SAFETY INSTRUCTIONS
iv
The TT tracks and plots the movement of
up to 100 radar targets and fully complies
with IMO standards for TT.
Tracking accuracy is affected by the
following:
▪ Tracking accuracy is affected by course
change. One to two minutes is required to
restore vectors to full accuracy after an
abrupt course change. (The actual amount
depends on gyrocompass specifications.)
- Echo intensity
- Radar transmission pulse width
- Radar bearing error
- Gyrocompass error
- Course change (own ship and target)
▪ The amount of tracking delay is inversely
proportional to the relative speed of the
target. Delay is approx. 15-30 seconds for
the higher relative speed; approx. 30-60
seconds for the lower relative speed. The
following factors can affect accuracy:
The data generated by TT and AIS are
intended for reference only.
Refer to official nautical charts for detailed
and up-to-date information.
CAUTION
