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4. AIS OPERATION
4-6
4.10 Vector Attributes
4.10.1 What is a vector?
A vector is a line extending from a tracked target. A vector shows speed and course
of the target. The top of a vector shows estimated position of the target after the se-
lected vector time elapses. If you increase the vector length (time), you can evaluate
the risk of collision with any target.
4.10.2 Vector time and vector reference
1. Press the MENU key to open the menu.
2. Use S or T to select [Target] and press the ENTER key.
3. Use S or T to select [Vector Time] and press the ENTER key.
Vector Time setting window
4. Use S or T to select time and press the ENTER key.
5. Use S or T to select [Vector Reference] and press the ENTER key.
Vector Reference options
6. Use S or T to select [Relative] or [True] then press the ENTER key. This function
is not activate for [IEC] or [Russian-River] purpose. The mode is set to [True].
[Relative]: Other ships’ vectors are displayed relative to your ship. This mode
helps find targets on a collision course. If a ship is on a collision course with your
ship, the vector of a ship points toward your ship position.
[True]: Your ship’s and other ships’ vectors are displayed at their true motions.
This mode helps see the differences between moving and stationary targets.
7. Press the MENU key to close the menu.
6min
( 1min~30min)
True
Relative