ISO 13643-4:2017

INTERNATIONAL ISO
STANDARD 13643-4
Second edition
2017-02
Ships and marine technology —
Manoeuvring of ships —
Part 4:
Stopping, acceleration, traversing
Navires et technologie maritime — Manoeuvres des navires —
Partie 4: Arrêt, accélération, déplacement
Reference number
ISO 13643-4:2017(E)
©
ISO 2017

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ISO 13643-4:2017(E)

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ISO 13643-4:2017(E)

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 . 3
6 Test 4.1 — Stopping test . 4
6.1 General . 4
6.2 Description . 4
6.3 Analysis and presentation of results of a stopping test . 5
6.4 Designation of a stopping test . 6
7 Test 4.2 — Coasting stop test (inertia test) . 6
7.1 General . 6
7.2 Description . 6
7.3 Analysis and presentation of results of a coasting stop test . 7
7.4 Designation of a coasting stop test . 8
8 Test 4.3 — Acceleration test . 8
8.1 General . 8
8.2 Description . 8
8.3 Analysis and presentation of results of an acceleration test . 8
8.4 Designation of an acceleration test . 9
9 Test 4.4 — Traversing test . 9
9.1 General . 9
9.2 Description . 9
9.3 Analysis and presentation of results of a traversing test . 9
9.4 Designation of a traversing test .10
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ISO 13643-4:2017(E)

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 13643-4:2013), of which it constitutes a
minor revision with the following changes:
— the numbering has changed;
— in Clause 4, Table 1, in the second line of the table (CC-Code DECFAC), the Definition was changed;
— in Clause 4, Table 1, in line 9 of the table (CC-Code TIACC), the SI-Unit was changed from “m” to “s”.
A list of all parts in the ISO 13643 series can be found on the ISO website.
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INTERNATIONAL STANDARD ISO 13643-4:2017(E)
Ships and marine technology — Manoeuvring of ships —
Part 4:
Stopping, acceleration, traversing
1 Scope
This document defines symbols and terms and provides guidelines for the conduct of tests to give
evidence about the stopping, acceleration, and traversing of surface ships, submarines, and models. It is
intended 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, 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
IMO MSC Circular 1053, Explanatory Notes to the Standard for Ship Manoeuvrability
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
acceleration test
manoeuvring test to determine the ship’s performance under positive acceleration or negative
acceleration (deceleration)
3.2
coasting stop test
manoeuvring test to determine the ship’s behaviour after the propulsion plant has been disengaged
and/or shut down
3.3
manoeuvring device
rudder, azimuthing thruster, hydroplane, cycloidal propeller, or equivalent system used to manoeuvre
a vessel
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ISO 13643-4:2017(E)

3.4
stopping test
manoeuvring test to determine the ship’s behaviour after active reversal of the thrust direction of the
propulsion plant
3.5
traversing test
manoeuvring test to determine the ship’s capability to execute a lateral movement, if possible without
turning and moving in the longitudinal direction
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
Concept
CC-
Symbol SI-Unit
Code
Term Definition or explanation
Distance travelled from t = 0 up to the time the ship
s SPF m Track reach is “practically dead in the water” measured along the
F
ship’s track
s
Track reach
F
a
DECFAC s Average time to decelerate by one knot
deceleration factor
V
0
If the propulsion is shut down, distance travelled along
Track reach to
s SPS m the ship’s track before the propulsion has come to a
S
propulsor stop
complete stop
Distance travelled along the ship’s track before the
s SPACC m Acceleration distance
a
target speed is achieved
Track reach after (t) (t) stands for elapsed time after t = 0, example: track
s SP(t) m
(t)min
minutes reach after 3 minutes: s or SP3
3min
For stopping test:
Stopping time From t = 0 to the time when the ship is “dead in the
water”
t TIF s
F
For coasting stop test:
Coasting time From t = 0 to the time when the ship is “practically
dead in the water” (V ≤ 2 kn)
Time to propulsor If the propulsion is shut down, the time until the pro-
t TIS s
S
stop pulsion has come to a complete stop
t TIU s Reversal time Until full astern power is achieved
U
Time elapsed to achieve the target speed (within a
t TIACC s Acceleration time
a
margin of 1 kn)
Speed down to which the ship still follows the manoeu-
–1 b
V VL m s Steerage way
L
vring devices
–1 b
V VI m s Target speed Speed to which the ship is accelerated or decelerated
i
–1 b
V VX0 m s Advance speed Component in x -direction, relative to the initial head-
x0 0
ing of the ship
a
The unit m/kn may be used.
b
The unit kn, common in navigation, may be used.
c
For angles, the unit ° (degree), may be used.
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ISO 13643-4:2017(E)

Table 1 (continued)
Concept
CC-
Symbol SI-Unit
Code
Term Definition or explanation
–1 b
V VY0 m s Traversing speed Component in y -direction, relative to the initial head-
y0 0
ing of the ship
–1 b
V V0 m s Initial speed (See ISO 13643-1)
0
Coordinate in the direction of initial heading in the
earth-fixed axis system moving with the water, the or-
x X0 m —
0
igin of which coincides with that of the ship-fixed axis
system at t = 0 (see also ISO 13643-1)
x X0F m Advance at end of x -component of ship’s track at t
0F 0 F
test (run)
y Y0 m Transverse axis Coordinate in the water surface perpendicular to x ,
0 0
analogous definition (see also ISO 13643-1)
y Y0F m Transfer at end of y -component of the ship
...