Deadfreight Calculation and Example: Formula, Voyage Charter Claims and Shipping Guide

Deadfreight Calculation and Example is one of the most practical subjects in Voyage Chartering because it converts a cargo shortfall into a money claim. Deadfreight arises when Charterers have undertaken to load an agreed quantity of cargo but, at the loading port, they provide less cargo than the contractual quantity that the ship was entitled or required to carry. The missing cargo represents unused earning capacity, and the Shipowners’ claim is designed to put Shipowners in the financial position they would have occupied if the promised cargo had been supplied.

In simple commercial terms, deadfreight is freight on cargo that should have been loaded but was not loaded. The ship has arrived, the carrying space has been reserved, the loading opportunity has been made available, and the voyage has been fixed on the understanding that a defined quantity or a full cargo will be carried. If Charterers do not provide that quantity, the shortage may create a deadfreight claim, provided the Charter Party wording, loading facts, draft restrictions, cargo availability, and freight structure support the claim.

Deadfreight is most commonly discussed in Voyage Charterparties, especially in dry bulk trades where the cargo quantity may be expressed as a minimum and maximum quantity, a full and complete cargo, or a quantity with a margin such as MOLOO, MOLCO, MOLCHOP, MOLCHOPT, or a similar “more or less” option. Deadfreight can also arise in tanker chartering where a minimum quantity is promised, but the commercial mechanism may differ because tanker freight often uses Worldscale, minimum cargo obligations, full cargo options, and overage provisions.

Deadfreight should not be confused with demurrage, detention, damages for delay, or off-hire. Demurrage compensates Shipowners for time lost after laytime has expired. Deadfreight compensates Shipowners for freight lost because the agreed cargo quantity was not supplied. Both claims may arise from the same loading operation, but they are different claims. A Charterer may delay the ship and still load a full cargo, in which case demurrage may arise but deadfreight may not. A Charterer may load quickly but supply insufficient cargo, in which case deadfreight may arise even if there is no demurrage.

What is Deadfreight in Shipping?

Deadfreight is the compensation payable to Shipowners when Charterers fail to load the agreed cargo quantity under a Voyage Charterparty and the freight is calculated by reference to the quantity carried. The word “dead” reflects the fact that part of the ship’s earning capacity has remained unused. The freight could have been earned if the promised cargo had been supplied, but the cargo was missing and the ship sailed with unused cargo space or unused deadweight capacity.

In practice, deadfreight is not merely a mathematical exercise. Before Shipowners can safely claim it, the parties must examine the Charter Party description, the cargo quantity clause, the loading port restrictions, the ship’s actual loadable quantity, the Master’s declaration, the stowage factor of the cargo, the ship’s cubic capacity, the relevant draft limitations, and whether the Charterers were contractually obliged to supply more cargo than they actually provided.

A deadfreight claim usually begins with one basic question: What quantity were Charterers obliged to load? The answer may be a fixed quantity, a minimum quantity, a full cargo, a cargo quantity within an owner’s option, or a cargo quantity within a charterer’s option. The calculation then compares that contractual quantity with the actual cargo loaded. The shortfall, if any, is multiplied by the relevant freight rate or deadfreight rate.

Deadfreight Formula

The usual deadfreight formula is:

Deadfreight = Contractual Cargo Quantity Not Supplied × Applicable Freight Rate

In its simplest form:

Step 1: Establish the contractual cargo quantity that Charterers were obliged to load.
Step 2: Establish the actual cargo quantity loaded on board the ship.
Step 3: Subtract the actual loaded quantity from the contractual quantity.
Step 4: Apply the freight rate or agreed deadfreight rate to the shortfall.
Step 5: Add the resulting deadfreight amount to the freight invoice, unless the Charter Party provides a different payment procedure.

If the freight is USD 50 per metric ton and the shortfall is 2,000 metric tons, the calculation is straightforward:

2,000 metric tons × USD 50 per metric ton = USD 100,000 deadfreight

Basic Deadfreight Calculation Example

In dry bulk chartering, a simple deadfreight calculation may be made as follows:

Captain (Master) declares that the ship can load: 52,000 mtons

Charterers supply: 50,000 mtons

Freight rate: USD 50 per mton

Shipowners may invoice the freight and deadfreight as follows:

Freight on cargo actually loaded: 50,000 mtons × USD 50 per mton = USD 2,500,000

Deadfreight on cargo not supplied: 2,000 mtons × USD 50 per mton = USD 100,000

Total freight and deadfreight invoice: USD 2,600,000

This example shows the commercial logic of deadfreight. The ship was capable of loading 52,000 mtons, but only 50,000 mtons were provided. The missing 2,000 mtons is treated as lost freight-earning cargo, and the Charterers compensate Shipowners for that shortfall.

