Bunker Survey

Impartial and accurate quantity/quality measurement services for marine fuel oil bunkers




To avoid conflicts of interest and to guarantee integrity, Ruswal Global only carries out Bunker surveys for shipping companies, charter agencies and fuel receivers. We do not carry out any surveys for fuel suppliers.

Ruswal global operates in the Russian Federation, European countries such as the Netherlands, Belgium, and ports in the Baltic, Northern and Mediterranean seas. We employ well trained and experienced bunker surveyors, who have many years of professional and specialised experience with B.Q.S.

Bunker Quantity Survey (BQS) 

At Ruswal Global we offer independent and accurate quantity measurement service for marine fuel oil bunkers. We provide complete documentation and photographs for each survey to support any claims to quality disputes. We also carry out pre-delivery tank measurements on both the bunker tanker and the receiving vessel.

Considering the present excessive bunker oil prices, we deem this type of survey necessary in order to make sure that the quantities as mentioned on the Bunker Delivery Notes (BDN) are true and correct.

Before and after bunkering our surveyors sound/calculate the contents of all bunkers of the supplying barge and receiving vessel. The difference between the contents before and after bunkering is the exact quantity of oil supplied to the sea going vessel and must be in line with the supplied quantity as mentioned on the BDN.  Ruswal Global’s experience and processes give us an over 95% success rate in recovering shortfalls of fuel delivered.

Once one of our Surveyors is appointed to carry out Bunker Survey he will remain with the vessel from start to finish. This ensures consistency and responsibility for the total process.

Our Bunker Surveyors are also instructed to negotiate on behalf of our client if a shortage of oil is discovered.



Ruswal Global surveyors provide professional quantity inspection services for clients on a global basis.

Experienced bunker fuel surveyors offer impartial, independent quantity measurement inspection services for marine fuels, issuing detailed bunker survey reports to confirm fuel delivery and report bunker fuel shortages. Ruswal Global bunker fuel quantity and quality reports help clients support fuel shortage claims and quality disputes.

Bunker Fuel Quantity (BQS) services include:

  • Measurement of the bunker tanker and receiving vessel, before and after delivery;
  • Bunker fuel sampling and testing to accepted industry standards;
  • Quantity delivered calculation, based on density testing and temperature measurements;
  • Detailed bunker survey reports;
  • Sampling documentation photographs as requested or permitted.

Ruswal Global's marine bunker fuel surveying services are supported by experienced bunker fuel quality testing laboratories. Marine bunker fuels are tested to ISO 8217, Marpol Annex VI and other specifications. 

Marine bunker fuel quality testing and inspection:

 Ruswal Global provides marine bunker fuel testing and inspection services, including marine bunker fuel quantity surveys. Marine fuel analysis is performed to ISO 8217 specifications, helping your ship fuel comply with Marpol Annex VI, the EU Sulphur Directive, Sulphur Emission Control Area (SECA) requirements, and other legal and quality standards.

Marine bunker fuel testing and inspection may include:

  • Bunker Fuel Analysis;
  • Bunker Quantity Survey (BQS);
  • Bunker Fuel Chemical Contamination Screening;
  • ISO 8217 Fuel Standard.


Bunker Fuel Analysis:


Bunker fuel analysis ensures marine fuel oil quality.

 Bunker fuel quality analysis helps prevent costly ship engine failure, downtime, and repairs. Analysing marine bunker fuel also helps ship owners meet marine fuel environmental regulatory compliance.


Ruswal Global provides laboratory tests of the marine fuels to confirm the bunker fuel quality. Laboratory analysis is performed to ISO 8217, Marpol Annex VI and other industry specifications. Bunker fuel testing and inspection capabilities are located in major ports of Russian Federation, Baltic countries, ARA (Amsetrdam, Rotterdam and Antwerp) area, Mediterranean and worldwide. 

Bunker fuel oil analysis and inspection include:

  • Asphaltenes, Ash
  • Carbon Residue
  • Density
  • Flashpoint
  • Hydrogen Sulfide
  • Microbes Contamination
  • Pour Point
  • Stability
  • Sulfur Content 
  • Total Sediment Potential (TSP)
  • Viscosity
  • Water Content
  • Bunker Fuel Chemical Contamination Screening
  • And more


Pre-testing of Bunker Fuels:

Pre-testing marine bunker fuel reduces the risk of costly engine damage and expensive debunkering.


Bunker fuel sampling and pre-testing is provided by Ruswal Global, enabling bunker fuel quality to be known prior to delivery to the ship. Pre-testing gives marine bunker fuel purchaser's the ability to evaluate fuel quality and either accept the fuel or request the supplier to provide an alternative bunker stem.

Pre-testing of marine bunker fuel helps ensure off-specification fuel is not delivered to the vessel and reduces the risk for costly debunkering of bad fuel.


 Marine Bunker fuel pre-testing:

  • Ruswal Global personnel remain in contact with the fuel supplier to avoid or minimize potential delays.
  • Samples are transported to one of our bunker fuel labs, where a volumetric composite of all tanks sampled is prepared.
  • Composite samples are tested to an abbreviated version of ISO 8217, using modified test methods.
  • Testing is prompt, between 4-6 hours. If fuel parameters fail to meet the fuel specification additional testing and time may be required.
  • Results can be reported to the vessel and/or client before the barge commences pumping bunker fuel to the vessel, so that the fuel quality designated for that client vessel is confirmed and known prior to bunkering.
  • In some cases, barges are instructed by the supplier to wait for test results before fuel pumping operations.
  • Sampling of the barge is a critical part of the operation, as non-representative samples affect quality. Ruswal Global surveyors are instructed to follow proper sampling procedures. Copies of the sampling procedure and pre-testing analysis protocol are included with client quotations.