ISO 18296:2014

Ships and marine technology - Ship-shifting winches

ISO 18296:2014 specifies requirements for the design, operation, safety, performance, and inspection rules of ship-shifting winches, with electric or hydraulic drive. Such winches are applicable to longitudinal and transverse movements or positioning of engineering vessels for offshore operation. It can be used as a reference for inland operation.

Navires et technologie maritime — Treuils de déplacement des navires

General Information

• Status: Published
• Publication Date: 20-Oct-2014
• ICS: 47.020.50 - Deck equipment and installations
• Technical Committee: ISO/TC 8/SC 4 - Outfitting and deck machinery
• Drafting Committee: ISO/TC 8/SC 4 - Outfitting and deck machinery
• Current Stage: 9093 - International Standard confirmed
• Start Date: 23-Aug-2025
• Completion Date: 13-Dec-2025

Overview

ISO 18296:2014 - Ships and marine technology - Ship-shifting winches - specifies design, operation, safety, performance and inspection rules for ship‑shifting winches with electric or hydraulic drive. It targets winches used for longitudinal and transverse movement or precise positioning of engineering and offshore vessels, and may be used as a reference for inland operation. The standard covers mechanical design, control and protection systems, testing and product designation.

Key topics and technical requirements

• Design & strength
  • Allowable calculated stresses for drive parts (limits given for normal and extreme loading conditions).
  • Material and structural requirements for drive parts and drums.
• Steel wire ropes & drum geometry
  • Recommended rope constructions (e.g., 6×36WS‑IWRC or 6×41WS‑IWRC, tensile grades cited) and drum sizing rules:
    • Minimum drum diameter: ≥ 16 × rope diameter
    • Drum running length: ≥ 10 turns per layer
    • Flange projection rules for with/without rope guide
• Drive types & controls
  • Requirements for electric and hydraulic drives (electrical per IEC 60092; hydraulic per ISO 4413).
  • Speed control must be adjustable from stop to maximum and adjustable while working.
• Brakes & safety
  • Normally closed drum brake; power‑operated brakes must allow manual override.
  • Holding load requirements: electric winches - 1.5× drum load; hydraulic - 1.25× drum load (subject to purchaser agreement).
  • Over‑torque/impact protection (overcurrent for motors, overpressure for hydraulics).
  • Minimum ingress protection for weather‑deck electrical equipment: IP56 (IEC 60529).
• Performance & testing
  • Preferred drum load series and nominal hauling speeds listed (e.g., 50–800 kN; speeds 0.1–0.5 m/s).
  • Acceptance testing includes type tests and individual tests; inspection and marking rules (breaking strength range of rope visible on winch).
• Operation & human factors
  • Remote operation requirements, emergency stops, and clear directional markings for controls.

Applications and users

ISO 18296 is intended for:

• Shipbuilders and naval architects specifying deck machinery
• Offshore vessel operators and marine engineers for positioning and station‑keeping tasks
• Winch manufacturers and equipment purchasers preparing technical specifications
• Classification societies and surveyors for acceptance and inspection
• Maintenance teams using inspection and testing rules

Keywords: ISO 18296, ship‑shifting winches, ship shifting winch, deck machinery, offshore vessel positioning, hydraulic drive winch, electric winch, winch safety.

Related standards

• ISO 2408 (steel wire ropes)
• ISO 4413 (hydraulic systems)
• ISO 7825 (deck machinery general requirements)
• ISO 6482 (warping end profiles)
• IEC 60092 (ship electrical installations)
• IEC 60529 (IP code)

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 18296
First edition
2014-10-15
Ships and marine technology — Ship-
shifting winches
Navires et technologie maritime — Treuils de déplacement des
navires
Reference number
©
ISO 2014
© ISO 2014
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested 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
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Web www.iso.org
Published in Switzerland
ii © ISO 2014 – All rights reserved

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
3.1 Technical terms. 1
3.2 Types of ship-shifting winches . 2
4 Design and operation . 2
4.1 General requirements . 2
4.2 Strength requirements . 2
4.3 Steel wire ropes . 3
4.4 Drum design . 3
4.5 Auxiliary equipment . 3
4.6 Brakes . 3
4.7 Safety and protection . 4
4.8 Speed control . 4
4.9 Operating devices . 4
4.10 Drive equipment . 5
5 Performance specifications . 5
5.1 Preferred numbers of drum load . 5
5.2 Preferred numbers of nominal hauling speed . 5
5.3 Preferred numbers of drum capacity . 5
5.4 Light line speed. 5
5.5 Holding load . 5
5.6 Breaking strength of ropes . 5
5.7 Control requirements for automatic tension . 6
6 Acceptance tests . 6
6.1 General . 6
6.2 Type test . 6
6.3 Individual test . 7
7 Designation system . 8
7.1 Designation of product models . 8
7.2 Nameplate . 8
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 WTO principles in the Technical Barriers
to Trade (TBT) see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 8, Ships and marine technology, Subcommittee
SC 4, Outfitting and deck machinery.
iv © ISO 2014 – All rights reserved

INTERNATIONAL STANDARD ISO 18296:2014(E)
Ships and marine technology — Ship-shifting winches
1 Scope
This International Standard specifies requirements for the design, operation, safety, performance, and
inspection rules of ship-shifting winches, with electric or hydraulic drive.
Such winches are applicable to longitudinal and transverse movements or positioning of engineering
vessels for offshore operation. It can be used as a reference for inland operation.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 2408, Steel wire ropes for general purposes — Minimum requirements
ISO 3828, Shipbuilding and marine structures — Deck machinery — Vocabulary and symbols
ISO 4413, Hydraulic fluid power — General rules and safety requirements for systems and their components
ISO 6482, Shipbuilding — Deck machinery — Warping end profiles
ISO 7825, Shipbuilding — Deck machinery — General requirements
IEC 60092 (all parts), Electrical installations in ships — Special features — High Voltage Shore Connection
Systems (HVSC-Systems)
IEC 60529, Degrees of protection provided by enclosures (IP Code)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1 Technical terms
3.1.1
light load pull
pull of steel wire ropes not less than 25 % that of the drum load with a rope wound on the drum in a
single layer
3.1.2
light line speed
minimum hauling speed measured when the ship-shifting winch is under the light load pull with a rope
wound on the drum in a single layer
3.1.3
normally closed brake
brake that is always in the braking condition except for the operation conditions of hoisting and
rendering a rope
3.2 Types of ship-shifting winches
3.2.1
left-hand ship-shifting winch
winch where the reduction gear or the drive of the drum is on the left-hand side of the drum, in relation
to an observer situated on the side of the motor, power supply, or controller
Note 1 to entry: See Figure 1.
3.2.2
right-hand ship-shifting winch
winch where the reduction gear or the drive of the drum is on the right-hand side of the drum, in relation
to an observer situated on the side of the motor, power supply, or controller
Note 1 to entry: See Figure 2.
Figure 1 — Left-hand ship-shifting winch
Figure 2 — Right-hand ship-shifting winch
4 Design and operation
4.1 General requirements
Ship-shifting winches shall meet the general requirements for deck equipment in ISO 7825.
NOTE Attention is drawn to the existence of safety regulations in certain countries and organizations
affecting ship-shifting winch controls.
4.2 Strength requirements
4.2.1 The allowable calculated stresses of any drive part under the drum load, based on simple elastic
theory, shall not be greater than 0,4 times the upper yield strength ( R )
...