User's Manual

NACOS Platinum
ED 3100 G 140 / 04 (2011-11)
Operating Instructions
C-1 Voyage Planning
C VOYAGE PLANNING & MONITORING.fm
C-26
1.1.7.1 Geometrical Check
This check takes place already during route editing and it is independent of the used electronic chart or
the availability of user made chart objects. It only verifies if the geometric construction of the straight
track lines and the track curves calculated from the different planned radius values are fitting together.
Possible construction errors are:
- A radius is too short, i.e. shorter than the lower limit value that was set for it at service level.
If no radius was input at the first waypoint, the program uses a default value
1)
as the input value
for all radii, which must be changed to the required value by the operator.
- A radius is too long, i.e. longer than the upper limit value that was set for it at service level.
- A radius is too long, so that the distance to the next waypoint is too small that the curve planned
in this way does not fit and can probably not be executed with this radius at this waypoint.
- There is a parameter point situated in the curve area of the track. To make certain that the changes
made by means of the parameter point are indeed effective in the desired track section, parameter
points should generally be located outside the curve area.
Fig. C / 9 Radius at waypoint 5 does not fit
1)
For the time being the default radius is the average between min and max radius, which have been set on service
level.