Deadfreight Calculation in Dry Bulk Chartering

In dry bulk chartering, deadfreight frequently arises in trades such as coal, grain, iron ore, bauxite, alumina, limestone, aggregates, petcoke, fertilizers, and other bulk raw materials. The ship may be fixed for a cargo quantity expressed as a range, for example 50,000 mtons 10% more or less in owners’ option, or 30,000 mtons 5% more or less in charterers’ option. The words around the quantity are critical because they determine who has the right to decide the final cargo quantity.

Where the cargo quantity is expressed as MOLOO, meaning more or less in owners’ option, the Master may usually declare the cargo quantity within the agreed margin after considering the ship’s intake, draft, trim, load line zone, bunkers, freshwater, constants, port limitations, berth restrictions, river restrictions, and cargo stowage factor. If Charterers supply less than the quantity properly declared by the Master, deadfreight may arise.

Where the cargo quantity is expressed as MOLCO, meaning more or less in charterers’ option, the Charterers may have the right to choose a quantity within the agreed range. In that case, Shipowners cannot usually claim deadfreight simply because the ship could have carried more cargo. If Charterers choose a quantity within their contractual option and supply that quantity, there is normally no shortfall.

In dry bulk cargoes, the shortfall may result from poor cargo availability, loading terminal stock problems, inaccurate shipper planning, mistaken cargo declarations, quality rejection, insufficient stockpile, wrong stowage factor assumptions, draft limits at the loading berth, trimming restrictions, or Charterers’ failure to arrange cargo in time. The commercial result is the same: if the Charter Party required a larger cargo quantity and Charterers did not supply it, the missing quantity may generate deadfreight.

Dry Bulk Deadfreight Example 1: Coal Cargo

Scenario:

Contractual minimum cargo quantity: 50,000 mtons coal
Actual cargo loaded: 48,000 mtons
Freight rate: USD 25 per mton

Calculation:

Shortfall: 50,000 mtons − 48,000 mtons = 2,000 mtons

Deadfreight: 2,000 mtons × USD 25 per mton = USD 50,000

In this example, Charterers owe Shipowners USD 50,000 as deadfreight because 2,000 mtons of the agreed coal cargo was not supplied.

Dry Bulk Deadfreight Example 2: Grain Cargo

Scenario:

Contractual minimum cargo quantity: 35,000 mtons grain
Actual cargo loaded: 33,500 mtons
Freight rate: USD 18 per mton

Calculation:

Shortfall: 35,000 mtons − 33,500 mtons = 1,500 mtons

Deadfreight: 1,500 mtons × USD 18 per mton = USD 27,000

In this example, Charterers owe Shipowners USD 27,000 for the unused cargo capacity.

Dry Bulk Deadfreight Example 3: Iron Ore Cargo

Scenario:

Contractual minimum cargo quantity: 60,000 mtons iron ore
Actual cargo loaded: 57,800 mtons
Freight rate: USD 14 per mton

Calculation:

Shortfall: 60,000 mtons − 57,800 mtons = 2,200 mtons

Deadfreight: 2,200 mtons × USD 14 per mton = USD 30,800

In this example, the deadfreight payable is USD 30,800.

Dry Bulk Deadfreight Example 4: Bauxite Cargo

Scenario:

Contractual minimum cargo quantity: 80,000 mtons bauxite
Actual cargo loaded: 78,500 mtons
Freight rate: USD 12 per mton

Calculation:

Shortfall: 80,000 mtons − 78,500 mtons = 1,500 mtons

Deadfreight: 1,500 mtons × USD 12 per mton = USD 18,000

In this example, Charterers are responsible for USD 18,000 as deadfreight.

Dry Bulk Deadfreight Example 5: Limestone Cargo

Scenario:

Contractual minimum cargo quantity: 45,000 mtons limestone
Actual cargo loaded: 43,200 mtons
Freight rate: USD 20 per mton

Calculation:

Shortfall: 45,000 mtons − 43,200 mtons = 1,800 mtons

Deadfreight: 1,800 mtons × USD 20 per mton = USD 36,000

In this example, the deadfreight claim is USD 36,000.

