Code No: 948
Video Running Time: 27 minutes
This training package provides an introduction to the three
major technologies which make up Target Tracking Devices and
describes the relationship between them. It covers Automatic Radar
Plotting Aids, (ARPA); Automatic Identification Systems, (AIS); and
Electronic Chart Display and Information Systems, (ECDIS) and
demonstrates how these technologies are increasingly being
integrated into displays.
The package is aimed at the deck team. It incorporates original
dramatic and probing techniques. Simulated incidents are acted out
and explained with a mix of people in varying situations and
different locations.
Using a dramatisation of a near miss at sea to illustrate how
misreading information on displays can lead to dangerous
situations, it, identifies the strengths and weaknesses of each
technology and emphasises the importance of using them together to
mitigate weaknesses. The theme of 'cross checking
information' is a re-current theme throughout and includes
advice on how to balance information from displays with that of
other instruments, such as log and gyro as well as visual
sightings.
The use of ARPA systems is described in depth, with emphasis on
its prime role for collision avoidance at sea. The package explains
the proper use of True and Relative Vectors, True and Relative
Motion as well as North Up and Head Up displays. It goes on to
demonstrate the use of the 'Trial Manoeuvre' facility to
predict outcomes.
Ground and sea stabilisation are covered together with an
explanation of the differences between Radar and GNSS
positioning.
In summary, key messages are highlighted; a warning never to
trust any one technology completely and firm encouragement to
always relate information on the displays with what is visible to
the eye.
