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Marine Survey

Bunker / ROB Survey

Independent measurement and reconciliation of fuel and lubricating oil quantities.

Scope of attendance

  • ROB measurement
  • Tank sounding
  • Tank-table and quantity-record review
  • Bunker quantity verification
  • Bunker sampling where agreed
  • Seal verification where agreed
  • Documentation
  • Dispute-support evidence

Who needs this service

  • Owners and charterers verifying bunker figures
  • Buyers and sellers of bunkers
  • Parties settling ROB disputes

How it works

  1. 1
    Confirm basis of measurement

    Agree the attendance purpose, tanks in scope, sounding method, available tank tables and the delivery, receipt or charter figures to be compared.

  2. 2
    Sound and record tanks

    Measure fuel and lubricating oil tanks using the agreed method, recording relevant observed trim, list, temperatures and tank conditions where applicable.

  3. 3
    Calculate and reconcile

    Calculate quantities against available tank tables, document assumptions and compare the results with the relevant supplied figures and records.

  4. 4
    Report evidence

    Provide measured quantities, methodology, calculations, supporting records and any agreed sample or seal observations. The report records evidence; it does not allocate liability.

Frequently asked questions

What information should be available for a bunker or ROB survey?

Tank tables, current fuel records, relevant bunker delivery or receipt documents, vessel particulars and the requested attendance time help establish the calculation basis.

How are bunker quantities verified?

By sounding the agreed tanks, recording relevant conditions, applying the agreed calculation method and comparing the calculated quantities with available tank tables and documents.

Can sampling or seal checks be included?

Yes, where requested and practicable. The sampling, sealing and custody procedure should be agreed before attendance.

What does the report provide?

A clear record of measured quantities, calculation method, available documents reviewed and supporting evidence. It does not determine contractual responsibility between the parties.

Findings are documented with clear observations, supporting evidence and practical follow-up recommendations where appropriate. The final report is structured for commercial and technical review, and attendance timing, access and the agreed scope are confirmed before work begins.

REQUEST A BUNKER SURVEY