Move Own Ship's Display Position [Off Cent]; Display Other Ships' Trails [Trails] - JRC JMA-610 Series Instruction Manual

3.5.5 Move Own Ship's Display Position [OFF CENT]

The own ship's position can be moved from the display center to stern or bow direction.
Procedures 1

3.5.6 Display Other Ships' Trails [TRAILS]

Other ships' movements and speeds can be monitored from the lengths and directions of their trails, serving for
collision avoidance.
Procedures 1
Erasing Trails Data
Procedures 1
Trails Motion Mode
There are two types of trails: relative motion trails and true motion trails.
Relative motion trails: The system plots the trails of a target at a position relative to the own ship.
True motion trails:
Press [OFF CENT] key.
The display at the upper right of the screen (Fig.2.3- ) will be changed.
The own ship's position will be moved from the display center as following each time the
[OFF CENT] key is pressed:
On center
off
Put the cursor on
[ENTER] key .
Trails length will be changed as following sequence .
Trails length will be switched as following each time TRAILS is pressed.
Put the cursor on
All the stored trails data will be erased.
The operator can easily judge whether the target is approaching the own
ship.
While the own ship is moving, the system also plots the trails of land and
other fixed targets.
The system plots the absolute motion trails of a target, irrespective of the
own ship's position.
The operator can easily judge the course and speed of the target.
The system does not plot the trails of land and other fixed targets.
60% of display radius
in the stern direction
center 1
TRAILS at the upper right of the screen and press
TRAILS and hold down more than 2seconds.
3-20
40% of display radius
in the stern direction
center 2
20% of display radius
in the stern direction
center 3