SIST EN 62065:2014

SLOVENSKI STANDARD
01-julij-2014
1DGRPHãþD
SIST EN 62065:2004
Pomorska plovba ter radiokomunikacijski sistemi in oprema - Sistemi za nadzor
spremljanja - Obratovalne in zmogljivostne zahteve, preskusne metode in
zahtevani rezultati preskušanja (IEC 62065:2014)
Maritime navigation and radiocommunication equipment and systems - Track control
systems - Operational and performance requirements, methods of testing and required
test results
Ta slovenski standard je istoveten z: EN 62065:2014
ICS:
47.020.70 Navigacijska in krmilna Navigation and control
oprema equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 62065
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2014
ICS 47.020.70 Supersedes EN 62065:2002
English Version
Maritime navigation and radiocommunication equipment and
systems - Track control systems - Operational and performance
requirements, methods of testing and required test results
(IEC 62065:2014)
Matériels et systèmes de navigation et de Navigations- und Funkkommunikationsgeräte und -systeme
radiocommunication maritimes - Systèmes de contrôle de für die Seeschifffahrt - Bahnregelungssysteme - Betriebs-
route - Exigences opérationnelles et de fonctionnement, und Leistungsanforderungen, Prüfverfahren und geforderte
méthodes d'essais et résultats exigés Prüfergebnisse
(CEI 62065:2014) (IEC 62065:2014)
This European Standard was approved by CENELEC on 2014-03-13. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2014 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 62065:2014 E
Foreword
The text of document 80/716/FDIS, future edition 2 of IEC 62065, prepared by IEC/TC 80 "Maritime
navigation and radiocommunication equipment and systems" was submitted to the IEC-CENELEC
parallel vote and approved by CENELEC as EN 62065:2014.

The following dates are fixed:
(dop) 2014-12-13
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2017-03-13
standards conflicting with the
document have to be withdrawn
This document supersedes EN 62065:2002.

– alarms and warnings have been brought into line with the requirements for Bridge Alert
Management;
– requirements for the category B system have been revised;
– the parameters of the ship models of Annex I have been adjusted to resemble more Newtonian-like
behaviour and the tidal current has been modelled;
– a new Annex K has been added with interface requirements.

Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard IEC 62065:2014 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:

IEC 61108-4 NOTE Harmonized as EN 61108-4.
IEC 61162-3 NOTE Harmonized as EN 61162-3.
ISO 9000 NOTE Harmonized as EN ISO 9000.
ISO 11674 NOTE Harmonized as EN ISO 11674.

- 3 - EN 62065:2014
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.

NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year

IEC 60945 - Maritime navigation EN 60945 -
and radiocommunication equipment and
systems - General requirements - Methods
of testing and required test results

IEC 61162 Series Maritime navigation EN 61162 Series
and radiocommunication equipment and
systems - Digital interfaces
IEC 61162-1 - Maritime navigation EN 61162-1 -
and radiocommunication equipment and
systems - Digital interfaces -
Part 1: Single talker and multiple listeners

IEC 61162-2 - Maritime navigation EN 61162-2 -
and radiocommunication equipment and
systems - Digital interfaces -
Part 2: Single talker and multiple listeners,
high-speed transmission
IEC 61924-2 - Maritime navigation EN 61924-2 -
and radiocommunication equipment and
systems - Integrated navigation systems -
Part 2: Modular structure for INS -
Operational and performance requirements,
methods of testing and required test results

IEC 62288 - Maritime navigation EN 62288 -
and radiocommunication equipment and
systems - Presentation of navigation-related
information on shipborne navigational
displays - General requirements, methods of
testing and required test results

IEC 62616 - Maritime navigation EN 62616 -
and radiocommunication equipment and
systems - Bridge navigational watch alarm
system (BNWAS)
IMO MSC.74(69) - Annex 2, Recommendation on Performance - -
Standards for Track Control Systems

