ISO 20283-5:2016

INTERNATIONAL ISO
STANDARD 20283-5
First edition
2016-12-15
Mechanical vibration — Measurement
of vibration on ships —
Part 5:
Guidelines for measurement,
evaluation and reporting of vibration
with regard to habitability on
passenger and merchant ships
Vibrations mécaniques — Mesurage des vibrations à bord des
navires —
Partie 5: Lignes directrices pour le mesurage, l’évaluation et
l’établissement de rapports des vibrations affectant l’habitabilité à
bord des navires de commerce et des paquebots
Reference number
©
ISO 2016
© ISO 2016, Published in Switzerland
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ii © ISO 2016 – All rights reserved

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Instrumentation . 3
4.1 General requirements . 3
4.2 Functional test . 3
5 Measurement locations and directions . 3
5.1 Measurement locations . 3
5.2 Measurement position and orientation . 4
6 Measurement conditions . 4
7 Measurement procedure . 5
8 Evaluation . 5
8.1 Guideline values of acceptable vibration. 5
8.2 Excessive vibration values . 6
8.3 Beating . 6
9 Test report . 7
Annex A (informative) Frequency weighting, W . 8
m
Annex B (informative) Example of report for evaluation of habitability on-board ships in
accordance with this document .10
Bibliography .11
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.iso.org/iso/foreword.html.
The committee responsible for this document is ISO/TC 108, Mechanical vibration, shock and condition
monitoring, Subcommittee SC 2, Measurement and evaluation of mechanical vibration and shock as applied
to machines, vehicles and structures.
This first edition of ISO 20283-5 cancels and replaces ISO 6954:2000, which has been technically
revised with the following changes:
— crew and passenger spaces were clearly defined;
— measurement conditions also include dynamic positioning (DP) mode;
— guideline values were changed from pairs of lower and upper values representing the range of
commonly accepted vibration magnitude to just one maximum value. This gives a clearer indication
when this document is referred to in commercial contracts or similar. The actual guideline values
are somewhat severer accounting for the technical progress made.
A list of parts in the ISO 20283 series can be found on the ISO website.
iv © ISO 2016 – All rights reserved

Introduction
Shipboard vibration that interferes with duties or reduces comfort is objectionable and often results in
adverse comments from crew and passengers. To quantify this vibration, this document gives guidelines
for the measurement, evaluation and reporting of habitability for all persons on board, especially for
the crew.
Vibration data acquired in accordance with this document are also useful for
— comparison with ship specifications,
— comparison with other ships, and
— further development and improvement of vibration regulations.
INTERNATIONAL STANDARD ISO 20283-5:2016(E)
Mechanical vibration — Measurement of vibration on
ships —
Part 5:
Guidelines for measurement, evaluation and reporting
of vibration with regard to habitability on passenger and
merchant ships
1 Scope
This document gives guidelines for the measurement, evaluation and reporting of vibration with regard
to habitability for all persons on-board passenger and merchant ships, especially for crew. Overall
frequency-weighted r.m.s. vibration values in the frequency range 1 Hz to 80 Hz are given as guideline
values for different areas on ships.
This document is applicable to passenger and merchant ships with intended voyages of 24 h or more.
This document specifies requirements for the instrumentation and the procedure of measurement in
normally occupied spaces. It also contains analysis specifications and guidelines for the evaluation of
ship vibration with respect to habitability.
The evaluation of low-frequency ship motion which can result in motion sickness is covered by
ISO 2631-1. For the evaluation of the global structural vibration of a ship, however, see ISO 20283-2.
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 2631-1, Mechanical vibration and shock — Evaluation of human exposure to whole-body vibration —
Part 1: General requirements
ISO 2631-2, Mechanical vibration and shock — Evaluation of human exposure to whole-body vibration —
Part 2: Vibration in buildings (1 Hz to 80 Hz)
ISO 8041, Human response to vibration — Measuring instrumentation
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 2041 and the following 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 http://www.iso.org/obp
3.1 General
3.1.1
crew
persons on-board a ship who are responsible to keep running all functions necessary to safely navigate
the ship
3.1.2
passenger
person on-board a ship not belonging to the crew (3.1.1)
Note 1 to entry: Passengers are also scientific personnel on research ships, temporary working crew, camera
teams and similar.
3.1.3
free route
condition achieved when the ship is proceeding at a constant speed and course with helm adjustment of
±2° or less and no throttle adjustment
3.2 Crew and passenger spaces
3.2.1
crew accommodation space
space intended for crew (3.1.1) recreational and administration use, namely cabins including day and
sleeping rooms, hospitals, mess rooms, recreation rooms
Note 1 to entry: Recreation rooms are lounges, smoke rooms, cinemas, gymnasiums, libraries, hobby rooms and
game rooms.
3.2.2
office
area or room for carrying out a ship’s business, namely deck office, ship office, meeting rooms
3.2.3
work space
area allocated for predominant manual work, namely workshops, laundries, galleys and laboratories,
but except machinery spaces (3.2.4)
3.2.4
machinery space
space which contains steam or internal-combustion machinery, pumps, air compressors, boilers, oil fuel
units, major electrical machinery, oil filling stations, thrusters, refrigerating, stabilizing, steering gear,
ventilation and air conditioning machinery, etc. and trunks to such spaces
Note 1 to entry: Machinery spaces are not meant for longer stay, hence they are not considered in this document.
3.2.5
duty station
work space (3.2.3) where crew (3.1.1) members typically stay over prolonged periods of time (typically
for a watch of 4 h) to monitor navigation or machinery
Note 1 to entry: Main duty stations are the navigation bridge and the engine control room (ECR).
3.2.6
open-deck recreation space
designated area on the open decks to be used by crew (3.1.1) and passengers (3.1.2) for the purpose of
recreation
2 © ISO 2016 – All rights reserved

3.2.7
cabin and public space
space primarily intended for passenger (3.1.2) use, namely passenger cabins, public spaces
Note 1 to entry: Public spaces are restaurants, lounges, reading and game rooms, gymnasiums, shops.
4 Instrumentation
4.1 General requirements
Measurements in accordance with this document may be carried out using different types of measuring
and recording equipment, e.g. instruments of digital, spectral or time-based type. The measuring
instrumentation shall meet the requirements of ISO 8041.
It is acceptable to use instruments manufactured in accordance with ISO 8041 that have frequency
indications above 80 Hz provided that the filter characteristics comply with ISO 2631-2 (for frequency
weighting, W , see Annex A).
m
The compliance of the instrumentation system with the specifications of ISO 8041 requires a calibration
at least every 2 years. The date of the last calibration shall be reported.
If further data analysis is required following the measurement analysis as described in this document,
the measurement data should be recorded with an electronic system which produces permanent
records.
4.2 Functional test
Each channel of the ins
...