Off-Hire Bunker Survey Philippines – Container Vessel Case Study
Independent off-hire bunker quantity survey for a container vessel at charter redelivery, verifying remaining fuel quantities and supporting accurate final reconciliation between contractual parties.
Case Study Overview
This case study outlines an independent off-hire bunker quantity survey carried out at vessel redelivery. The assignment focused on verifying the remaining fuel quantities onboard and supporting a transparent and technically supported settlement between the contractual parties.
Service: Off-Hire Bunker Survey
Client Type: Shipowner / Charterer
PAMS Pacific Admiralty Maritime Services attended the matter promptly, documented the relevant findings, and issued a structured independent survey report to support the client's technical, commercial, and insurance decision-making.
Off-Hire Bunker Survey – Container Vessel
A container vessel was being redelivered at the end of a charter period. Accurate measurement of the bunkers remaining onboard was required to establish the final Remaining On Board (ROB) quantities and support the calculation of final fuel adjustments.
The independent survey was intended to provide an objective technical record of the bunker quantities at the moment of redelivery and reduce the potential for post-redelivery disputes relating to fuel quantities and associated financial settlement.
Scope of Work
The bunker survey included physical attendance onboard and verification of the vessel's declared remaining fuel quantities. The scope included:
Vessel Attendance
- Attendance onboard during redelivery
- Verification of vessel condition and survey timing
- Review of relevant vessel declarations
- Coordination with representatives of the contractual parties
Bunker Measurement
- Measurement of fuel oil tanks
- Measurement of diesel and gas oil tanks
- Verification of remaining onboard quantities
- Recording of relevant tank measurement data
Technical Verification
- Review of tank soundings
- Cross-check of vessel declarations
- Review of tank calibration information
- Application of relevant measurement corrections
Documentation
- Photographic documentation
- Recording of survey observations
- Documentation of calculations
- Preparation of independent survey report
Bunker Survey Methodology
The survey process was based on physical verification of the vessel's fuel tanks and comparison of the measured quantities with the vessel's declared figures and available technical information.
Tank soundings were taken and the relevant measurement information was recorded. Where applicable, temperatures, density information, tank calibration data, trim, list, and other relevant technical parameters were considered when establishing the final quantities.
Bunker Delivery Notes and other available fuel documentation may also be reviewed where required to support the technical verification of the declared fuel characteristics and quantities.
Survey Findings
The measured bunker quantities were found to be within the expected operating variance when compared with the declared vessel figures. The relevant measurements, calculations, observations, and supporting information were documented in the final independent survey report.
Quantity Verification
Remaining bunker quantities were physically measured and compared against the vessel's declared figures.
Documentation Review
Available tank data, vessel declarations, bunker documentation, and relevant technical information were reviewed as part of the survey.
Measurement Records
Soundings and relevant measurement information were recorded to provide a transparent technical basis for the final calculation.
Independent Reporting
Findings and calculations were presented in a structured independent survey report for use by the contractual parties.
Survey Outcome
An independent off-hire bunker survey report was issued to the relevant parties, providing a factual technical basis for final bunker reconciliation and settlement following vessel redelivery.
The documented measurements and calculations helped reduce the potential for disagreements concerning the remaining onboard quantities and provided supporting technical evidence for the final commercial reconciliation.
Why Independent Off-Hire Bunker Surveys Matter
Bunker quantities can represent a significant financial component of vessel delivery and redelivery. Differences between declared and physically measured quantities can lead to commercial disputes if the figures are not independently verified.
An independent bunker survey provides the parties with a common technical reference point and supports transparent reconciliation of the fuel quantities remaining onboard.
- Independent verification of Remaining On Board (ROB) quantities
- Accurate technical measurement at vessel redelivery
- Supporting evidence for final bunker reconciliation
- Reduction of commercial bunker quantity disputes
- Documented calculations and survey observations
- Photographic and technical evidence where applicable
- Independent reporting for shipowners and charterers
Independent Technical Survey Approach
Physical Verification
Physical attendance and measurement of the relevant fuel tanks are carried out to establish the actual quantities onboard.
Technical Calculations
Survey calculations consider the available tank data and relevant technical corrections required to establish the reported quantities.
Evidence Collection
Relevant soundings, documents, declarations, photographs, and technical observations are recorded as appropriate to the agreed scope.
Independent Report
The final report presents the survey findings and calculations in a clear and structured format suitable for technical and commercial reference.
Independent Marine Surveying
The objective of an off-hire bunker survey is not to represent the commercial interests of one contractual party, but to establish an objective technical record that can assist all relevant parties in reaching an accurate and transparent reconciliation.
Off-Hire Bunker Survey FAQ
What is an off-hire bunker survey?
An off-hire bunker survey is an independent technical verification of the fuel quantities remaining onboard a vessel at the time of charter redelivery. The survey establishes the Remaining On Board (ROB) quantities of fuels such as VLSFO, LSMGO, MGO, or other applicable marine fuels.
Why is an off-hire survey necessary for redelivery?
An independent survey provides a documented third-party record of the bunker quantities at redelivery. This helps ensure that final financial settlement between the contractual parties is based on independently verified technical information and reduces the risk of bunker quantity disputes.
What does the PAMS bunker survey process include?
The survey may include physical tank soundings, recording of temperatures, review of density information, verification of tank calibration data, consideration of trim and list corrections where applicable, comparison with vessel declarations, and preparation of the final bunker quantity calculations.
Does the survey include VLSFO and LSMGO?
Yes. Depending on the vessel's fuel configuration and agreed scope, the survey can include VLSFO, LSMGO, MGO, and other applicable fuel grades remaining onboard at delivery or redelivery.
How is the final bunker report used?
The independent report provides the technical record of the measured bunker quantities and can be used by the owner, charterer, brokers, insurers, or other relevant parties to support final bunker reconciliation and commercial settlement.
Why are independent bunker surveys important?
Independent bunker surveys provide objective verification of fuel quantities at delivery and redelivery. Standardized measurement procedures, documented calculations, and factual reporting help improve transparency and reduce the potential for commercial disputes.
Where does PAMS provide bunker survey support?
PAMS Pacific Admiralty Maritime Services provides independent marine surveying and technical consultancy support in the Philippines and for international maritime assignments, subject to the agreed project scope and location.
Technical Reference Framework
Depending on the vessel and agreed scope, bunker quantity surveys may involve review of vessel tank calibration information, bunker documentation, measurement records, fuel characteristics, and applicable contractual requirements.
Tank Measurement
Physical tank soundings and available calibration information are used to establish the measured bunker quantities.
Fuel Documentation
Available bunker delivery documentation and fuel information may be reviewed to support the survey calculations.
Vessel Data
Tank data, trim, list, temperatures, density and other relevant vessel information may be considered where applicable.
Independent Reporting
Survey observations, calculations, measurements and supporting evidence are presented in a structured technical report.
Case Study Reference Notice
This case study is presented to illustrate an independent marine surveying methodology and technical reporting approach. The actual scope of any bunker survey depends on vessel type, location, accessibility, fuel configuration, available tank calibration data, contractual requirements, measurement conditions, and the agreed survey scope. Survey findings and reported quantities are based on the information and physical measurements available at the time of attendance.
Need an Independent Bunker Survey?
Request an independent delivery, redelivery, on-hire, off-hire, or bunker quantity survey. Provide the vessel, port, survey timing, fuel grades, and specific requirements so the technical scope can be reviewed.
Request Technical Consultation View Marine Surveys