IMO Resolution - General requirements for shipborne radio - -
A.694 (17) equipment forming part of the Global
Maritime Distress and Safety System
(GMDSS) and for electronic navigational
aids
IMO MSC.302(87) - Performance standards for Bridge Alert - -
Management (BAM)
IEC 62065 ®
Edition 2.0 2014-02
INTERNATIONAL
STANDARD
colour
inside
Maritime navigation and radiocommunication equipment and systems – Track

control systems – Operational and performance requirements, methods of

testing and required test results

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XD
ICS 47.020.70 ISBN 978-2-8322-1381-0

– 2 – 62065 © IEC:2014(E)
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references . 7
3 Terms, definitions and abbreviations . 8
3.1 Terms and definitions . 8
3.2 Abbreviations . 12
4 Application of this standard . 12
5 Requirements . 14
5.1 Operational requirements . 14
5.1.1 Functionality . 14
5.1.2 Accuracy and performance constraint documentation . 17
5.1.3 Alerts . 18
5.2 Ergonomic criteria . 20
5.2.1 Operational controls . 20
5.2.2 Presentation of information . 21
5.3 Design and installation . 21
5.4 Interfacing . 22
5.4.1 Sensors . 22
5.4.2 Status information . 22
5.4.3 Standards . 22
5.5 Fall-back arrangements . 22
5.5.1 Failure of track control . 22
5.5.2 Failure of position sensor . 23
5.5.3 Failure of the heading measuring system . 23
5.5.4 Failure of the speed sensor . 24
6 Test requirements and results . 25
6.1 General . 25
6.2 General requirements . 25
6.2.1 Environmental tests . 25
6.2.2 Documentation . 26
6.2.3 Declarations . 27
6.3 Environment setup . 27
6.3.1 General . 27
6.3.2 Ship motion simulator . 29
6.3.3 Test scenarios . 30
6.3.4 Planning . 30
6.4 Test execution . 31
6.4.1 General . 31
6.4.2 Check the track . 31
6.4.3 Execution of the scenarios . 33
6.4.4 Execution of additional tests . 39
6.4.5 Monitoring and alerts . 41
6.4.6 Fallback and manual change over . 47
6.4.7 Display of information . 50
6.4.8 Operational controls . 50
Annex A (normative) Graphical description of sequences . 51

62065 © IEC:2014(E) – 3 –
Annex B (informative) Speed control . 53
Annex C (informative)  Track control systems with dual controllers . 55
Annex D (informative)  Management of static and dynamic data. 56
Annex E (informative)  Limits . 58
Annex F (informative) Data flow diagram . 59
Annex G (normative)  Scenario definitions and plots . 61
Annex H (informative)  Sensor errors and noise models . 67
Annex I (normative)  Ship model specification . 73
Annex J (informative)  Explanation of adaptation tests (6.4.4.1) . 94
Annex K (normative) IEC 61162 interfaces . 97
Bibliography . 100

Figure 1 – Functional model of track control as part of an integrated navigation system . 26
Figure 2 – Block diagram . 28
Figure 3 – High level block diagram . 29
Figure A.1 – Sequence of course change alerts (~A) . 51
Figure A.2 – Handling of the Back-up Navigator Alarm (NA) . 52
Figure G.1 – Scenario 1 plot . 62
Figure G.2 – Scenario 2 plot . 63
Figure G.3 – Scenario 3 plot . 64
Figure G.4 – Scenario 4 plot . 66
Figure H.1 – Spectral distribution of modelled GPS errors . 68
Figure H.2 – Wave sequence – sea state 5 . 70
Figure H.3 – Wave spectrum – sea state 5 . 70
Figure H.4 – Supertanker – sea state 5 . 71
Figure H.5 – Container ship – sea state 5 . 71
Figure H.6 – Fast ferry – sea state 5 . 71
Figure H.7 – Container ship – sea state 2 . 72
Figure I.1 – High level model block diagram . 74
Figure I.2 – Model block diagram . 86
Figure I.3 – Application with simple follow-up . 87
Figure I.4 – Control system using actuator outputs and feedback . 87
Figure I.5 – System with actuator mechanism, bypassing the rudder response model . 88
Figure I.6 – System with actuator mechanism using a fast rudder response time in the
model . 88
Figure I.7 – Turning circle manoeuvre – Ferry . 91
Figure I.8 – Turning circle manoeuvre – Container ship . 92
Figure I.9 – Turning circle manoeuvre – Tanker . 93
Figure J.1 – Adaptation to speed change . 94
Figure J.2 – Adaptation to changes along a leg . 95
Figure J.3 – Adaptation to current changes during turn . 95
Figure J.4 – Adaptation to sea state during turn . 96
Figure J.5 – Adaptation to sea state change on a leg . 96

