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Cargo Surveying • Marine Fuel • Bunker Survey
Bunker Surveying Course & Complete Marine Fuel Survey Guide
Develop professional knowledge of bunker quantity verification, marine fuel measurement, survey documentation, mass flow metering awareness, quantity discrepancies and technical reporting through flexible online training.
Online Only
52 Hours Listed Study Time
Advanced Diploma Pathway
English
Course at a Glance
Expert in Bunker Surveying Online Training
IMT's current Expert in Bunker Surveying course combines core cargo-surveying subjects with a specialist bunker-surveying module.
Listed Study Time
52 hours
Current course-page duration.
Current Structure
2 sections • 4 lessons • 1 quiz
Three compulsory subjects plus bunker surveying.
Learning Level
Advanced Diploma Cargo Surveying
Specialist bunker-surveying pathway.
Standards update required before publication: the current IMT course description still refers to SS 600:2014 and TR 48:2015. In Singapore, SS 600:2014 was superseded by SS 600:2022 from 1 January 2023, and the current mass-flow-metering standard is SS 648:2024, mandatory for custody-transfer bunker deliveries to ocean-going ships in Singapore from 1 April 2025. The course material should be reviewed and updated accordingly.
Bunker Surveying Fundamentals
What Is a Bunker Survey?
A bunker survey is an independent verification activity associated with the quantity, documentation and transfer records of marine fuel supplied to or remaining onboard a vessel.
Bunker fuel represents a significant operating cost for many vessels. Because the buyer and seller are often not physically present during delivery, independent survey evidence can help establish what was measured, documented and observed during the transfer.
A bunker surveyor may review relevant vessel and bunker-delivery information, verify measurement records, examine documentation and provide an independent survey report. The exact method used to establish delivered quantity depends on the applicable port requirements, contractual arrangements and measurement system.
Modern bunkering can use approved mass flow meters for custody transfer, while tank-gauging methods remain relevant in some contexts and as contingency arrangements where permitted. A professional surveyor therefore needs to understand both traditional quantity-survey concepts and the controls surrounding modern mass flow metering.
Survey Purpose
Why Is Bunker Surveying Important?
Bunker surveying helps create an independent record of the fuel-delivery process and can support commercial confidence when quantities are disputed.
Quantity Verification
Provide independent verification of the measurement information used to establish bunker quantity.
Document Review
Check that relevant delivery and survey records are complete, consistent and properly documented.
Independent Evidence
Create a professional record that can support the parties when questions arise after the delivery.
Dispute Support
Help establish the measurement and documentation facts relevant to a bunker quantity discrepancy.
Commercial Control
Support shipowners, charterers, suppliers and buyers in protecting high-value fuel transactions.
Process Assurance
Observe whether the applicable measurement and documentation process is being followed.
Survey Reporting
Translate observations, records and calculations into a structured technical survey report.
Professional Independence
Maintain objective reporting and distinguish verified evidence from claims or assumptions.
Measurement Methods
Tank Gauging vs Mass Flow Metering
Bunker quantity can be established using different measurement approaches depending on local regulations and the delivery system.
- Tank gauging: quantity is derived from verified tank measurements, calibration information, temperature and related calculation data
- Mass flow metering: an approved metering system measures fuel mass during transfer
- Measurement controls need to protect the integrity of the complete delivery system
- Survey documentation should identify the method and evidence used
- Measurement-system requirements differ between ports and jurisdictions
- Local standards and current authority requirements should always be checked
- A bunker surveyor should understand the limitations and verification points of the method being used
Mass Flow Metering
What Is a Bunker Mass Flow Meter?
A bunker mass flow meter is a measurement system used to determine the mass of marine fuel transferred during a bunker delivery.
Mass flow metering reduces reliance on manual tank-volume calculations for custody transfer and can improve the efficiency, traceability and consistency of quantity measurement when the complete system is properly approved, maintained and operated.
Singapore's Maritime and Port Authority requires approved MFM systems for marine fuel oil bunker deliveries and states that the delivered quantity shown on the Bunker Delivery Note is based on the bunker tanker's MFM system, witnessed by relevant operational parties and the bunker surveyor if one is engaged.
