Ingangsdatum: 23-11-1995
Geldig tot en met: 31-12-1999
10.1 It should be possible to carry out route planning
and route monitoring in a simple and reliable manner.
10.2 ECDIS should be designed following ergonomic principles
for user-friendly operation.
10.3 The
largest scale data available in the SENC for the area given should always be used by
the ECDIS for all alarms or indications of crossing the ship's safety contour and of
entering a prohibited area, and for alarms and indications according to Appendix 5.
10.4 Route Planning10.4.1 It should be possible to carry out route planning
including both straight and curved segments.
10.4.2 It
should be possible to adjust a planned route by, for example:
.1 adding waypoints to a route;
.2 deleting waypoints
from a route;
.3 changing the position of a waypoint;
.4 changing the order of the waypoints in the route.
10.4.3 It should be possible to plan an alternative route in
addition to the selected route. The selected route should be clearly distinguishable
from the other routes.
10.4.4 An indication is required if
the mariner plans a route across an own ship's safety contour.
10.4.5 An indication is required if the mariner plans a route across the
boundary of a prohibited area or of a geographical area for which special conditions
exist (see Appendix 4).
10.4.6 It should be possible for the
mariner to specify a limit of deviation from the planned route at which activation of
an automatic offtrack alarm should occur.
10.5
Route Monitoring10.5.1 For route monitoring the selected route and own
ship's position should appear whenever the display covers that area.
10.5.2 It should be possible to display a sea area that does not have the
ship on the display (e.g., for look ahead, route planning), while route monitoring. If
this is done on the display used for route monitoring, the automatic route monitoring
functions (e.g., updating ship's position, and providing alarms and indications)
should be continuous. It should be possible to return to the route monitoring display
covering own ship's position immediately by single operator action.
10.5.3 ECDIS should give an alarm if the ship, within a specified time set
by the mariner, is going to cross the safety contour.
10.5.4
ECDIS should give an alarm or indication, as selected by the mariner, if the ship
within a specified time set by the mariner, is going to cross the boundary of a
prohibited area or of a geographical area for which special conditions exist (see
Appendix 4).
10.5.5 An alarm should be given when the
specified limit for deviation from the planned route is exceeded.
10.5.6 The ship's position should be derived from a continuous positioning
system of an accuracy consistent with the requirements of safe navigation. Whenever
possible, a second independent positioning method of a different type should be
provided; ECDIS should be capable of identifying discrepancies between the two
systems.
10.5.7 ECDIS should provide an
indication when the input from the position fixing system is lost. ECDIS should also
repeat, but only as an indication, any alarm or indication passed to it from a
position-fixing system.
10.5.8 An alarm should be given by
ECDIS if the ship, within a specified time or distance set by the mariner, is going to
reach a critical point on the planned route.
10.5.9 The
positioning system and the SENC should be on the same geodetic datum. ECDIS should
give an alarm if this is not the case.
10.5.10 It should be
possible to display an alternative route in addition to the selected route. The
selected route should be clearly distinguishable from the other routes. During the
voyage, it should be possible for the mariner to modify the selected sailing route or
change to an alternative route.
10.5.11 It should be
possible to display:
.1 time-labels along ship's track,
manually on demand and automatically at intervals selected between 1 and 120 m; and
.2 an adequate number of: points, free movable electronic
bearing lines, variable and fixed-range markers and other symbols required for
navigation purposes and specified in Appendix 3.
10.5.12 It
should be possible to enter the geographical co-ordinates of any position and then
display that position on demand. It should also be possible to select any point
(features, symbol or position) on the display and to read its geographical
co-ordinates on demand.
10.5.13 It should be possible to
adjust the ship's geographical position manually. This manual adjustment should be
noted alpha-numerically on the screen, maintained until altered by the mariner, and
automatically recorded.
10.6 Voyage
recording10.6.1 ECDIS should store and be able to reproduce certain
minimum elements required to reconstruct the navigation and verify the official
database used during the previous 12 hours. The following data should be recorded at
one-minute intervals:
.1 to ensure a record of own ship's
past track: time, position, heading, and speed; and
.2 to
ensure a record of official data used: ENC source, edition, date, cell and update
history.
10.6.2 In addition, ECDIS should record the
complete track for the entire voyage, with time marks at intervals not exceeding 4
hours.
10.6.3 It should not be possible to manipulate or
change the recorded information.
10.6.4 ECDIS should have
the capability to preserve the record of the previous 12 hours and of the voyage
track.