– 4 – 62065 © IEC:2014(E)
Figure K.1 – Track control system logical interfaces . 97

Table 1 – Simulator input rate . 29
Table 2 – Simulator output rate . 30
Table E.1 – Limits . 58
Table G.1 – Scenario 1 . 61
Table G.2 – Scenario 2 . 62
Table G.3 – Scenario 3 . 63
Table G.4 – Scenario 4 . 65
Table H.1 – Heights and periods for half-waves . 69
Table I.1 – Relationship between thrust lever and rudder models . 76
Table I.2 – Constant parameters of the model . 83
Table I.3 – Run-time inputs . 85
Table I.4 – Model outputs . 85
Table I.5 – Parameter sets for three ships . 89
Table I.6 – Results from turning circle manoeuvres . 90
Table K.1 – IEC 61162-1 sentences transmitted by the track control system . 97
Table K.2 – IEC 61162-1 sentences received by the track control system . 98

62065 © IEC:2014(E) – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MARITIME NAVIGATION AND
RADIOCOMMUNICATION EQUIPMENT AND SYSTEMS –
TRACK CONTROL SYSTEMS –
Operational and performance requirements,
methods of testing and required test results

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
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with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
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6) All users should ensure that they have the latest edition of this publication.
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members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62065 has been prepared by IEC technical committee 80: Maritime
navigation and radiocommunication equipment and systems.
This second edition cancels and replaces the first edition published in 2002 and constitutes a
technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
– alarms and warnings have been brought into line with the requirements for Bridge Alert
Management;
– requirements for the category B system have been revised;

– 6 – 62065 © IEC:2014(E)
– the parameters of the ship models of Annex I have been adjusted to resemble more
Newtonian-like behaviour and the tidal current has been modelled;
– a new Annex K has been added with interface requirements.
The text of this standard is based on the following documents:
FDIS Report on voting
80/716/FDIS 80/729/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
All text of this standard that is identical to that in IMO resolution MSC.74(69), Annex 2, is
printed in italics and the resolution (abbreviated to – A2) and paragraph numbers are
indicated in brackets i.e. (A2/3.3).
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
62065 © IEC:2014(E) – 7 –
MARITIME NAVIGATION AND
RADIOCOMMUNICATION EQUIPMENT AND SYSTEMS –
TRACK CONTROL SYSTEMS –
Operational and performance requirements,
methods of testing and required test results

