ISO 11674:2019
(Main)Ships and marine technology — Heading control systems
Ships and marine technology — Heading control systems
This document specifies the minimum operational, functional and performance requirements, as well as methods of testing and the corresponding required test results, for heading control systems installed on board ships conforming to performance standards adopted by IMO Resolution MSC.64(67), Annex 3. In addition, it takes into account parts of IMO resolution A.694(17) to which IEC 60945 is associated. Also it takes into account IMO resolution MSC.302(87) on bridge alert management (BAM). In this document, the ship models of simulators used for performance testing are based on those from ships with a combined system of propeller propulsion and conventional rudder, with a speed range of up to 30 knots. The test results are considered also to be valid for ships with multiple parallel operated rudders. NOTE The text in this document that is identical to that in IMO Resolution A.342(IX), as amended by IMO Resolution MSC.64(67) Annex 3, and IMO Resolution A.694(17), is printed in italics.
Navires et technologie maritime — Systèmes de contrôle du cap
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Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 11674
Third edition
2019-11
Ships and marine technology —
Heading control systems
Navires et technologie maritime — Systèmes de contrôle du cap
Reference number
©
ISO 2019
© ISO 2019
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ii © ISO 2019 – All rights reserved
Contents Page
Foreword .v
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and abbreviated terms . 2
3.1 Terms and definitions . 2
3.2 Abbreviated terms . 4
4 Requirements . 5
4.1 General . 5
4.2 Operational requirements . 7
4.2.1 Change-over from automatic to manual steering and vice versa. 7
4.2.2 Operational controls including adjustment controls. 7
4.2.3 Manual change-over from track control to heading control . 8
4.3 Functional requirements . 8
4.3.1 Rudder angle limitation . 8
4.3.2 Heading monitor . 8
4.3.3 Interfaces . 8
4.3.4 Alert management . 9
4.3.5 Mandatory displayed information .11
4.4 Control performance requirements .11
4.4.1 General.11
4.4.2 Heading keeping function under wave disturbance.12
4.4.3 Heading changing function .12
4.5 Display .14
5 Set-up .14
5.1 General .14
5.2 Ship motion simulator and starting condition .15
6 Tests of operational requirements .16
6.1 Change-over from automatic to manual steering and vice versa — Method of
testing and required test results .16
6.2 Operational controls including adjustment controls — Method of testing and
required test results .17
6.3 Manual change-over from track control to heading control .17
6.3.1 Application .17
6.3.2 Method of testing and required test results .17
6.4 Display test .18
7 Tests of functional requirements .18
7.1 Rudder angle limitation .18
7.1.1 Method of testing .18
7.1.2 Required test results .18
7.2 Heading monitor.18
7.3 Interfaces .19
7.3.1 Method of testing .19
7.3.2 Required test results .19
7.4 Alert management .19
7.4.1 Basic test for alert management .19
7.4.2 ‘Lost HDG control’ alert and escalation to BNWAS .19
7.4.3 ‘Off-heading’ alert.20
7.4.4 Alert detected by the heading monitor (‘Doubtful heading’ alert) .21
7.4.5 ‘No SPD adaptive’ alert .22
7.4.6 ‘Low speed’ alert .22
7.4.7 Failure or reduction in the power supply to the EUT or an external
heading monitor (‘HCS power fail’ alert) .23
7.4.8 System failure of EUT or an external heading monitor (‘HCS fault’ alert) .24
7.5 Mandatory displayed information — Method of testing and required test results .24
8 Tests of control performance .24
8.1 Heading keeping test under wave disturbance .24
8.1.1 Method of testing .24
8.1.2 Required test results .25
8.2 Heading changing test .25
8.2.1 Application .25
8.2.2 Small heading changing test .25
8.2.3 Heading changing test with preset turn rate .26
8.2.4 Heading changing test with preset turning radius .27
8.2.5 200° heading changing test .28
8.2.6 Heading changing test under wave disturbance .28
9 Information .29
Annex A (normative) Use of IEC 62065 ship models and wave disturbances for the HCS
performance tests .30
Annex B (normative) Alerts definition for HCS .43
Annex C (normative) IEC 61162 interfaces .44
Bibliography .47
iv © ISO 2019 – All rights reserved
Foreword
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electrotechnical standardization.
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