ISO 13739:2020

INTERNATIONAL ISO
STANDARD 13739
Second edition
2020-02
Petroleum products — Procedures for
the transfer of bunkers to vessels
Produits pétroliers — Procédures de transfert des soutes dans les
navires
Reference number
ISO 13739:2020(E)
©
ISO 2020

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ISO 13739:2020(E)

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© ISO 2020
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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ISO 13739:2020(E)

Contents Page
Foreword .v
Introduction .vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Responsibilities . 3
5 Documentation . 4
6 Bunker specifications . 5
7 Pre-delivery . 5
7.1 Safety, health and environment . 5
7.2 Pre-delivery documentation . 5
7.3 Bunkering pre-delivery safety checklist . 6
7.4 Bunker requisition . 6
7.5 Non-cargo tanks inspection for bunker tanker delivery . 6
7.6 Cargo tank measurement/calculation . 6
8 During delivery . 7
8.1 General . 7
8.2 Bunker tanker delivery requirements . 8
9 Sampling . 8
9.1 General . 8
9.2 Sampling procedure and equipment . 9
10 Quantity measurements . 9
11 Post-delivery .10
11.1 Post-delivery documentation .10
11.2 Cargo tanks measurement/calculation form .10
11.3 Non-cargo tanks inspection form for bunker tanker delivery .10
11.4 Sample labels .10
11.5 Bunker delivery note .11
11.6 Delivery time log form .11
12 Other requirements .12
12.1 Stock movement logbook .12
12.2 Plan of bunker tanker and diagram .13
12.3 Blending of products .13
12.4 Letter of protest .13
Annex A (normative) Health, safety and the environment .14
Annex B (informative) Examples of hand signals for bunkering protocol .17
Annex C (informative) Example of a bunker tanker pre-delivery safety checklist .18
Annex D (informative) Example of a shore pipeline pre-delivery safety checklist .20
Annex E (informative) Example of a road tanker pre-delivery safety checklist .22
Annex F (informative) Example of a bunker requisition form .24
Annex G (informative) Example of a non-cargo tanks inspection form for bunker tanker
delivery .26
Annex H (informative) Example of a cargo tanks measurement/calculation form for bunker
tanker delivery .28
Annex I (informative) Example of a sample label.30
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Annex J (normative) Manual tank gauging procedure for bunker tanker delivery .31
Annex K (normative) Sampling equipment .33
Annex L (normative) Sampling procedure .34
Annex M (informative) Diagrams of manual valve-setting continuous-drip sampler equipment .36
Annex N (informative) Example of a design of the sample bottle neck and cap .39
Annex O (informative) Example of a stock movement logbook for a bunker tanker .40
Annex P (informative) Example of a letter of protest .42
Annex Q (informative) Example of a delivery time log .43
Bibliography .44
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ISO 13739:2020(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 28, Petroleum and related products, fuels
and lubricants from natural or synthetic sources, Subcommittee SC 2, Measurement of petroleum and
related products.
This second edition cancels and replaces the first edition (ISO 13739:2010), which has been technically
revised. The main changes compared with the previous edition are as follows:
— definitions of the verbal forms “shall”, “should”, “may” and “can” have been included in the
Introduction;
— definitions of “list”, “list correction”, “supplier’s representative”, “trim” and “trim correction” have
been added in Clause 3;
— the following terms have been replaced throughout the document:
— “SHE” has been replaced by “HSE”;
— “cargo officer” has been replaced by “supplier’s representative”;
— “note of protest” has been replaced by “letter of protest”;
— 7.6 and Annex Q have been revised to include delivery by shore pipeline and road tankers;
— 11.5 has been updated to include a reference to MARPOL, Annex VI, Regulations 14.1, 14.4
[31]
and 18.3 ;
— a requirement to check for any leakages for filling lines has been included in A.5.4;
— units of measurements have been included in Annex H;
— a requirement to drain bunker tanker lines and hoses before opening and closing measurements
has been included in J.3;
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— the recording of secondary measurement has been included and the requirement on gauging and
zero dip have been revised in J.4;
— a sample of a delivery time log has been included as a new Annex Q.