For surveyors, the important professional principle is system integrity. Training should explain the evidence and controls that support reliable measurement without treating the survey as a mechanical reading of a single number.
Professional Survey Workflow
What Does a Bunker Surveyor Review?
The exact scope varies by assignment and port requirements, but a professional bunker survey typically considers several categories of evidence.
Assignment & Instructions
Understand the survey scope, parties involved, vessel details and required reporting format.
Delivery Documentation
Review relevant bunker-delivery documents and verify that important information is consistent.
Measurement Records
Review the measurement information used to establish the quantity transferred.
Vessel / Barge Information
Confirm relevant particulars and records needed to understand the delivery and measurement context.
Timing & Sequence
Maintain a clear record of key events and stages associated with the survey assignment.
Discrepancies
Identify inconsistencies between measurements, records, declarations or other available evidence.
Supporting Evidence
Retain relevant documentary and observational evidence in line with professional survey practice.
Final Report
Present verified facts, calculations, limitations and conclusions in a clear professional report.
Quantity Discrepancies
What Is a Bunker Quantity Dispute?
A bunker quantity dispute occurs when the parties do not agree on the quantity delivered or accepted according to the relevant measurement and contractual evidence.
Quantity differences may arise from inconsistent records, measurement uncertainty, incorrect vessel or delivery information, calculation differences, system issues or disagreement about the evidence used to establish the final delivered quantity.
The surveyor's role is to remain independent, preserve relevant information and report verified facts. A survey report should distinguish observed evidence from allegations and should make clear any limitations affecting the conclusion.
Where a specific port such as Singapore provides formal dispute-management procedures, the applicable authority's current process should be followed. Surveyors and operators should not rely on outdated course notes when local standards have changed.
Fuel Quality Context
Bunker Quantity vs Bunker Quality
Quantity and quality are related commercial issues, but they are not the same type of verification.
Bunker Quantity
Focuses on how much fuel was supplied or remains onboard, based on the relevant measurement system, calculations and documentary evidence.
- Quantity measurement
- Transfer records
- Measurement-system evidence
- Survey calculations
- Quantity discrepancies
Bunker Quality
Focuses on whether the supplied fuel meets the agreed or applicable specification and quality requirements, normally supported by representative sampling and laboratory analysis.
- Fuel specification
- Sampling
- Laboratory testing
- Quality parameters
- Specification disputes
Current marine-fuel specification reference: ISO 8217:2024 is the current published edition of the international marine-fuel specification standard, replacing ISO 8217:2017.
Bunker Surveying vs Bunker Quantity Survey
Which IMT Bunker Surveying Pathway Should You Choose?
IMT currently lists both Expert in Bunker Surveying and Expert in Bunker Quantity Survey, with different curriculum combinations.
Expert in Bunker Surveying
The current programme combines Marine Cargo Survey Practices, Essential Law for Cargo Surveyors, Technical Report Writing Skills and a specialist Expert in Bunker Surveying module.
View Bunker Surveying Course →Expert in Bunker Quantity Survey
The current IMT programme combines core cargo-survey subjects with Draught Surveying and Bunker Surveying, providing a broader quantity-survey pathway.
View Bunker Quantity Survey Course →Course Learning Focus
What You Should Learn from Bunker Surveyor Training
A professional bunker-surveying course should combine marine-survey fundamentals with modern bunker measurement, documentation and reporting knowledge.
- Role and responsibilities of a bunker surveyor
- Marine cargo survey practice
- Bunker quantity-survey principles
- Tank-gauging concepts
- Mass flow metering awareness
- Bunker delivery documentation
- Measurement records and survey evidence
- Quantity discrepancy awareness
- Commercial and legal context for cargo surveyors
- Professional independence and evidence handling
- Technical calculation awareness
- Survey report structure
- Current Singapore bunkering standards
- Marine-fuel quality/specification awareness
Who Should Enroll
Who Is the Bunker Surveying Course For?
The course is relevant to professionals involved in marine fuel, cargo surveying, ship operations, technical management and maritime claims.
Marine & Cargo Surveyors
Survey professionals seeking specialist knowledge in bunker quantity verification and reporting.
Chief Engineers
Senior engineers involved in receiving, documenting and managing marine fuel onboard.
Masters & Senior Officers
Shipboard personnel seeking stronger understanding of bunker-delivery evidence and survey practice.