Deadfreight and MOLOO in Dry Bulk Chartering

MOLOO means more or less in owners’ option. This wording is often important because the Shipowners, through the Master, may be entitled to call for a quantity within the agreed range. If the fixture reads 60,000 mtons 10% MOLOO, the range is normally between 54,000 mtons and 66,000 mtons. The Master may calculate the ship’s maximum safe intake and then declare the quantity Charterers must provide within that range.

For example, if the fixture states 60,000 mtons 10% MOLOO and the Master properly declares 65,000 mtons, Charterers must normally provide 65,000 mtons, subject to the exact Charter Party terms and the physical/legal restrictions of the voyage. If Charterers supply only 60,000 mtons, the shortfall is 5,000 mtons. If the freight rate is USD 30 per mton, the deadfreight claim is:

5,000 mtons × USD 30 per mton = USD 150,000

The Master’s declaration must be commercially and technically supportable. It should not be arbitrary. It should be based on draft survey calculations, ship particulars, load line rules, port drafts, berth restrictions, air draft, stowage factor, cargo characteristics, bunkers, freshwater, stores, constant, trim requirements, and any known voyage restrictions. If the declared quantity is not realistic, Charterers may dispute the deadfreight claim.

Deadfreight and MOLCO in Dry Bulk Chartering

MOLCO means more or less in charterers’ option. This wording gives Charterers the right to nominate a quantity within the agreed range. If the fixture reads 50,000 mtons 10% MOLCO, Charterers may usually choose a cargo quantity between 45,000 mtons and 55,000 mtons. If Charterers choose and supply 47,000 mtons, Shipowners may not be able to claim deadfreight simply because the ship could have taken more.

However, deadfreight may still arise under MOLCO if Charterers choose a quantity and then fail to supply the chosen quantity, or if the Charter Party contains a minimum cargo obligation that Charterers fail to meet. Therefore, the exact wording must be read carefully. A small change in the phrase around the cargo quantity can move the risk from Shipowners to Charterers or from Charterers to Shipowners.

Deadfreight and Full Cargo Clauses

Some Charterparties require Charterers to load a full and complete cargo. In such cases, the ship’s actual intake becomes central to the calculation. A full cargo is not always the ship’s summer deadweight. The full cargo may be limited by port draft, load line zone, bunkers required for the voyage, canal restrictions, river restrictions, berth depth, tide windows, cargo stowage factor, cubic capacity, trim requirements, stress limits, and special cargo limitations.

If the ship is not physically able to load more because of safe draft, cubic capacity, or stability restrictions, there may be no deadfreight beyond the quantity actually loadable. Deadfreight is not a windfall; it is compensation for cargo that Charterers were obliged to provide but failed to provide. Shipowners must therefore prove the cargo shortfall against a realistic contractual and operational baseline.

Deadfreight and Lump Sum Freight

Deadfreight normally arises where freight is calculated by cargo quantity. If the freight is fixed as a true lump sum, the commercial position may be different. Under a lump sum freight arrangement, Charterers may pay an agreed amount for the voyage regardless of whether they load a smaller or larger quantity, provided they remain within the Charter Party limits and do not otherwise breach the contract.

For example, if Charterers agree to pay USD 900,000 lump sum freight for the voyage, Shipowners may receive the same freight whether Charterers load 28,000 mtons or 31,000 mtons, assuming the cargo quantity is within the agreed contractual parameters. In that situation, there may be no separate deadfreight claim because the Shipowners have not lost freight on a per-ton basis. However, if the lump sum wording is mixed with minimum cargo obligations, deadfreight wording, or special short-shipment provisions, the result must be determined from the Charter Party wording as a whole.

Deadfreight in Tanker Chartering

In tanker chartering, deadfreight is commonly linked to minimum cargo quantity, full cargo options, natural segregation, cargo grade restrictions, Worldscale freight, overage terms, and Bills of Lading (B/L) quantities. A tanker fixture may state that Charterers must provide a minimum cargo quantity, with an option to load up to a full cargo. If the minimum quantity is supplied, there may be no deadfreight even if the ship could have loaded more. If less than the minimum is supplied, deadfreight may be payable on the shortfall.

A typical tanker wording may be:

Minimum 50,000 mtons, Charterers’ option up to full cargo, no deadfreight for Charterers’ account provided minimum quantity supplied.

If the Captain (Master) calls for 52,000 mtons but Charterers supply 50,000 mtons, no deadfreight is payable if the clause only requires Charterers to supply the minimum quantity. If Charterers supply 48,000 mtons, then the shortfall against the minimum quantity is 2,000 mtons, and deadfreight may be payable on that shortfall.