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.
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ISO 13739:2020(E)

Introduction
This document was developed for the benefit of the marine industry, including ship owners, operators,
charterers, bunker suppliers, bunker tanker operators and surveyors. It sets out a series of procedures
to promote the uniform and expeditious transfer of bunkers to vessels meeting the latest health, safety
and environmental (HSE) standards.
Local and international regulations, such as the International Maritime Organization (IMO) regulation
International Convention for the Prevention of Pollution from Ships, 1973, as modified by the Protocol of
[31]
1978 relating thereto (MARPOL), Annex VI: Prevention of Air Pollution from Ships , apply to all parties
involved in the transfer of bunkers.
In this document, the following verbal forms are used:
— “shall” indicates a requirement;
— “should” indicates a recommendation;
— “may” indicates a permission;
— “can” indicates a possibility or capability.
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INTERNATIONAL STANDARD ISO 13739:2020(E)
Petroleum products — Procedures for the transfer of
bunkers to vessels
WARNING — The use of this document can involve hazardous materials, operations and
equipment. This document does not purport to address all the safety problems associated with
its use. It is the responsibility of the user of this document to establish appropriate safety and
health practices and to determine the applicability of regulatory limitations prior to use.
1 Scope
This document specifies procedures and requirements for the transfer of bunkers to vessels involving
bunker tankers, road tankers and shore pipelines. It is applicable to pre-delivery, delivery and post-
delivery checks and documentation.
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 4268, Petroleum and liquid petroleum products — Temperature measurements — Manual methods
ISO 8217, Petroleum products — Fuels (class F) — Specifications of marine fuels
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
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/
3.1
bunker
marine fuels comprising distillate fuels and/or residual fuels for a vessel’s (3.23) consumption
3.2
bunker agreement
contractual terms applying to a bunker (3.1) transfer
3.3
bunker delivery note
BDN
official document from the supplier (3.19) providing information on the quantity of the bunker(s) (3.1)
delivered to the vessel (3.23) and limited information on the quality
3.4
bunker surveyor
person engaged to survey the bunker (3.1) operation
3.5
bunker tanker
bunker barge or tanker used for the supply of bunkers (3.1) to the vessel (3.23)
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3.6
bunker tanker operator
company that operates the bunker tanker (3.5)
3.7
cargo tank
tank containing bunkers (3.1)
3.8
chief engineer
person authorized to receive bunkers (3.1) and sign the associated documentation
3.9
list
inclination of a vessel (3.23) expressed in degrees port or starboard away from the vertical
3.10
list correction
correction to the observed tank measurement or observed quantity when a vessel (3.23) is listing (3.9),
which can be applied provided that liquid is in contact with all bulkheads in the tank
Note 1 to entry: Correction for list may be made by reference to the vessel’s list correction tables for each tank or
by mathematical calculations.
3.11
nominated tank
tank from which bunkers (3.1) are delivered
3.12
non-cargo tank
tank not containing bunkers (3.1)
3.13
non-nominated tank
tank not nominated for current delivery
3.14
reference height
vertical distance that is noted on the tank capacity table, between the reference gauge point on the
gauge hatch and the datum strike point on the tank floor or the gauge datum plate
3.15
road tanker
truck used for the supply of bunkers (3.1) to the vessel (3.23)
3.16
sample
bunker (3.1) specimen defined by time, location and method of sampling
3.17
sample seal
tamper-evident device that uniquely identifies the origin of the sample (3.16) and prevents the
unauthorized loosening or removal of the sample container closure
3.18
shore pipeline
shore connection point for the supply of bunkers (3.1) to a vessel (3.23)
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3.19
supplier
company whose name appears on the bunker delivery note (3.3)
Note 1 to entry: It is possible that the supplier is not the actual seller of the bunkers (3.1).
3.20
supplier’s representative
individual who is appointed by the supplier (3.19) to be responsible for the delivery of bunkers (3.1) to
the vessel (3.23) and for the completion of the documentation
3.21
trim
difference between the fore and aft draught of the vessel (3.23)
Note 1 to entry: When the aft draught is greater than the forward draught, the vessel is said to be trimmed by the
stern. When the aft draught is less than the forward draught, the vessel is said to be trimmed by the head.