Technical Superintendents
Shore-based managers overseeing fuel costs, vessel operations and bunker discrepancies.
Bunker Traders & Suppliers
Commercial professionals seeking clearer understanding of measurement and survey evidence.
Shipowners & Charterers
Personnel responsible for bunker procurement, commercial control and quantity disputes.
P&I / Claims Personnel
Professionals reviewing evidence associated with marine fuel quantity or delivery disputes.
Maritime Consultants
Consultants supporting cargo-survey, bunker or technical maritime assignments.
Current IMT Course
How the IMT Expert in Bunker Surveying Course Is Delivered
The current catalogue lists the programme as an online Advanced Diploma Cargo Surveying pathway with 52 hours of study.
Three Compulsory Subjects
Marine Cargo Survey Practices, Essential Law for Cargo Surveyors and Technical Report Writing Skills for Surveyors.
Specialist Bunker Module
The speciality section focuses on Expert in Bunker Surveying and includes the current programme quiz.
Flexible Online Study
The current course page describes mainly independent online study with educational-team support and downloadable learning material.
2026 Standards Check
Current Standards Relevant to Bunker Surveying
Standards evolve, so training material should be checked against current versions rather than relying on legacy references.
SS 600:2022
Singapore's current Code of Practice for bunkering by bunker tankers using tank gauging. It superseded SS 600:2014 from 1 January 2023.
MPA Bunkering Standards →SS 648:2024
Singapore's current Code of Practice for Bunker Mass Flow Metering, mandatory for applicable custody-transfer deliveries from 1 April 2025.
MPA SS 648:2024 Circular →ISO 8217:2024
The current international specification for marine fuels used in marine diesel engines and boilers, including petroleum, synthetic and renewable fuel sources.
Official ISO 8217:2024 →Frequently Asked Questions
Bunker Surveying FAQ
Answers to common questions from surveyors, engineers, superintendents and maritime professionals researching bunker surveyor training.
What is bunker surveying?
Bunker surveying is the independent verification and documentation of marine fuel quantity and related delivery evidence, using the measurement method and procedures applicable to the assignment.
What does a bunker surveyor do?
A bunker surveyor reviews measurement and delivery information, checks relevant records and documents, identifies inconsistencies and prepares an independent survey report describing the verified evidence.
What is a bunker quantity survey?
A bunker quantity survey focuses on determining or verifying the quantity of marine fuel delivered or remaining onboard using appropriate measurement records, calculations and supporting documentation.
What is a mass flow meter in bunkering?
A bunker mass flow meter measures the mass of fuel transferred during delivery. In Singapore, approved MFM systems are mandatory for applicable bunker deliveries under the current MPA framework.
Is SS 600:2014 still the current Singapore bunkering standard?
No. SS 600:2014 was superseded by SS 600:2022 from 1 January 2023.
What is the current Singapore standard for bunker mass flow metering?
The current standard is SS 648:2024. MPA mandated its use for applicable custody-transfer bunker deliveries to ocean-going ships from 1 April 2025.
What is the difference between bunker quantity and bunker quality?
Quantity concerns how much fuel was transferred or remains onboard. Quality concerns whether the fuel meets the agreed or applicable specification and is normally assessed using representative sampling and laboratory testing.
What is the current ISO marine-fuel specification?
ISO 8217:2024 is the current published international marine-fuel specification standard and replaced ISO 8217:2017.
Can bunker surveying be studied online?
Yes. IMT currently lists Expert in Bunker Surveying as an online Advanced Diploma Cargo Surveying programme with 52 hours of study.
Which IMT bunker course should I choose?
Expert in Bunker Surveying is the focused specialist pathway. Expert in Bunker Quantity Survey combines Bunker Surveying with Draught Surveying and core cargo-surveying subjects for a broader quantity-survey route.
Bunker Surveying Training Enquiry
Ask About the Bunker Surveying Course
Tell us about your current maritime role and whether your goal is bunker surveying, quantity surveying, marine fuel operations or wider cargo-surveying development.
✓ Bunker Surveying course and enrollment information
✓ Guidance based on your current survey or engineering role
✓ Help choosing Bunker Surveying vs Bunker Quantity Survey
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