Tanker Deadfreight Example 1: Crude Oil

Scenario:

Minimum agreed cargo quantity: 90,000 mtons crude oil
Actual cargo loaded: 88,000 mtons
Freight rate: USD 10 per mton

Calculation:

Shortfall: 90,000 mtons − 88,000 mtons = 2,000 mtons

Deadfreight: 2,000 mtons × USD 10 per mton = USD 20,000

The deadfreight payable is USD 20,000.

Tanker Deadfreight Example 2: Refined Petroleum Products

Scenario:

Minimum agreed cargo quantity: 120,000 mtons refined petroleum products
Actual cargo loaded: 117,500 mtons
Freight rate: USD 8 per mton

Calculation:

Shortfall: 120,000 mtons − 117,500 mtons = 2,500 mtons

Deadfreight: 2,500 mtons × USD 8 per mton = USD 20,000

The deadfreight payable is USD 20,000.

Tanker Deadfreight Example 3: Heavy Fuel Oil

Scenario:

Minimum agreed cargo quantity: 50,000 mtons heavy fuel oil
Actual cargo loaded: 48,500 mtons
Freight rate: USD 12 per mton

Calculation:

Shortfall: 50,000 mtons − 48,500 mtons = 1,500 mtons

Deadfreight: 1,500 mtons × USD 12 per mton = USD 18,000

The deadfreight payable is USD 18,000.

Deadfreight and Worldscale Overage in Tanker Chartering

Tanker freight is often calculated using Worldscale. A fixture may state Freight WS120, overage at 50%. This means the main agreed quantity is charged at Worldscale 120, while cargo loaded above the agreed base quantity may be charged at 50% of that rate, depending on the exact clause.

Assume a tanker freight clause states:

Minimum 150,000 mtons, 1-2 grades no heat crude oil, within ship’s natural segregation, Charterers’ option up to full cargo, freight WS120, overage at 50%.

Assume also:

Worldscale flat rate: USD 20 per mton
WS120 equivalent: USD 24 per mton
Overage rate at 50% of WS120: USD 12 per mton
Actual cargo loaded: 160,000 mtons

Freight calculation:

Main cargo freight: 150,000 mtons × USD 24 per mton = USD 3,600,000

Overage freight: 10,000 mtons × USD 12 per mton = USD 120,000

Total freight: USD 3,720,000

The commercial purpose of an overage provision is often to encourage Charterers to provide more cargo where possible. Charterers may receive a lower rate on the additional cargo, while Shipowners earn additional freight above the minimum expected earnings. This is separate from deadfreight, which concerns cargo that should have been supplied but was not supplied.

Deadfreight and Bills of Lading (B/L)

Deadfreight can create practical issues with Bills of Lading (B/L) because the B/L normally states the cargo actually loaded, not the cargo that should have been loaded. If the ship sails with less cargo than the Charter Party required, Shipowners may wish to protect the deadfreight position by issuing a protest or adding an appropriate remark where legally and commercially permissible.

When deadfreight may be claimed, the Captain (Master) should be careful to preserve evidence. This may include the Master’s loadable quantity declaration, draft survey figures, terminal records, shore scale records, loading statements, mate’s receipts, loading logs, statements of facts, communications with agents, Charterers’ instructions, shippers’ cargo supply messages, and any written protest issued before sailing.

If a third-party B/L holder is expected to pay freight, the position can become more delicate. The B/L may not automatically make that holder responsible for deadfreight unless the relevant contractual terms are properly incorporated and enforceable. Shipowners should therefore avoid assuming that a deadfreight claim against Charterers automatically becomes a claim against cargo receivers or B/L holders. The safer position is to document the claim clearly under the Charter Party and follow the agreed payment/security mechanism.

Deadfreight, Lien Clauses and Cargo Security

Many Voyage Charterparties contain a lien clause giving Shipowners a lien on cargo for freight, deadfreight, demurrage, and other sums. In principle, this may allow Shipowners to retain cargo as security for unpaid deadfreight. In practice, enforcement can be difficult. Local law, port practice, receiver identity, cargo ownership, court intervention, customs rules, and the terms of the B/L may all affect whether the lien can be exercised successfully.

A lien clause is most useful when it is clearly drafted, incorporated into the relevant B/L where necessary, and supported by practical control over the cargo. If the cargo has already been discharged and delivered, Shipowners may have lost the physical leverage needed to exercise a lien. For this reason, deadfreight disputes should be identified early, ideally before completion of loading and before the ship sails.