3.22
trim correction
correction applied to the observed gauge or observed quantity when a vessel (3.23) is not on an even
keel, provided that the liquid is in contact with all bulkheads in the tank
Note 1 to entry: Correction for the trim (3.21) may be made by referencing trim tables for each tank or by
mathematical calculation.
3.23
vessel
ship receiving bunkers (3.1)
4 Responsibilities
4.1 The supplier’s representative shall:
a) provide an appropriate bunkering pre-delivery safety checklist depending on the mode of delivery
(see Annexes C, D or E);
b) prepare the bunker requisition form (see Annex F) and confirm with the chief engineer the actual
vessel requirements as stated on the requisition form;
c) prepare the non-cargo tank inspection form (see Annex G), as applicable;
d) prepare the cargo tanks measurement/calculation form (see Annex H), as applicable;
e) take samples in accordance with Annex L and prepare the sample labels (see Annex I);
f) prepare the BDN;
g) verify, sign and stamp the documents mentioned in a) to f).
4.2 The chief engineer shall:
a) prepare the vessel to receive bunkers;
b) confirm that the actual precautions and actions, as stated in the bunkering pre-delivery safety
checklist (see Annexes C, D and E), have been taken by the vessel;
c) inspect and verify the non-cargo tank inspection form (see Annex G), as applicable;
d) inspect the measuring and sampling equipment for good service condition;
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ISO 13739:2020(E)

e) witness the opening and closing of tank gauges or flow meter readings and confirm the cargo tanks
measurement/calculation form (see Annex H);
f) check the sample labels (see Annex I) upon completion of sampling (see Annex L);
g) check the BDN;
h) verify, sign and stamp the documents mentioned in b), c), e), f) and g).
4.3 The bunker surveyor(s), when engaged, shall:
a) identify themselves to the chief engineer and the master/supplier’s representative;
b) conform to this document and, where applicable, any additional procedures set out by the
authorities;
c) notify the supplier’s representative and the chief engineer of any nonconformity to this document
for immediate corrective action. Any nonconformity or irregularity found shall be reported to his/
her principal in writing.
4.4 The master of the bunker tanker shall allow the bunker surveyor to board the bunker tanker.
4.5 The supplier’s representative, the chief engineer and the bunker surveyor (when engaged) shall
work closely together to ensure the procedures are conformed to and carried out safely and diligently at
all times during the bunkering operation.
4.6 Bunker suppliers, bunker tanker operators, supplier’s representatives, chief engineers, bunker
surveyors and any other parties that have an interest in the bunker transaction shall not engage in any
unethical practices. Any inducement to participate in such activities should be immediately reported to
the appropriate authority and/or party.
5 Documentation
5.1 Documents supporting a transfer of bunkers to vessels involving bunker tankers, road tankers and
shore pipelines will vary according to the requirements of local authorities, the law, suppliers and the
vessel. Therefore, it is not practical to recommend standardized forms. However, for the accountability of
duties, the minimum documentation for a bunker delivery includes the following:
a) for the bunker tanker delivery:
1) safety checklist (see Annex C);
2) bunker requisition form (see Annex F);
3) non-cargo tank inspection form (see Annex G);
4) cargo tanks measurement/calculation form (see Annex H);
5) BDN (see 11.5);
6) delivery time log form (see 11.6 and Annex Q);
7) sample labels (see Annex I);
b) for the road tanker and/or shore pipeline delivery:
1) safety checklist (see Annex D and/or Annex E);
2) bunker requisition form (see Annex F);
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3) bunker quantity measurement record;
4) BDN (see 11.5);
5) delivery time log form (see 11.6 and Annex Q);
6) sample labels (see Annex I).
5.2 Bunker suppliers shall have all these documents available. The documents shall bear the bunker
supplier’s name and, if applicable, a valid bunkering licence or registration number. Bunker suppliers
shall issue documents for a bunker delivery that are consistent with this document and applicable
international conventions. Bunker suppliers may have their own formats for these documents.
