User's Manual

ED 3100 G 140 / 04 (2011-11)
Operating Instructions
C-1 Voyage Planning
C VOYAGE PLANNING & MONITORING.fm
C-5
NACOS Platinum
1.1.1 General Information about Pre-planned Tracks
Pre-planned tracks
1)
are routes which are generated on the basis of waypoint sequences for a planned
voyage and which are stored
2)
in the form of files sorted in folders containing route catalogs.
Routes can be used by the components of the system as follows:
- Routes can be displayed in the chart area on the ECDISPILOT and in ECDIS mode on a MULTIPILOT.
In the planning mode the screen can be centered on any part of the route (Browse Mode)
- On any RADARPILOT and in RADAR mode on a MULTIPILOT, one or more routes can be selected
and overlaid to the radar picture. The presently visible part of the pre-planned track is then
displayed automatically on the PPI area.
- One of the displayed routes can be defined as the System Route, which is then effective for the
entire system. With the aid of the TRACKPILOT, the ship can be piloted automatically along the pre-
planned track contained in the route dataset. But even during manual control of course and speed,
the diverse displays at the system components that refer to the System Route can be most helpful.
- If the Planned Track Speed is input at the beginning of the voyage, the system calculates a time
schedule based on the speed settings contained in the planned route. Its purpose is to calculate the
resulting estimated time of arrival. The estimated time elapsed (ETE) will also be displayed together
with the planned speed value.
- If the planned time of arrival (ETA) is input at the beginning of the voyage, the system contin-
uously performs a speed calculation while the ship is sailing along the route; this calculation is based
on the Departure and Arrival Time set for the planned route, and its purpose is to achieve the
required time of arrival at the end of the route by an appropriate speed setting.
- In both cases, the result, the Calculated Speed, is displayed in the Route List, and can be used
by the operator as the current speed setting during manual speed control. The calculated speed
values are in any case limited to the MAX SPD values defined for each leg of the route.
- In systems with integrated CONNING display (CONNING mode or CONNINGPILOT), the special
Active System Route display can be used to monitor the time schedule along the route and for
the selected Arrival Point.
- If the system is equipped with a SPEEDPILOT, the speed can also be controlled automatically while
the ship is sailing along the System Route, in such a way that the calculated speed is achieved and
the time schedule planning is thus fulfilled.
Geographical Position and Shape of a Route
A route is divided by waypoints into segments which are commonly named legs or track segments.
The waypoints are the main construction elements of the route. Their positions are defined by geograph-
ical coordinates in the WGS84 system. See chapter C - 1.1.2 on page C-7 for details.
If it is planned that the ship will change course at a waypoint, the radius of the turn must be specified.
In this case, at the beginning of the manoeuvre computed on the basis of the specified radius, the track
curve leaves the track line
3)
at the wheel over point (WOP), and after completion of the manoeuvre
it goes over to the next track line. The track curves shown are calculated based on the manoeuvring
parameters defined for your ship on service level during the sea trials.
The geographical coordinates of the waypoints, together with the radii assigned to the waypoints, thus
define the geographical position and shape of the pre-planned track including the track curves at the
waypoints.
1)
In this document, pre-planned tracks are also simply called routes if there is no danger of confusion.
2)
Any change of the route data, made on any MFD, is saved on all MFDs automatically.
3)
Track line is a line joining two consecutive waypoints, also called leg in this operating instructions