Bow view of a bulk carrier at anchor

Key takeaways

  • Use the same cargo quantity and service arrangement for the base comparison.
  • Separate freight from additional handling, mobilization and support costs.
  • Record who receives each invoice and who ultimately bears it.
  • Keep uncertain exposure visible instead of assigning an unexplained allowance.
  • Recalculate the comparison when the operating arrangement changes.

Begin with the shipment service being purchased

A price is meaningful only in relation to its scope. A freight quotation may describe the sea movement clearly while leaving the handling interface dependent on further agreement. Another proposal may include a service that the first expects the buyer to arrange. Placing both prices in a single column hides the difference.

Write a service description before opening the spreadsheet. Identify the cargo, quantity basis, origin, destination and intended handling arrangement. State which equipment is expected from the vessel, which comes from shore and who coordinates the providers. The description should match the actual enquiry and accepted operational proposal.

BIMCO describes GENCON as a voyage charter party. The agreed form and amendments need review when allocating shipment costs. BIMCO GENCON information.

It can expose assumptions and estimate consequences, but it cannot determine a disputed obligation by choosing a spreadsheet label. Where the allocation is unclear, show it as unresolved and obtain advice from the authorized commercial or legal team. Check the current text before relying on a standard form description.

Draw the boundary around handling and support

List each service required to execute the proposed arrangement. Include the vessel service, any hired equipment, delivery and collection of that equipment, shore receiving support and other services identified by the providers. Do not assume that a quotation for an item includes every activity needed to put it into use.

For each line, capture the provider, scope, charging basis, currency, payer and evidence date. Also record whether the amount is a quotation, an estimate, a contractual amount or an unpriced item. These distinctions explain the confidence level of the total without pretending that every line has equal certainty.

Separate availability from price. A favorable equipment quotation is not useful to the base case if the provider has not confirmed availability for the intended operation. Similarly, an available service may not yet have the acceptance needed for the proposed vessel and terminal interface. The model should show these as dependencies, not merely as footnotes beside a number.

Avoid allocating the same service twice. If freight includes an agreed handling component, check whether the shore estimate duplicates it. If a supplier's package includes mobilization, do not add a second generic mobilization line unless it covers a distinct activity. Scope reconciliation is often more valuable than refining an uncertain unit rate.

Distinguish payer, cost bearer and decision maker

The party that receives an invoice may differ from the party expected to bear the cost under the commercial arrangement. The party able to authorize the service may be different again. Keep these roles separate in the model so that a cost does not disappear merely because it will initially be paid elsewhere.

For internal budgeting, define the perspective being compared. A cargo buyer's landed transport cost is not necessarily the same as a charterer's voyage expense or an owner's revenue assessment. Mixing perspectives creates misleading totals, particularly when reimbursements or services arranged by another party are involved.

Use a reconciliation column for pass-through amounts. Show the gross payment, expected recovery and the basis for treating recovery as available. If recovery depends on unresolved agreement, avoid presenting the net amount as settled. The commercial principal should see both the cash requirement and the allocation question.

This discipline also helps with approval. A person may authorize the purchase of a service without authority to alter the charter allocation. Record what was approved, by whom and within which boundary. The purpose is to make the model consistent with the actual decision rights.

An illustrative comparison with different handling packages

The following example is fictional and demonstrates arithmetic only. It does not represent market rates, a particular vessel's capability or an estimate for a real terminal. Both proposals are assumed to cover the same cargo quantity and accepted operating arrangement; that assumption would need evidence in an actual comparison.

ILLUSTRATIVE: The cargo quantity is 50,000 tonnes. Proposal A quotes freight at USD 16.40 per tonne, producing freight of USD 820,000. Its separately arranged equipment costs USD 42,000, mobilization costs USD 18,000, and shore support costs USD 35,000. The compared total is USD 915,000, or USD 18.30 per tonne.