5.3 The completion of proper documentation is the joint responsibility of the supplier’s representative,
the chief engineer and the bunker surveyor (when engaged).
6 Bunker specifications
Unless otherwise agreed in the bunker agreement, the bunkers supplied shall be in accordance with
ISO 8217.
7 Pre-delivery
7.1 Safety, health and environment
7.1.1 For the safe transfer of bunkers, the health, safety and environment (HSE) requirements given
in Annex A shall be observed by all personnel involved in the delivery. Internationally accepted safety
standards should also be observed.
7.1.2 The person in charge of the respective area(s) of bunker delivery operation shall remain at all
times responsible for the safety of his/her crew, cargo and facilities, and should not allow safety to be
prejudiced by the actions of others.
7.1.3 Methods for effective communication, emergency shutdown requirements given in A.3.5 and
A.3.6, as well as hand signals shall be prearranged by the supplier’s representative, the chief engineer
and the bunker surveyor (when engaged) (see Annex B). A copy of the hand signal diagram shall be
given to the chief engineer and the bunker surveyor (when engaged) prior to the commencement of the
bunkering operation.
7.2 Pre-delivery documentation
The following pre-delivery documents, where applicable, shall be signed and stamped by the supplier’s
representative and the chief engineer when completed, except when otherwise stated by local
regulations. These pre-delivery documents include:
a) bunkering pre-delivery safety checklist;
b) bunker requisition form;
c) non-cargo tanks inspection form for bunker tanker delivery;
d) cargo tanks measurement/calculation form.
These pre-delivery documents are intended to:
— record an agreement on operational details of the transfer;
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— ensure the safe transfer of the product.
7.3 Bunkering pre-delivery safety checklist
7.3.1 A pre-delivery conference shall be conducted between the supplier’s representative, the chief
engineer and the bunker surveyor (when engaged). Such a conference shall include HSE checks, a review
of the pre-delivery safety checklist and the establishment of communication links. A bunker pre-delivery
safety checklist (see Annexes C, D and E) shall be completed, signed and stamped by the supplier’s
representative and chief engineer, with their names clearly printed.
7.3.2 Any amendment to this checklist shall be signed by the supplier’s representative and the chief
engineer.
7.3.3 The original of the completed checklist shall be retained by the supplier’s representative and the
duplicate shall be given to the chief engineer.
7.4 Bunker requisition
7.4.1 The supplier’s representative shall inform the chief engineer of:
a) nominated quantity and grade(s) to be supplied;
b) delivery sequence and pumping rate;
c) sampling equipment to be used (see Annex K);
d) witnessing of the measurement procedure and sampling procedure (see Annex L);
e) line clearing requirements.
7.4.2 The requirements listed in 7.4.1 are given in the bunker requisition form (see Annex F). Any
amendment to this form shall be signed by the supplier’s representative and the chief engineer.
7.4.3 The original of the completed form(s) shall be retained by the supplier’s representative and the
duplicate(s) shall be given to the chief engineer.
7.5 Non-cargo tanks inspection for bunker tanker delivery
7.5.1 The supplier’s representative and the chief engineer shall witness the measurement of non-cargo
tanks and shall inspect the void spaces (see Annex G). If the chief engineer does not attend the inspection,
the supplier’s representative shall record this on the form. This shall be endorsed by the chief engineer.
7.5.2 Any amendment to this form shall be signed by the supplier’s representative and the chief
engineer.
7.5.3 The original of the completed form(s) shall be retained by the supplier’s representative and the
duplicate(s) shall be given to the chief engineer.
7.6 Cargo tank measurement/calculation
7.6.1 For bunker tanker delivery, the tank measurement/calculation form is used to record tank
gauging and/or meter readings, cargo temperature readings and quantity calculations. This form should
contain the information given in Annex H and shall be used by the supplier’s representative to record
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the calculation of the quantity in the tanks. The relevant API/ASTM/IP/ISO methods for gauging and
measurement of petroleum and petroleum products should be used (see the Bibliography).
The supplier’s representative shall invite the chief engineer to witness the opening gauge (or me
...