Ships and marine technology — Pilot ladders — Part 1: Design and specification

This document specifies requirements for pilot ladders of a ship, which are provided to enable a maritime pilot to embark and disembark from a ship safely against a vertical portion of the ship's hull. It is applicable to merchant ships which embark and disembark maritime pilots with the ship underway.

Navires et technologie maritime — Échelles de pilote — Partie 1: Conception et spécification

General Information

Status
Published
Publication Date
18-Feb-2019
Current Stage
6060 - International Standard published
Start Date
19-Feb-2019
Completion Date
19-Feb-2019
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INTERNATIONAL ISO
STANDARD 799-1
First edition
2019-02
Ships and marine technology — Pilot
ladders —
Part 1:
Design and specification
Navires et technologie maritime — Échelles de pilote —
Partie 1: Conception et spécification
Reference number
ISO 799-1:2019(E)
ISO 2019
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ISO 799-1:2019(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2019

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

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below or ISO’s member body in the country of the requester.
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Published in Switzerland
ii © ISO 2019 – All rights reserved
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ISO 799-1:2019(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Materials ....................................................................................................................................................................................................................... 1

4.1 Wooden parts ........................................................................................................................................................................................... 1

4.2 Side ropes .................................................................................................................................................................................................... 1

4.2.1 General arrangement ................................................................................................................................................... 1

4.2.2 Alternative side rope arrangement .................................................................................................................. 2

4.3 Metallic materials ................................................................................................................................................................................. 2

4.4 Step fixtures ............................................................................................................................................................................................... 2

4.5 Plastic materials ..................................................................................................................................................................................... 2

4.6 Quality of materials ............................................................................................................................................................................. 2

4.7 Rope seizing ............................................................................................................................................................................................... 2

5 Construction .............................................................................................................................................................................................................. 3

6 Testing and inspection ................................................................................................................................................................................... 9

6.1 Prototype test for approval .......................................................................................................................................................... 9

6.2 Product inspection ............................................................................................................................................................................11

7 Designation .............................................................................................................................................................................................................11

8 Marking .......................................................................................................................................................................................................................12

9 Production tests and examinations ...............................................................................................................................................12

10 Maintenance ...........................................................................................................................................................................................................12

Annex A (normative) Production tests and inspections ...............................................................................................................14

© ISO 2019 – All rights reserved iii
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ISO 799-1:2019(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 of the voluntary nature of standards, 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 www .iso

.org/iso/foreword .html.

This document was prepared by Technical Committee ISO/TC 8, Ships and marine technology,

Subcommittee SC 1, Lifesaving and fire protection.

This first edition of ISO 799-1 cancels and replaces ISO 799:2004, which has been technically revised.

This first edition takes into account new designs and manufacturing methods for pilot ladders, which

have entered the market since 2004.
A list of all parts in the ISO 799 series can be found on the ISO website.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/members .html.
iv © ISO 2019 – All rights reserved
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ISO 799-1:2019(E)
Introduction

This document is intended to supplement existing IMO requirements for pilot ladders. Since IMO

instruments do not include specific requirements for prototype testing of pilot ladders for approval,

the tests included in this document are in excess of the existing IMO requirements. The reservation and

inclusion of these tests was considered necessary in order to provide a means of ensuring conformance

of pilot ladders with the performance requirements prescribed in IMO instruments and in this

document.

This document can be used for independent acceptance of a pilot ladder complying with SOLAS, in

which case certification must be issued from a signatory state of SOLAS.

NOTE ISO 799 is incorporated by reference and footnoted in the International Convention on Safety of Life at

Sea (SOLAS) Chapter V Regulation 23.2.3.
© ISO 2019 – All rights reserved v
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INTERNATIONAL STANDARD ISO 799-1:2019(E)
Ships and marine technology — Pilot ladders —
Part 1:
Design and specification
1 Scope

This document specifies requirements for pilot ladders of a ship, which are provided to enable a

maritime pilot to embark and disembark from a ship safely against a vertical portion of the ship’s hull. It

is applicable to merchant ships which embark and disembark maritime pilots with the ship underway.

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 209:2007, Aluminium and aluminium alloys — Chemical composition

ISO 877-2:2009, Plastics — Methods of exposure to solar radiation — Part 2: Direct weathering and

exposure behind window glass
ISO 1181:2004, Fibre ropes — Manila and sisal — 3-, 4- and 8-strand ropes

ISO 1461, Hot dip galvanized coatings on fabricated iron and steel articles — Specifications and test methods

ISO 15510:2014, Stainless steels — Chemical composition
3 Terms and definitions
No terms and definitions are listed in this document.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https: //www .iso .org/obp
— IEC Electropedia: available at http: //www .electropedia .org/
4 Materials
4.1 Wooden parts

Each wooden part shall be made of hardwood (ash, oak, beech, teak, and other hardwood having

equivalent properties) free from knots. Wood shall not be treated or coated with paint, varnish or other

coatings, which either change the friction coefficient or hide the natural grain.

4.2 Side ropes
4.2.1 General arrangement

Each side rope shall be mildew-resistant manila rope meeting ISO 1181:2004, Quality 1, or a spun

thermoset polyester rope with a polypropylene core of a colour that contrasts with the spun polyester.