1 Scope
This International Standard specifies the minimum operational and performance requirements,
methods of testing and required test results conforming to performance standards adopted by
the IMO in resolution MSC.74(69) Annex 2 Recommendation on Performance Standards for
Track Control Systems. In addition, it takes into account IMO resolution A.694(17) to which
IEC 60945 is associated.
When a requirement of this standard is different from IEC 60945, the requirement in this
standard takes precedence. Also it takes into account IMO resolution MSC.302(87) on bridge
alert management (BAM).
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 60945, Maritime navigation and radiocommunication equipment and systems – General
requirements – Methods of testing and required test results
IEC 61162 (all parts), Maritime navigation and radiocommunication equipment and systems –
Digital interfaces
IEC 61162-1, Maritime navigation and radiocommunication equipment and systems – Digital
interfaces – Part 1: Single talker and multiple listeners
IEC 61162-2, Maritime navigation and radiocommunication equipment and systems – Digital
interfaces – Part 2: Single talker and multiple listeners, high-speed transmission
IEC 61924-2, Maritime navigation and radiocommunication equipment and systems –
Integrated navigation systems – Part 2: Modular structure for INS – Operational and
performance requirements, methods of testing and required test results
IEC 62288, Maritime navigation and radiocommunication equipment and systems –
Presentation of navigation-related information on shipborne navigational displays – General
requirements, methods of testing and required test results
IEC 62616, Maritime navigation and radiocommunication equipment and systems – Bridge
navigational watch alarm system (BNWAS)
IMO MSC.74(69) Annex 2, Recommendation on Performance Standards for Track Control
Systems
– 8 – 62065 © IEC:2014(E)
IMO resolution A.694(17), General requirements for shipborne radio equipment forming part
of the Global Maritime Distress and Safety System (GMDSS) and for electronic navigational
aids
IMO MSC.302(87), Performance standards for bridge alert management (BAM)
3 Terms, definitions and abbreviations
3.1 Terms and definitions
For the purposes of this standard, the following terms and definitions apply
3.1.1
active track
track activated for track control
3.1.2
alarm
high-priority alert
Note 1 to entry: Condition requiring immediate attention and action by the bridge team, to maintain the safe
navigation of the ship.
3.1.3
alert
announcement of abnormal situations and conditions requiring attention
Note 1 to entry: Alerts are divided in four priorities: emergency alarms, alarms, warnings and cautions.
Note 2 to entry: Alerts are additionally classified in two different categories for navigational purposes: category A
and category B as described in IMO resolution MSC.302(87).
Note 3 to entry: An alert provides information about a defined state change in connection with information about
how to announce this event in a defined way to the system and the operator.
3.1.4
along-track speed control
automatic control of the ship's speed during track control based on a pre-planned track
3.1.5
assisted turn
manoeuvre of a ship automatically controlled by a pre-set radius or rate of turn but not based
on the ship's position to perform an approximation of a curved track
3.1.6
back-up navigator
any individual, generally an officer, who has been designated by the ships master to be on
call if assistance is needed on the bridge
3.1.7
back-up navigator alarm
signal automatically sent from the TCS to call assistance to the bridge when the officer of the
watch fails to acknowledge certain alarms within a defined time period
Note 1 to entry: Note that the back-up navigator alarm does not represent an alarm as defined in 3.1.2.
3.1.8
consistent common reference system
sub-system or function of a TCS for acquisition, processing, storage, surveillance and
distribution of data and information providing identical and obligatory reference to sub-

62065 © IEC:2014(E) – 9 –
systems and subsequent functions within a TCS and to other connected equipment, if
available
3.1.9
course
for marine navigation, horizontal direction in which a vessel is steered or intended to be
steered, expressed as angular distance from north, usually 000° at north, clockwise through
360°
Note 1 to entry: 360° is indicated as 000°.
3.1.10
course difference limit
maximum difference between track course and heading before a warning is activated
3.1.11
cross-track distance
cross-track error
perpendicular distance of a predefined point on the ship from the track including direction
(negative if the ship is left of the intended track)
3.1.12
cross-track limit
maximum cross-track distance before an alarm is activated
3.1.13
curved track
non-straight track between two legs
3.1.14
fall-back arrangements
automatic reaction of the TCS by using data, function or hardware of degraded quality in
relation to the failed one
EXAMPLE Dead reckoning for position information, heading control in case of a failure of track control.
3.1.15
FROM-waypoint
last passed waypoint
3.1.16
great circle sailing
sailing on the intersection of the earth surface and a plane containing the points A, B and the
centre of the sphere
3.1.17
heading
horizontal direction in which a ship actually points or heads at any instant, expressed in
angular units from a reference direction, usually from 000° at the reference direction

