ISO 16329:2003

INTERNATIONAL ISO
STANDARD 16329
First edition
2003-04-15
Ships and marine technology — Heading
control systems for high-speed craft
Navires et technologie maritime — Systèmes de pilotage automatique
pour les navires à grande vitesse

Reference number
©
ISO 2003
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but
shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In
the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.

©  ISO 2003
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2003 — All rights reserved

Contents Page
Foreword. iv
1 Scope. 1
2 Normative references. 1
3 Terms and definitions. 2
4 Performance. 3
4.1 General. 3
4.2 Constituents. 4
4.3 Functional requirements. 4
4.3.1 Introduction. 4
4.3.2 Change-over from automatic to manual steering and vice versa. 4
4.3.3 Operational controls including adjustment controls .5
4.3.4 Rudder angle limitation . 6
4.3.5 Permitted yaw. 6
4.3.6 Heading indication accuracy . 6
4.3.7 Preset heading. 6
4.3.8 Performing turns. 6
4.3.9 Limiting of overshoot . 6
4.3.10 Power supply. 7
4.3.11 Alarms and signalling facilities . 7
4.3.12 Transformation error. 8
4.3.13 Heading stability. 8
4.3.14 Disturbance to the magnetic compass . 8
4.3.15 Interfaces. 8
4.4 Safety precautions. 8
5 Type testing. 8
5.1 Testing and required results. 8
5.2 Magnetic-compass safe-distance test . 8
5.3 EMC and environmental test. 9
5.4 Change-over from automatic to manual steering mode . 9
5.5 Control characteristics. 9
5.5.1 General. 9
5.5.2 Heading-signal transformation accuracy . 9
5.5.3 200° turn. 9
5.5.4 Heading stability. 10
5.5.5 Overshoot. 10
6 Fall-back arrangements. 10
7 Marking and identification. 10
8 Information. 11
Annex A (normative) Heading stability test under the conditions of disturbance . 12
Annex B (normative) Craft-motion simulator . 13
Annex C (informative) Example of heading stability test under the conditions of disturbance . 15
Annex D (informative) Equivalent requirements in ISO 16329 and IMO Resolutions. 17
Bibliography . 20

Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 16329 was prepared by Technical Committee ISO/TC 8, Ships and marine technology, Subcommittee
SC 6, Navigation.
iv © ISO 2003 — All rights reserved

INTERNATIONAL STANDARD ISO 16329:2003(E)

Ships and marine technology — Heading control systems for
high-speed craft
1 Scope
This International Standard specifies the structure, performance, inspection and testing of heading control
systems to be installed on board craft operating under the following conditions:
a) speed exceeding 30 kn and up to 70 kn;
b) maximum rate of turn 20°/s;
c) normal range of operation between 70°N and 70°S should, as required by chapter 13 of the HSC Code,
comply with the minimum performance requirements specified in these standards.
This International Standard applies to the heading control systems which enable a craft to keep a preset
heading with minimum operation of the craft's steering gear, within limits related to the craft's manoeuvrability
in conjunction with their sources of heading information.
This International Standard assumes the use of a conventional arrangement. Where other arrangements are
provided, the requirements of this standard should apply insofar as they are applicable, and appropriate
justification provided where deviation from the requirements is necessary.
The heading control systems should, within a speed range of up to 30 knots, comply with resolution A.342(IX),
and within a speed range of 30 knots to 70 knots should comply with the requirements of this resolution.
NOTE 1 All requirements that are extracted from the recommendations of IMO Resolutions [Resolution A.822(19) on
performance standards for automatic steering aids for high-speed craft, A.694(17) and A.342(IX)] are printed in italics.
NOTE 2 The heading control system was previously called “automatic steering aids (automatic pilot)”.
NOTE 3 Resolution A.342(IX) represents Resolution A.342(IX) as amended by MSC.64(67), Annex 3.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 694, Ships and marine technology — Positioning of magnetic compasses in ships
ISO 16328, Ships and marine technology — Gyro-compasses for high-speed craft
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
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 Resolution A.822(19), Performance standards for automatic steering aids (automatic pilots) for high-
speed craft
IMO Resolution MSC.64(67), Annex 3:1997, Amendment to resolution A.342(IX), Performance standards for
heading control systems
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
heading
horizontal direction in which a craft actually points or heads at any instant, expressed in degrees from a
reference direction, usually from 000° at the reference direction clockwise through 360°, where 360° becomes
identical with 000°
3.2
preset heading
horizontal direction in which a craft is steered or intended to be steered, expressed as the angular direction
with respect to north (true/magnetic), from 000° clockwise through 360°, where 360° becomes identical with
000°
3.3
manual steering
method of controlling the steering gear manually
EXAMPLE Using a steering wheel.
3.4
automatic steering
method of controlling the steering gear automatically to enable a craft to keep, or change to, a preset heading
by processing the heading information obtained from a heading source, such as a gyro-compass or
transmitting magnetic compass, etc.
3.5
change-over device
device for changing-over from automatic to manual steering and vice versa
3.6
automatic-steering device
device which controls automatic steering
3.7
proportional rudder adjustment
adjustment of a component of the total rudder command in proportion to an instantaneous value of the
difference between the preset heading and actual heading
3.8
derivative rudder adjustment
counter rudder adjustment
adjustment of a component of the total rudder command which acts to control the rate of turn of the craft
2 © ISO 2003 — All rights reserved

3.9
integral rudder adjustment
adjustment of a component of the total rudder command which is in proportion to the integral value of the
heading deviation
3.10
weather adjustment
adjustment which minimizes unnecessary steering motion against yawing caused by waves, swells and wind
3.11
adjustment control
device which changes the characteristics o
...