IEC 62065:2002 pdf download

IEC 62065:2002 pdf download.Maritime navigation and radiocommunication equipment and systems – Track control systems – perational and performance requirements,methods of testing and required test results.
(A2/5.1.2) The system shall allow the officer of the watch (user) to start or restart track control only if
— the pre-planned track has been checked for plausibility and correctness of geometric and ship dependent limits before becoming the active track
and if
— the ship’s position relative to the selected track,
— the difference between track course and actual heading,
— the ship’s manoeuvrability,
will result in a safe approach manoeuvre to the track. A safe approach manoeuvre is a planned manoeuvre which is within the manoeuvring characteristics of the vessel and which does not result in an unexpected turning direction.
For this purpose, the system shall allow the user at least one of the following options:
a) to select the TO-waypoint or a leg on a pre-planned track and to select the maximum allowable difference between the bearing to the TO-waypoint and the actual heading; or
b) to define a temporary track to go to the pre-planned track. The temporary track shall meet all ship manoeuvring characteristics which apply to a pre-planned track (—A)
4.1.1.3 Primary position-fixing system
(A2/5.1.3) The primary position-fixing system used for track control shall be an electronic
position-fixing system (EPFS) approved by the International Maritime Organization.
4.1.1.4 Position monitoring
(A2/5.1.4) The ship’s position shall be continuously monitored by a second or additional independent position source. If the ship is fitted with a second EPFS and position is available from this EPFS its position shall be used for position monitoring. Otherwise, estimated position by dead reckoning (DR) as a minimum shall be used as the second position source for position monitoring. The DR position shall be derived from a shipborne heading sensor and a speed and distance measuring equipment (SDME). Means shall be provided to adapt the acceptable deviation to the required steering accuracy. This monitoring need not be an integral part of the track control system.
4.1.1.5 Early course change indication
A graphical description of the sequences described here is given in annex A.
(A2/5.1.5) In the case of track control by a sequence of waypoints, a confirmable ‘early course change indication’ shall be given up to 5 mm, and no later than I mm, before the wheel-over line.
The system shall provide means for the officer of the watch (user) to confirm the ‘early course change indication’ before wheel-over.
4.1.1.6 Actual course change and confirmation (—A)
A graphical description of the sequences described here is given in annex A.
a) (A2/5.1.6.1) In the case of track control by a sequence of waypoints and if the ‘early course change indication’ was confirmed a confirmable course change indication shall be given at between 30 s to 1 mm 4, at the earliest, before the wheel-over line.
If the ‘early course change indication’ has not been confirmed, a confirmable course change alarm shall be given between 1 mm and no later than 30 s before the wheel- over line.
b) (A2/5.1.6.2) The system shall provide means for the officer of the watch (user) to confirm or acknowledge the course change indication or course change alarm at or before wheel- over.
c) (A2/5.1.6.3) With or without the confirmation, the ship shall follow automatically the track.
d) (A215.1.6.1) If the course change indication has not been confirmed by or at wheel-over line then a course change alarm shall be given instead.
e) (A215.1.6.4) If the actual course change indication or the actual course change alarm is not confirmed by the officer of the watch (user) within 30 s before or after the wheel-over line, a back-up navigator alarm shall be given.
4.1.1.7 Change of waypoints
(A215.1 .7) In the case of track control by a pre-planned sequence of waypoints, it shall not be possible to modify the TO-waypoint, the FROM-waypoint and (—A) the NEXT-waypoint of the active track and their relevant associated waypoint data while in the track control mode without creating a new track and until:
a) the pre-planning of the new track is completed; and
b) the starting requirements (4.1.1.2) are fulfilled.
4.1.1.8 Turn performance (—A)
(A215.1 .8) The track control shall enable the ship to sail from one leg to another by turns based:
a) on a preset turn radius; or
b) on a radius calculated on the base of a preset rate of turn and the planned speed; and within the turning capability of the ship.
4.1.1.9 Adaptation to steering characteristics.