clockwise through 360°
Note 1 to entry: 360° is indicated as 000°.
3.1.18
heading control
control of the ship's heading
– 10 – 62065 © IEC:2014(E)
3.1.19
heading monitor function
monitoring of the actual heading sensor by an independent second source
3.1.20
leg
straight line between two waypoints and/or curved track(s)
3.1.21
main conning position
place on the bridge with a commanding view providing the necessary information and
equipment for the conning officer to carry out his functions
3.1.22
minimum manoeuvring speed for track control
lowest fore/aft speed through the water at which the track control system is capable of
maintaining its performance within the specified accuracy limits
Note 1 to entry: The value depends on the ship's design and loading and on the present environmental
conditions.
3.1.23
NEXT-waypoint
waypoint following the TO-waypoint
3.1.24
override facility
control to perform the override function
3.1.25
override function
intentional fast change-over from automatic to temporary manual control
3.1.26
position monitor function
monitoring of the actual position sensor by an independent second source
3.1.27
primary position-fixing system
electronic position-fixing system (EPFS) used for track control and approved by the
International Maritime Organization (see 5.1.1.3)
3.1.28
radius of turn
radius of a curved track
3.1.29
rate of turn
change of heading per time unit
3.1.30
rhumb line sailing
sailing on a line on the surface of the earth making the same angle with each meridian
crossed
3.1.31
ship manoeuvring characteristics
range-of-manoeuvre possible for the ship

62065 © IEC:2014(E) – 11 –
Note 1 to entry: Examples of the range-of-manouvres are: maximum rate of turn, minimum radius of turn,
maximum turn acceleration and deceleration.
3.1.32
single operator action
procedure achieved by no more than one hard-key or soft-key action, excluding any
necessary cursor movements, or voice actuation using programmed codes
3.1.33
speed
absolute value of velocity
Note 1 to entry: May either be the ship's speed through the water, or the speed made good over the ground.
3.1.34
steering mode selector
switch provided for the selection of manual steering modes and automatic steering devices
3.1.35
surge
forward component of ship motion
3.1.36
sway
athwartships component of ship motion (positive to starboard)
3.1.37
temporary track
track that originates at the current position of the ship and joins the pre-planned track
Note 1 to entry: The temporary track may include temporary waypoints which can be identified as different from
the waypoints of the pre-planned track.
3.1.38
TO-waypoint
waypoint which the ship is approaching
3.1.39
track
path to be followed over ground
3.1.40
track control
control of the ship's movement along a track, where corrections made by the controller to
compensate for wind, drift and other influences, are based on the cross-track error and not
only on the bearing to the destination waypoint (TO-waypoint)
3.1.41
track course
direction from one waypoint to the next, a constant course on a rhumb line track and a varying
course on a Great Circle track
3.1.42
warning
alert for condition requiring immediate attention, but no immediate action by the bridge team
Note 1 to entry: Warnings are presented for precautionary reasons to make the bridge team aware of changed
conditions which are not immediately hazardous, but may become so if no action is taken.

– 12 – 62065 © IEC:2014(E)
3.1.43
waypoint
geographic position together with its associated data
3.1.44
wheel-over-line
WOL
line where the ship has to initiate a curved track to eliminate the effect of any offset with
respect to the new course, taking into consideration the distance required for the ship to build
up the necessary rate of turn
3.1.45
wheel-over-time
WOT
point in time when the track control system initiates the planned course change
3.1.46
yaw
rate of turn (positive to starboard)
3.2 Abbreviations
~A Not applicable for category A systems
ACCA Actual course change alarm
ACCW Actual course change warning
BAM Bridge alert management
CCRP Consistent common reference point
CCRS Consistent common reference system
COG Course over ground
DGPS Differential GPS
DR Dead reckoning
ECCA Early course change alarm
ECCW Early course change warning
ENC Electronic navigational chart
EPFS Electronic position fixing system
EUT Equipment under test
GC Great circle
GPS Global positioning system
INS Integrated navigation system
NA (Back up) Navigator alarm
RL Rhumb line
ROT Rate-of-turn
SDME Speed and distance measuring equipment
SWH Significant wave height
TCS Track control system
WOL Wheel-over-line
WOT Wheel-over-time
4 Application of this standard
The application of this standard is as follows.

