ISO 13643-3:2017

Ships and marine technology — Manoeuvring of ships — Part 3: Yaw stability and steering

ISO 13643-3:2017 defines symbols and terms and provides guidelines for the conduct of tests to give evidence about the yaw stability and steering of surface ships, submarines, and models. It is meant to be read in conjunction with ISO 13643‑1.

Navires et technologie maritime — Manoeuvres des navires — Partie 3: Stabilité en lacet et pilotage

General Information

• Status: Published
• Publication Date: 08-Feb-2017
• ICS: 47.020.70 - Navigation and control equipment
• Technical Committee: ISO/TC 8/SC 6 - Navigation and ship operations
• Drafting Committee: ISO/TC 8/SC 6 - Navigation and ship operations
• Current Stage: 9093 - International Standard confirmed
• Start Date: 06-Oct-2022
• Completion Date: 19-Apr-2025

Relations

• Revises: ISO 13643-3:2013 - Ships and marine technology — Manoeuvring of ships — Part 3: Yaw stability and steering
• Effective Date: 28-May-2016

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 13643-3
Second edition
2017-02
Ships and marine technology —
Manoeuvring of ships —
Part 3:
Yaw stability and steering
Navires et technologie maritime — Manoeuvres des navires —
Partie 3: Stabilité en lacet et pilotage
Reference number
©
ISO 2017
© ISO 2017, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
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ii © ISO 2017 – All rights reserved

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Test-related physical quantities . 2
5 General test conditions . 5
6 Test 3.1 — Pull-out test . 6
6.1 General . 6
6.2 Analysis and presentation of results of a pull-out test . 6
6.3 Designation of a pull-out test . 7
7 Test 3.2 — Direct spiral test (according to Dieudonné) . 7
7.1 General . 7
7.2 Description . 7
7.3 Analysis and presentation of results of a direct spiral test (according to Dieudonné) . 8
7.4 Designation of a direct spiral test (according to Dieudonné) . 9
8 Test 3.3 — Reverse spiral test (according to Bech). 9
8.1 General . 9
8.2 Description .10
8.3 Analysis and presentation of results of a reverse spiral test (according to Bech) .10
8.4 Designation of a reverse spiral test (according to Bech) .11
9 Test 3.4 — Weave test .12
9.1 General .12
9.2 Description .12
9.3 Analysis and presentation of results of a weave test .13
9.4 Designation of a weave test .13
10 Test 3.5 — Astern test .13
10.1 General .13
10.2 Description .14
10.2.1 Description of the direct astern test .14
10.2.2 Description of the astern zig-zag test .14
10.3 Analysis and presentation of results of an astern test .15
10.3.1 Analysis of a direct astern test .15
10.3.2 Analysis of an astern zig-zag test .16
10.4 Designation of an astern test .16
10.4.1 Designation of a direct astern test .16
10.4.2 Designation of an astern zig-zag test .16
11 Test 3.6 — Sine test .16
11.1 General .16
11.2 Description .17
11.3 Analysis and presentation of results of a sine test .17
11.4 Designation of a sine test .19
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.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
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. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment,
as well as information about ISO’s adherence to the World Trade Organization (WTO) principles in the
Technical Barriers to Trade (TBT) see the following URL: www . i so .org/ iso/ foreword .html.
The committee responsible for this document is ISO/TC 8, Ships and marine technology, Subcommittee
SC 6, Navigation and ship operations.
This second edition cancels and replaces the first edition (ISO 13643-3:2013), of which it constitutes a
minor revision with the following changes:
— the numbering has changed;
s-1 -1
— in Clause 4, Table 1, the SI-Unit in first line was changed from “rad ” to “rad s ”;
— in the second line of 9.4, “δ = 10° (10)” was changed to “δ = −10° (10)”.
Ri Ri
A list of all parts in the ISO 13643- series can be found on the ISO website.
iv © ISO 2017 – All rights reserved

INTERNATIONAL STANDARD ISO 13643-3:2017(E)
Ships and marine technology — Manoeuvring of ships —
Part 3:
Yaw stability and steering
1 Scope
This document defines symbols and terms and provides guidelines for the conduct of tests to give
evidence about the yaw stability and steering of surface ships, submarines, and models. It is meant to be
read in conjunction with ISO 13643-1.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 13643-1:2017, Ships and marine technology — Manoeuvring of ships — Part 1: General concepts,
quantities and test conditions
ISO 13643-5:2017, Ships and marine technology — Manoeuvring of ships — Part 5: Submarine specials
ISO 80000-1, Quantities and units — Part 1: General
ISO 80000-3, Quantities and units — Part 3: Space and time
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http:// www .electropedia .org/
— ISO Online browsing platform: available at https:// www .iso .org/ obp/
3.1
astern test
manoeuvring test to determine the ship’s ability to maintain course while making way astern
3.2
astern zig-zag test
manoeuvring test to determine the ship’s ability to maintain course while making way astern by
assessing manoeuvring devices efficiency from a zig-zag test
3.3
direct astern test
manoeuvring test to determine the ship’s ability to maintain course when making way astern using its
manoeuvring devices and tunnel thrusters as available
3.4
direct spiral test (according to Dieudonné)
manoeuvring test to determine the yaw stability and turning ability when using constant manoeuvring
device settings
3.5
manoeuvring device
rudder, azimuthing thruster, hydroplane, cycloidal propeller, or equivalent system used to manoeuvre
a vessel
3.6
pull-out test
manoeuvring test for quick determination of a ship’s yaw stability related to its speed through the water
3.7
reverse spiral test (according to Bech)
manoeuvring test to determine the yaw stability and turning ability when using constant yaw rates of
turn
3.8
sine test
manoeuvring test to determine the ship’s turning and yaw-checking ability in relation to initial speed
and manoeuvring device settings for the purpose of setting up auto pilots
3.9
weave test
manoeuvring test to determine the extent of a ship’s potential yaw instability
4 Test-related physical quantities
Test-related physical quantities are listed in Table 1. The more general quantities and concepts
concerning the manoeuvring of ships are set out in ISO 13643-1.
For quantities and their units, ISO 80000-1 and ISO 80000-3 shall be used.
Table 1 — Test-related physical quantities
Symbol CC- SI-Unit Concept
Code
Term Definition or explanation

dψ 
Gradient of the ψ (δ )
C
-1 CRi
GRDNTD s —
dδ curve at δ
Ri
-1
GRDNTB s —
 
dψ Gradient of the ψ (δ )
i iR
curve at δ
dδ
R
L L m Length Reference length o
...