2. TARGET TRACKING (TT)
2-10
calculated. A negative TCPA value means that you have already passed the CPA and
the target is going away from own ship.
How to display TT data
Click the target on [TT LIST] to show the [TT INFO] window. See section 2.8.
How to sort the TT list
You may sort the TT list by RANGE, CPA, TCPA as follows.
1. Right-click the [LIST] icon for TT to show the [TT-
LIST] window.
2. Click [SORT BY].
3. Click the sorting item desired, by [RANGE], [CPA]
or [TCPA].
4. Click outside the menu window to close the menu.
2.10
Vector Modes
Target vectors can be displayed relative to own ship's heading (Relative) or north
(True).
2.10.1
Description of vectors
Sea stabilization is a mode where own ship and all targets are referenced to the sea
using a compass heading and single-axis log water speed inputs. Ground stabilization
is a mode where own ship and all targets are referenced to the ground using the
ground track or set and drift inputs. If the accuracy seems unsatisfactory, enter set and
drift corrections.
True vector
Own ship and other ships move on the display at their true speeds and courses. This
mode is useful for distinguishing moving targets from stationary ones.
Relative vector
Other ships move relative to your ship. This mode is useful for finding ships on a col-
lision course with your ship. A ship whose vector passes through your ship's position
is on a collision course.
[TT-LIST]
1 BACK
2 SORT
BY
RANGE
/CPA/TCPA
True vectors in head-up mode
Relative vectors in head-up mode
B
Own ship
A
B
Own ship
Buoy
Buoy
Target on
collision
course
Target on
collision
course
A