62065 © IEC:2014(E) – 13 –
a) (A2/1) Track control systems in conjunction with their sources of position, heading and
speed information are intended to keep a ship automatically on a pre-planned track over
ground under various conditions and within the limits related to the ship's manoeuvrability.
A track control system may additionally include or be combined with
– heading control;
– along-track speed control (see Annex B).
b) Planning the track by waypoints may be performed
– as part of the track control system, or
– by importing waypoint or track data.
c) The track control system shall ensure the integrity of the geodetic datum, the ship
manoeuvring characteristics and the curved tracks of the imported data.
d) This standard applies for track control systems which can exchange data with a heading
sensor, speed sensor, EPFS and/or heading controller but excludes waypoint data
exchange.
e) If a track control system automatically receives additional data, including waypoints, from
other navigational aids, the requirements of IEC 61924-2 for this data exchange shall also
apply.
f) If a track control system is integrated into an INS, the corresponding requirements of INS
(as defined in IEC 61924-2) shall apply, for example concerning
– route planning by waypoints,
– data transfer of safety-checked waypoints and
– monitoring of navigational safety for example by charts.
g) Track control does not necessarily require that ENC or other geographic data such as
shallow area information be taken into consideration by the track control system.
h) (A2/2.1) These IMO Performance Standards are applicable for track control systems
working
– at ship's speed from minimum manoeuvring speed up to 30 kn; and
– at ship's maximum rate of turn not greater than 10°/s.
i) These performance standards do not apply to High Speed Craft as defined by SOLAS
chapter 10.
j) (A2/2.2)Track control systems fitted on ships shall meet all requirements of the IMO
Performance Standards (MSC.74(69) Annex 2 Recommendation on Performance
Standards for Track Control Systems) relating to straight tracks.
k) Systems fitted on ships requiring curved track control shall additionally meet all the
requirements relating to curved tracks (category C).
l) This standard applies to three categories of track control systems:
Category A: Single leg track control or multiple leg track control without assisted turns
between legs;
Category B: Multiple leg track control with assisted turns between legs;
Category C: Full track control on legs and turns.
Some requirements contained in this clause cannot be verified by objective measurements.
The manufacturer shall declare that compliance to these requirements is achieved and shall
provide relevant documentation. The declaration(s), documentation and, where necessary, the
equipment shall be checked. The manufacturer shall also declare the general hardware and
functional composition of the equipment and the relevant category of IEC 60945 for each unit.

– 14 – 62065 © IEC:2014(E)
5 Requirements
5.1 Operational requirements
5.1.1 Functionality
5.1.1.1 Track control steering modes
(See 6.4.3.2)
(A2/5.1.1) A track control system shall be able to steer the ship from its position
.1 to a single waypoint; or
.2 along a track containing a sequence of waypoints
using rhumb line or great circle sailing.
5.1.1.2 Starting requirements
(See 6.4.2.1, 6.4.2.2, 6.4.2.3, 6.4.2.4, 6.4.3.1)
(A2/5.1.2) The system shall allow the officer of the watch (user) to start or restart track
control only if
– the required position, heading and speed sensor data are valid and selected.
– the pre-planned track has been checked for plausibility and correctness of geometric and
ship-dependent limits (see Annex E) 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).
5.1.1.3 Primary position-fixing system
(See 6.2.2.2)
(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.
5.1.1.4 Position monitoring
(See 6.4.5.3)
(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

62065 © IEC:2014(E) – 15 –
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.
5.1.1.5 Early course change warning (~A)
(See 6.4.5.12)
A graphical description of the sequences described here is given in Annex A Figure A.1.
(A2/5.1.5) In the case of track control by a sequence of waypoints, an 'early course change
warning' shall be given up to 6 min, and no later than 3 min, before the wheel-over time.
If the early course change warning is not acknowledged within 30 s, at the latest 2 min 30 s
before the wheel-over-time, the alert priority shall change from warning to alarm.
The early course change alarm is defined to be associated with NA activation (see 5.1.3.11).
5.1.1.6 Actual course change warning
...