Displaying Other Ship's Trails (Trails); Trails Motion Mode - JRC JMR-5410-4X Instruction Manual

5.4.9

Displaying other ship's trails (Trails)

Other ships' movements and speeds can be monitored from the lengths and directions of their trails,
serving for collision avoidance.

5.4.9.1 Trails motion mode

There are two types of trails: relative motion trail and true motion trail.
Relative motion trail:
True motion trail:
Land
Trail Ship
True Motion Trail
While the true motion trail mode is active, this equipment enables the continuous use of true motion
trail even if any of the following operations is performed:
• Motion mode change (TM/RM)
• TM reset
• Azimuth mode change
• Off Centre
Memo
Accurate true bearing signals and speed signals are necessary for using the true motion trail
mode.
The system plots the trails of a target at a position relative to the own ship.
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.
Trail Ship
Relative Motion Trail
5-23
Land
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