ILLUSTRATIVE: Proposal B quotes freight at USD 17.20 per tonne, producing freight of USD 860,000. The agreed equipment component is included in that proposal, while mobilization is USD 8,000 and shore support is USD 30,000. Its compared total is USD 898,000, or USD 17.96 per tonne.

ILLUSTRATIVE: Proposal B's freight is USD 40,000 higher, but its additional compared costs are USD 57,000 lower. It therefore has a USD 17,000 lower compared total, equivalent to USD 0.34 per tonne. The comparison excludes every cost outside the stated boundary.

The conclusion is deliberately narrow. The second proposal has a lower total within the example's assumptions. It has not been shown to have better operational acceptance, more favorable contract terms or less schedule exposure. Those questions require separate review before a commercial selection.

The useful output is the bridge between freight and total cost. It explains why the ranking changes and identifies the assumptions that matter. If the equipment component in Proposal B is later excluded, the team knows exactly which line must be reopened rather than rebuilding the model from memory.

Use a cost matrix that carries its evidence

Cost familyEvidence to requestComparison treatment
FreightQuotation with quantity and scope basisCalculate using the common cargo basis
Equipment hireSupplier scope and availability statusInclude only within the stated arrangement
MobilizationDelivery, positioning and collection boundaryReconcile against package inclusions
Shore supportReceiver or contractor quotationIdentify included facilities and services
Variable exposureAgreed charging trigger or documented assumptionModel separately from the base total
Unpriced serviceNamed provider and outstanding questionKeep visible as unresolved
Recovery from another partyAccepted allocation or explicit conditionDistinguish gross cash from expected net cost

The matrix should link to source documents rather than contain copied contractual text. A reviewer needs to verify the basis quickly, including exclusions and validity. An attractive total without accessible evidence is difficult to approve and even harder to revise when the shipment changes.

Choose consistent treatment for taxes, currency conversion and other financial adjustments relevant to the actual transaction, with appropriate professional input. Do not silently include an adjustment for one proposal and omit it for another. If it cannot yet be determined, explain the gap and its potential influence on the decision.

Model uncertain time without pretending to settle liability

Handling uncertainty can create time-related cost questions, but an estimated duration is not a determination of contractual liability. Separate the operational scenario from the legal allocation. The former asks what might happen; the latter asks which agreed terms apply to those facts.

Create a base scenario with the currently supported arrangement and a disruption scenario linked to a specific event. For example, the hired equipment may arrive later than planned, or the receiver may revise its service window. Describe the event and identify the costs that would change. Avoid adding a generic contingency that cannot be traced to any assumption.

Where the financial consequence depends on contract interpretation, label the calculation as a scenario for review. The model can help the principal understand materiality without asserting that a particular party owes the amount. Keep any legal advice or agreed allocation referenced separately.

Also distinguish cost exposure from decision flexibility. A proposal with a slightly higher base cost may preserve an alternative receiving arrangement. That option has commercial relevance, but its value should be explained through a specific scenario rather than assigned an arbitrary saving.

Keep the denominator honest

A per-tonne result depends on the cargo quantity used. If proposals assume different parcels, dividing both totals by the buyer's preferred quantity conceals the difference. Show each quoted quantity and, where useful, request a revised proposal on a common basis.

If the shipment quantity remains provisional, display the total-cost structure and identify which lines vary with quantity. Some charges may follow a unit basis while others reflect a package or minimum commitment. Use the provider's actual quotation rather than guessing how a charge behaves.

Do not label a lower unit cost as a lower shipment cost when it requires purchasing or transporting more cargo. The buyer may not need the additional volume, or the receiving plan may not accommodate it. A quantity decision belongs with the cargo sale and operational plan, not only with the freight calculation.

For internal reporting, preserve both total spend and the unit figure. This helps the commercial principal understand the cash commitment while allowing a consistent comparison of supported alternatives.

A fictional omission changes the preferred proposal

In this fictional case, a buyer initially favors an Ultramax proposal because its freight rate is lower. The receiving team plans to use hired equipment, and the procurement contact has obtained a short quotation from a supplier. The quotation is entered into the model as a complete handling package.

