ISO 24136:2021

Ships and marine technology - Pilot ladder winch reels

This document specifies requirements and characteristics of ships’ pilot ladder winch reels provided with hydraulic, pneumatic, electric, or manual drive. It is applicable to the design and test of pilot ladder winch reels. It does not include requirements for the prime mover used to operate the pilot ladder winch reels. Pilot ladder winch reels specified in this document are intended to be only used with pilot ladders conforming to ISO 799-1. They are not intended to be used for ‘man lifting’ activities.

Navires et technologie maritime — Enrouleurs de winch pour échelles de pilote

General Information

• Status: Published
• Publication Date: 05-Sep-2021
• ICS: 47.020.50 - Deck equipment and installations
• Technical Committee: ISO/TC 8/SC 1 - Maritime safety
• Drafting Committee: ISO/TC 8/SC 1/WG 2 - Miscellaneous Safety Equipment
• Current Stage: 6060 - International Standard published
• Start Date: 06-Sep-2021
• Due Date: 07-May-2023
• Completion Date: 06-Sep-2021

Overview

ISO 24136:2021 - Ships and marine technology - Pilot ladder winch reels defines design, performance and test requirements for pilot ladder winch reels driven by hydraulic, pneumatic, electric or manual means. The standard applies to the design and acceptance testing of winch reels used exclusively with pilot ladders conforming to ISO 799-1 and explicitly excludes requirements for the prime mover and any use for “man lifting” activities. It supports safe pilot transfer arrangements in line with IMO guidance (A.1045).

Key topics and technical requirements

• Scope and applicability
  • Intended only for pilot ladders meeting ISO 799-1; not for man-lifting.
  • Covers right‑hand and left‑hand winch reel arrangements and fixed or track‑mounted reels.
• Design essentials
  • Drum must accommodate the entire pilot ladder and avoid damaging spreader steps; minimum drum length 2.0 m.
  • Drum structure connected to the pilot ladder; anti-rotation locking devices and mechanical locking pins for drum only.
  • Materials must be free from asbestos; bearings and sliding parts must be adequately lubricated.
• Performance
  • Performance to meet mechanical securing requirements of IMO A.1045 (27).
  • Example performance data in the standard: nominal drum load 1.5 kN, holding load 3 kN, static test load 4.5 kN (other data accepted by agreement).
  • Powered reels: innermost layer speed recommended ≤ 0.16 m/s.
  • Drive must tolerate 1.5× drum load overload for 2 min without failure.
  • Emergency stop must instantly and reliably halt the reel.
• Safety and controls
  • Power‑driven reels require safety devices to cut power and lock the reel; hydraulic/pneumatic reels need a marked neutral lock.
  • Manual emergency operation must be provided for power loss.
• Acceptance and on‑board tests
  • Individual tests: 10 min operation without load, drum load tests (including 15 min hold and 2 min overload), static load test under 1.5× holding load, checks for oil‑tightness, speed, noise and brake function.
  • On‑board tests: full ladder lowering/hoisting cycles and static 1.5× holding load application.
• Marking
  • Nameplate must include product name, manufacturer, “ISO 24136” and “SOLAS”, drive type, reel form, nominal size, drum and holding loads, motor power, year, and approval identification.

Applications and users

ISO 24136:2021 is used by:

• Shipbuilders and marine equipment manufacturers specifying or producing pilot ladder winch reels
• Shipowners, ship operators and crew responsible for pilot transfer safety
• Classification societies and maritime safety authorities for equipment approval and inspections
• Port authorities and marine pilots evaluating ship transfer arrangements

Adoption of ISO 24136 supports compliant, safe pilot transfer equipment design, acceptance testing and maintenance practices.

Related standards

• ISO 799-1 - Pilot ladders (required interface)
• IMO Assembly resolution A.1045 (27) - Pilot transfer arrangements
• ISO 3828 - Deck machinery vocabulary and symbols

Keywords: ISO 24136:2021, pilot ladder winch reels, pilot ladder, ships, marine technology, SOLAS, ISO 799-1, acceptance tests, drum load, holding load.

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 24136
First edition
2021-09
Ships and marine technology — Pilot
ladder winch reels
Navires et technologie maritime — Enrouleurs de winch pour échelles
de pilote
Reference number
©
ISO 2021
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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
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CH-1214 Vernier, Geneva
Phone: [phone]
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Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Design . 3
5 Performance . 4
6 Acceptance tests (individual) . 5
6.1 General . 5
6.2 Operation test . 5
6.3 Drum load test . 5
6.4 Static load test under 1,5 times the holding load . 6
6.5 On-board test and inspections . 6
7 Marking . 6
Bibliography . 7
Foreword
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This document was prepared by Technical Committee ISO/TC 8, Ships and marine technology,
Subcommittee SC 1, Maritime safety.
Any feedback or questions on this document should be directed to the user’s national standards body. A
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iv © ISO 2021 – All rights reserved

INTERNATIONAL STANDARD ISO 24136:2021(E)
Ships and marine technology — Pilot ladder winch reels
1 Scope
This document specifies requirements and characteristics of ships’ pilot ladder winch reels provided
with hydraulic, pneumatic, electric, or manual drive. It is applicable to the design and test of pilot ladder
winch reels. It does not include requirements for the prime mover used to operate the pilot ladder
winch reels.
Pilot ladder winch reels specified in this document are intended to be only used with pilot ladders
conforming to ISO 799-1. They are not intended to be used for ‘man lifting’ activities.
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 3828, Shipbuilding and marine structures — Deck machinery — Vocabulary and symbols
IMO Assembly resolution A.1045 (27), Pilot Transfer Arrangements
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 3828 and the following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
drum load
working load
maximum rope tension in the rope or ropes at the drum exit, when the pilot ladder winch reel is hoisting
an unloaded pilot ladder at the nominal speed, with the rope or ropes wound on the drum in a single
layer
3.2
holding load
in static mode of the pilot ladder winch reel, maximum rope tension in the rope or ropes at the drum
exit in the innermost layer with a minimum value of twice of the drum load (3.1)
3.3
left-hand pilot ladder winch reel
pilot ladder winch reel where the rope-out direction of the drum is on the left-hand side of the drum, in
relation to an observer situated on the side of reduction gearbox
Note 1 to entry: See Figure 1.
Dimensions in millimetres
Key
1 drum
2 structure connected to the pilot ladder
3 reduction gear
4 drive
5 anti-rotating locking device
a
Rope-out direction.
Figure 1 — Top view of a left-hand pilot ladder winch reel
3.4
nominal size
designation of a pilot ladder winch reel corresponding to the drum load (3.1)
Note 1 to entry: See Table 1.
3.5
right-hand pilot ladder winch reel
pilot ladder winch reel where the rope-out direction of the drum is on the right-hand side of the drum,
in relation to an observer situated on the side of the reduction gearbox
Note 1 to
...