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ISO 799-1:2019(E)

Each side rope shall have a breaking strength of at least 24 kN, and the specification of the diameter of

side ropes should be 20 mm (63 mm circumference).
4.2.2 Alternative side rope arrangement
Alternative side ropes of synthetic material may be used if they:
a) meet the breaking strength and size requirements of 4.2.1;

b) are at least as resistant to elongation under load as the standard ropes described in 4.2.1;

c) have an exterior surface suitable to be grasped by bare hands, similar to manila or spun polyester;

d) are of a thermoset polymer, resistant to deterioration from ultraviolet light; and

e) provide a visual indication of excessive wear, similar to the spun polyester/polypropylene

construction described in 4.2.1.
4.3 Metallic materials

4.3.1 Each metal fastener shall be made of material which is inherently corrosion-resistant, or treated

to be corrosion-resistant.

4.3.2 Each ferrous metal part, which is not stainless steel, shall be coated in accordance with ISO 1461.

4.3.3 Each stainless steel part shall be of a marine grade alloy with a corrosion resistance at least equal

to grade “4401-316-00I” in ISO 15510:2014.

4.3.4 Each aluminium part shall be 5 254 alloy, or other grade containing not more than 0,06 % copper,

in accordance with ISO 209:2007.

4.3.5 Metals in contact with each other shall be galvanically compatible, or insulated to prevent

galvanic corrosion in a marine environment.
4.4 Step fixtures

Step fixtures for securing each step of a ladder shall have rope seizing or purpose made arrangement

such as solid nylon clamp blocks or hardwood clamp blocks to prevent the fasteners from loosening.

Cable ties, u-clamps, worm driven clips are unacceptable.
4.5 Plastic materials

Each plastic material shall be of a type that retains at least 30 % of its original tensile strength and

at least 80 % of its original impact strength when subjected to the one-year outdoor weathering test

described in Method A of ISO 877-2:2009.
4.6 Quality of materials

Each part of a ladder shall be free of splinters, burrs, sharp edges, corners, projections, or other defects

that could injure a person using the ladder.
4.7 Rope seizing

Seizing, shall consist of three-ply tarred marline of minimum breaking strength 800 N, and with a

minimum diameter of 4 mm, or other suitable material of equivalent strength and diameter. All seizings

shall be figure-of-eight racking seizings, minimum length of seizing 32 mm.
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ISO 799-1:2019(E)
5 Construction
5.1 Figure 1A provides construction details for pilot ladders.
Dimensions in millimetres
Key
1 securing rope alternative 5 side rope
arrangements
2 shackle 6 step fixture
3 splice and rope seizing 7 rope seizing
4 step 8 spreader step
Figure 1A — Construction details of pilot ladder
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ISO 799-1:2019(E)

5.2 Each step in the ladder shall be supported by side ropes. Each side of the ladder shall consist of a

continuous loop of rope with the joint above the top step or below the bottom step.

5.3 Each of the side ropes shall:

a) be wholly continuous rope without any knots, joints or splices except as specified in 5.4.

b) not be painted or otherwise coated or covered.

5.4 Unless a special arrangement is needed to secure the ladder to an accommodation ladder, pilot

ladder winch reel, or other custom installation, the ends of the side ropes shall be finished as follows.

a) If the ends of the side ropes terminate just above the top step (highest step), they shall round a

thimble and the end shall be joined with a short splice.

b) The side ropes shall not have fittings or form loops at the bottom of the ladder that can be used to

attach additional ladder sections or tripping lines.

c) If the ends of the side ropes on each side terminate just beneath the lowest step, the rope ends shall

be securely fastened or otherwise treated to prevent fraying. The rope ends shall pass through the

holes in the lowest step and use similar step fixtures as the other steps. A rope seizing, as per the

other steps, shall be made immediately under step fixtures. A second rope seizing shall be provided

60 mm under the first seizing, see Figure 1B. The loose ends of the rope shall be whipped as close

as possible to the second rope seizing to protect against fraying. An accepted method is a 25 mm

whipping. The loose ends of the rope shall be as short as possible, but not less than 50 mm below

the second seizing and under no circumstances can loops be allowed.

d) The ends of each side rope, which do not terminate in a splice or fitting, shall be served, whipped or

otherwise treated to prevent fraying.
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ISO 799-1:2019(E)
Dimensions in millimetres
Key
1 securing rope alternative 7 step fixture
arrangements
2 shackle L length of securing rope
3 splice and rope seizing L length of ladder
4 rope seizing W width of the step
5 step n number of steps in the ladder
6 side rope

Figure 1B — Ladder construction using rope seizing and step fixtures and alternative securing

rope arrangements at top of ladder

5.5 Each side rope shall pass through a separate hole in each step. The centre of each hole shall be at

least 50 mm from the short edge of the step as shown in Figure 2. Alternative arrangements using slots

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ISO 799-1:2019(E)

are shown in Figure 2 and are permitted only for replacement steps and the slots shall be in the longer

edge of the replacement step.
Dimensions in millimetres
Key
1 grooved, patterned or textured non-skid surface area

Figure 2 — Alternative hole and slot types for side ropes of typical ladder step and

replacement step

5.6 Each pair of side ropes shall be secured together, both above and below each step, with specially

...

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