During scope review, the operations coordinator asks who will arrange delivery and collection of the hired equipment. The supplier explains that these services are outside its offer. The buyer also learns that the shore receiving support was priced on a different operating arrangement from the one described in the vessel enquiry.

The team pauses the price ranking and reconciles the service descriptions. It requests a complete supplier boundary, confirms the intended shore arrangement and asks both vessel bidders to reconfirm affected assumptions. The revised comparison shows a different relationship between freight and additional costs.

The fictional team does not select an offer solely because the new total is lower. It first checks that the providers and responsible technical parties support the same arrangement. The cost model becomes a record of a coherent shipment proposal rather than a collection of unrelated quotations.

Maintain the estimate through operational handover

Once a proposal is chosen, freeze the approved estimate as a baseline and keep subsequent revisions separate. This allows the team to explain whether a change arose from a new cargo quantity, a revised handling arrangement, an omitted service or a different allocation decision.

Every change should identify the triggering event, the affected line, the evidence and the authorizing person. A revised total without that explanation can conceal a scope expansion. Conversely, a visible change log allows the principal to approve a necessary adjustment without reopening unrelated parts of the shipment.

At handover, provide the operations team with the service boundary and outstanding pricing questions, not just the approved budget. The person ordering a service needs to know what was included and which supplier assumptions must remain true. This reduces the chance that a necessary operational change is made without understanding its commercial effect.

After completion, reconcile actual invoices against the same categories. Distinguish a forecasting difference from a scope difference. That distinction improves the next enquiry more effectively than simply increasing every allowance.

Common mistakes

Ranking freight rates before reconciling the handling package can favor an incomplete proposal. Compare the same service boundary first.

Treating an equipment quotation as an all-inclusive operating arrangement can omit delivery, collection or support services. Ask providers to identify exclusions explicitly.

Netting off an expected reimbursement without confirming its basis hides both cash exposure and an allocation question. Show gross and net views separately where relevant.

Combining operational delay scenarios with conclusions about liability turns a useful estimate into an unsupported contractual assertion. Keep the two analyses distinct.

The approval question the model should answer

The final approval request should state which shipment service is being purchased, the supported base cost and the material unresolved exposures. It should also explain what change would require a fresh approval. A total alone does not tell the principal whether the team is committing to a complete service or only part of one.

If an unpriced item could change the preferred proposal, say so directly. The appropriate next step may be to obtain the missing quotation rather than attach false precision to the current ranking. A transparent incomplete estimate is more useful than a polished total that hides a missing obligation.

Where Zeaclub fits

Zeaclub provides a multi-party shared workspace for owners, charterers, brokers and port agents.

Zeaclub offers digitalised procedures across the voyage workflow.

Explore Zeaclub

Explore 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

Why can higher freight produce a lower compared total?

The higher freight may include services that another proposal leaves for the buyer to arrange. The result depends on the actual inclusions and additional costs. Compare a common service boundary and verify the supporting quotations before drawing a conclusion.

Should hired equipment always be added to freight?

Only if it is required for the selected arrangement and not already included in the compared scope. Confirm the provider, availability, acceptance and charging boundary. Adding an assumed cost without checking inclusions can create double counting.

Can a contingency cover every unresolved item?

A general allowance may support internal budgeting, but it should not conceal a missing service or allocation decision. Identify material unresolved items separately and explain the event each scenario represents. This makes the estimate reviewable.

Does the cost model determine who pays for delay?

No. It can calculate a scenario using stated assumptions, but contractual responsibility depends on the agreed terms and relevant facts. Obtain appropriate review and keep that determination distinct from operational forecasting.

What should change when the receiver changes the discharge plan?

Recheck the service description, provider quotations, equipment assumptions and affected time scenarios. Preserve the previous estimate for comparison, then issue a revision showing why each changed cost follows from the new arrangement.

Primary sources