Aerial view of a tanker's deck and helideck

Key takeaways

  • Use port information to frame the enquiry, then confirm the actual proposition.
  • Keep the supplier's offer aligned with the vessel's accepted requirements.
  • Distinguish the purchase quantity basis from other fuel comparisons.
  • Identify the commercial consequence if the delivery location or period changes.

Rotterdam offers a local LNG planning reference

The Port of Rotterdam publishes an LNG bunker map and identifies LNG bunkering among its port services. Port of Rotterdam LNG information

The map can inform a discussion with the responsible parties. It does not replace their call-specific assessment, allocate a delivery slot or establish that the proposed activity can occur alongside another operation.

For a current transaction, the assessed LNG delivery proposition is not provided; obtain current verified information. Identify the confirmed location, period, supplier arrangement and remaining conditions. If no authorised confirmation is available, retain that status.

Begin with the accepted requirement

Obtain the relevant vessel and technical team's description of the required LNG supply, including the quantity basis and evidence needed for acceptance. The commercial desk should preserve that requirement rather than infer it from an earlier liquid-fuel order.

Do not convert a conventional fuel quantity into an LNG purchase using an unsupported rule of thumb. If a comparison needs a conversion or energy basis, obtain the appropriate supported inputs and responsible review.

The supplier's quotation should describe the offered product and quantity clearly. A familiar unit label can still conceal a different basis, so resolve it before calculating the payable amount or comparing another proposition.

Match the delivery opportunity with the wider call

Identify where and when the vessel can receive the proposed supply according to the responsible parties. Ask whether the delivery plan depends on a particular berth, a separate opportunity or completion of another activity.

The supplier's availability should be matched to that assessed opportunity. If the overlap is conditional, record the condition instead of treating the earliest supplier indication as the expected completion time.

A revised cargo programme may change the usable bunker period. The desk should therefore know which schedule event would require the supplier to reconfirm its offer and whether the change could create additional cost.

Separate planning evidence from operating instructions

The commercial file should identify the relevant acceptance and confirmation references. Qualified vessel, supplier and port-side teams determine the technical arrangements and safety requirements within their responsibilities.

The buyer should not attempt to create an operational sequence from the public map or a generic checklist. The useful commercial question is whether the proposed arrangement has been assessed and what conditions remain before it can be committed.

Where the assessment depends on a specific product or supplier arrangement, carry that scope into the order. Acceptance of a different earlier delivery should not be presented as proof that the new proposition is suitable.

A call-specific LNG planning matrix

Planning questionEvidence to obtainCommercial implication
What is required?Accepted product and quantity basisEstablishes the purchase being priced
Where can it occur?Authorised location assessmentDetermines whether the proposed call can accommodate supply
When is it usable?Vessel opportunity and supplier confirmationReveals a conditional or missing overlap
What changes if the call moves?Reconfirmation trigger and termsIdentifies potential extra services or revised pricing
What remains unapproved?Responsible party and scoped conditionPrevents premature commitment
How will the delivery be evidenced?Agreed records and recipientsSupports later quantity and invoice reconciliation

The table should contain references and decisions, not detailed technical procedures.

Fictional case: a berth change alters the proposition

A fictional LNG-fuelled vessel has a preliminary Rotterdam cargo programme and a supplier indication for bunkering during the call. The desk initially treats the indication as a complete supply plan.

The cargo berth changes. The responsible parties require the bunker proposition to be reassessed for the revised location and period, while the supplier clarifies the conditions of its original offer. The desk therefore preserves the old quotation as background rather than assuming it transfers unchanged.

A revised acceptable proposition is obtained before commitment. The buyer compares its complete commercial consequence with other feasible options, without instructing the vessel how to conduct the delivery.

Evaluate an additional opportunity on complete cost

If the supply needs a separate delivery opportunity, include the relevant additional time and service costs in the comparison. Do not assume that the original fuel price includes every consequence of moving the delivery.

Equally, avoid charging the alternative with costs that are common to both choices. Define the baseline clearly so the decision reflects the incremental effect of the revised LNG arrangement.

Check the current text and obtain appropriate review where cancellation, revised delivery or payment conditions affect the purchase. A feasible technical proposition still needs a clear commercial agreement.

Common mistakes

Do not treat the LNG map as a reserved slot or permission for every location. Other errors include importing an unsupported quantity conversion, assuming the cargo programme cannot change and carrying an old quotation across a different delivery proposition. Public capability information does not establish vessel-specific acceptance.

Where Zeaclub fits

Zeaclub offers digitalised procedures across the voyage workflow.

Zeaclub provides 24/7 operating systems and worldwide coverage.

Explore Zeaclub

Learn about Zeaclub

Educational information only; not legal, financial or trading advice. Contract wording and applicable rules control. Verify current requirements and obtain qualified advice before acting.

Frequently asked questions

Does the LNG map confirm a delivery window?

No. Obtain an authorised call-specific confirmation from the relevant parties.

Can a conventional fuel quantity be reused for LNG?

Use the responsible team's supported requirement and quantity basis rather than an informal conversion.

What if the cargo berth changes?

Ask which parts of the accepted bunker proposition need reassessment and commercial reconfirmation.

Who sets the delivery procedures?

Qualified vessel, supplier and port-side personnel determine the technical arrangements within their responsibilities.

Primary sources