ISO 13728:2012
(Main)Ships and marine technology — Ship's mooring and towing fittings — Panama chocks
Ships and marine technology — Ship's mooring and towing fittings — Panama chocks
This International Standard specifies the design, size and technical requirements for Panama chocks suitable for installation on ships passing through the Panama Canal which are normally assisted by locomotives using steel towing wires. These chocks meet normal mooring requirements and Panama Canal requirements.
Navires et technologie maritime — Corps-morts et ferrures de remorquage de navires — Écubiers de Panama
General Information
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Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 13728
First edition
2012-07-01
Ships and marine technology — Ship’s
mooring and towing fittings — Panama
chocks
Navires et technologie maritime — Corps-morts et ferrures de
remorquage de navires — Écubiers de Panama
Reference number
ISO 13728:2012(E)
©
ISO 2012
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ISO 13728:2012(E)
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© ISO 2012
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ii © ISO 2012 – All rights reserved
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ISO 13728:2012(E)
Contents Page
Foreword .iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Classification . 1
4.1 Type . 1
4.2 Nominal sizes . 1
5 Dimensions . 1
6 Materials . 2
7 Construction . 2
8 Manufacturing and inspection . 2
9 Marking . 2
Annex A (informative) Basis for strength assessment of Panama chocks . 7
Bibliography .10
© ISO 2012 – All rights reserved iii
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ISO 13728:2012(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 13728 was prepared by Technical Committee ISO/TC 8, Ships and marine technology, Subcommittee
SC 4, Outfitting and deck machinery.
iv © ISO 2012 – All rights reserved
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ISO 13728:2012(E)
Introduction
The Panama chock is a type of ship’s mooring and towing fitting installed on the shipside to lead the mooring
or towing rope from the ship’s inboard to outboard.
The Panama chocks are normally adopted for ships passing through the Panama Canal which are normally
assisted by locomotives using steel towing wire.
© ISO 2012 – All rights reserved v
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INTERNATIONAL STANDARD ISO 13728:2012(E)
Ships and marine technology — Ship’s mooring and towing
fittings — Panama chocks
1 Scope
This International Standard specifies the design, size and technical requirements for Panama chocks suitable
for installation on ships passing through the Panama Canal which are normally assisted by locomotives using
steel towing wires. These chocks meet normal mooring requirements and Panama Canal requirements.
2 Normative references
The following referenced documents are indispensable for the application 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.
IMO Circular MSC/Circ.1175, Guidance on shipboard towing and mooring equipment
Panama Canal Requirements — OP Notice to shipping N-1-2010 — Vessel requirements
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
safe working load
SWL
maximum load in kN on the rope that should normally be applied in service conditions
4 Classification
4.1 Type
The Panama chock shall be classified by its installation site as follows:
— Type A – Deck-mounted Panama chock;
— Type B – Bulwark-mounted Panama chock.
4.2 Nominal sizes
The nominal sizes of Panama chocks are denoted by reference to the width of the opening, in millimetres.
The nominal sizes are 310 and 360.
5 Dimensions
5.1 Panama chocks have dimensions and particulars in accordance with Tables 1 and 2, and Figures 1 and 2.
5.2 The minimum opening size of Panama chocks is decided as specified in Panama Canal Requirements —
OP Notice to shipping N-1-2010 — Vessel requirements.
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ISO 13728:2012(E)
6 Materials
The following material shall be used for manufacturing the Panama chocks:
2
— Chock: steel casting material having a yield point of not less than 235 N/mm or equivalent.
T
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