Bunker Survey in Spain for Ships and Marine Fuel Operations

Bunker Quantity Survey (BQS)

A Bunker Quantity Survey (BQS) determines the actual quantity of fuel delivered on board through independent technical verification.

It includes:

• Tank measurements before and after the supply

• Volumetric calculations with temperature correction

• Calibration table verification

• Density control and conversion factor application

• Supervision of fuel transfer operations

The objective is to prevent financial discrepancies in marine fuel supply operations.

OBQ / ROB Survey During Charter Changes

During a charter change, it is essential to determine:

• ROB (Remaining On Board): fuel remaining at the end of the contract

• OBQ (On Board Quantity): actual quantity on board at delivery

Technical measurement ensures contractual transparency and prevents disputes between charterer and shipowner.

Detective Survey in Fuel Discrepancies

A Detective Survey is conducted when significant differences arise between the declared quantity and the actual quantity received.

The assessment may include:

• Verification of bunkering procedures

• Inspection of pipelines and valves

• Review of operational records

• Technical evaluation of possible losses or manipulation

This service is critical in contractual claims and insurance disputes.

Applied Technical Methodology

Lhe intervention may include:

• Manual and electronic tank measurements

• Use of certified sounding equipment

• Volumetric calculations with temperature correction

• Fuel density determination

• Application of international standards

Accuracy in measurement is crucial in high-value fuel operations.

Application by Vessel Type

This service is primarily provided for:

• Merchant vessels and commercial units

• Tankers

• Container ships

• Bulk carriers

• Ferries

It may also apply to large yachts and specialized units when significant bunkering operations are involved.

Bunker Survey Technical Report

The report includes:

• Recorded measurements

• Applied calculations

• Technical corrections

• Final quantity determination

• Relevant technical observations

The document may be used as contractual support and evidence in commercial disputes.