization at [SHIP SPEED] in the
[SHIP SPEED SETTING] menu. Select [LOG (BT)] for ground stabilization or [LOG
(WT)] for sea stabilization. In the true vector mode, [T] is displayed in the vector mode
box.
Sea stabilization is a display method using heading and speed through the water.
Ground stabilization uses speed over the ground or current correction. When accura-
cy is low, current is corrected.
3-10
Predicted target position after 10 min.
Vector
Current target position
Current
TT
(Set and drift)
Buoy
Own Ship
AIS
True vectors in sea
stabilization
TT
Buoy
Own Ship
AIS
Relative vectors
Buoy