Deadfreight and Cesser Clauses

A cesser clause may provide that Charterers’ liability ceases at a certain point, often when cargo is shipped, while Shipowners receive a lien on cargo for freight, deadfreight, demurrage, or other charges. The commercial idea is that Shipowners will look to the cargo for payment after shipment. However, if the lien is ineffective, disputed, unenforceable, or practically impossible to exercise, the relationship between the cesser clause and lien clause can become a major legal issue.

For deadfreight, this is especially important because the claim may be known at the loading port. If Charterers fail to supply the agreed cargo quantity, Shipowners should not wait until the dispute becomes difficult to prove. They should record the shortage, reserve rights, and follow the Charter Party machinery for claims, notices, and security.

Deadfreight and Laytime

Deadfreight may also affect laytime calculations. In some situations, where Charterers pay deadfreight on cargo not loaded, the laytime position may need to consider whether laytime is calculated on the contractual cargo quantity, the actual loaded cargo quantity, or the quantity on which freight and deadfreight have been paid. The correct answer depends on the Charter Party wording and applicable principles.

This point matters because a Charterer who pays deadfreight may argue that the paid shortfall should be considered when calculating laytime allowance. Shipowners, on the other hand, may argue that laytime should follow the actual cargo operation unless the Charter Party says otherwise. Because this can materially change demurrage or despatch calculations, deadfreight and laytime should be treated together when preparing the final voyage account.

Deadfreight and Demurrage: Main Difference

Deadfreight is about missing cargo. Demurrage is about excess time. They may appear in the same voyage account, but they should be calculated separately.

Deadfreight: Cargo quantity agreed but not supplied.
Demurrage: Time used beyond allowed laytime.
Deadfreight trigger: Short shipment or failure to load full/minimum cargo.
Demurrage trigger: Loading or discharging time exceeds laytime.
Deadfreight measure: Shortfall quantity multiplied by freight/deadfreight rate.
Demurrage measure: Excess time multiplied by demurrage rate.

A voyage may produce both claims. For example, Charterers may fail to supply full cargo and also keep the ship waiting beyond laytime. In that case, Shipowners may claim deadfreight for the missing cargo and demurrage for the excess time, subject to the Charter Party wording and the evidence.

Who Pays Deadfreight?

Deadfreight is normally payable by Charterers because Charterers are the party responsible for providing the cargo under the Voyage Charterparty. If Charterers have promised a minimum quantity, a full cargo, or a quantity declared under an agreed option, failure to provide that cargo may place Charterers in breach.

However, the practical payer may depend on the contractual chain. In some trades, the cargo may be provided by shippers, traders, suppliers, receivers, or sub-charterers. Shipowners’ direct claim is usually against Charterers under the Charter Party, but Charterers may then seek recovery from the party responsible for the cargo shortage under a sale contract, sub-charter, supply contract, or cargo contract.

When is Deadfreight Payable?

Deadfreight is usually payable once the cargo shortfall is established and the voyage freight account is prepared. In many cases, this occurs at or shortly after completion of loading, when the loaded quantity is known. The Charter Party may require freight and deadfreight to be paid before breaking bulk, on signing/releasing Bills of Lading (B/L), after completion of loading, within a stated number of banking days, or at another agreed time.

If the Charter Party contains a freight payment clause, the deadfreight claim should follow that clause unless a separate deadfreight payment mechanism exists. If the clause is unclear, Shipowners should send a prompt written claim with supporting documents and reserve all rights.

Evidence Required for a Deadfreight Claim

A strong deadfreight claim is built on documents. Shipowners should not rely only on a verbal statement that the ship could have loaded more cargo. The claim should be supported by clear evidence showing both the contractual obligation and the factual shortfall.

Useful evidence may include:

Charter Party recap and full Charter Party terms.
Cargo quantity clause and any MOLOO, MOLCO, MOLCHOP, or full cargo wording.
Master’s loadable quantity declaration.
Draft survey reports before and after loading.
Shore scale certificates and terminal loading figures.
Statement of Facts and loading logs.
Mate’s receipts and Bills of Lading (B/L).
Stowage plan and final cargo distribution.
Port draft restrictions, berth restrictions, river restrictions, and tide restrictions.
Load line and stability calculations.
Communications showing that Charterers or shippers could not provide the remaining cargo.
Letter of protest or written reservation of rights.

The better the evidence, the easier it is to distinguish a true deadfreight claim from a dispute over ship intake, safety restrictions, draft limitations, or cargo measurement.

Letter of Protest for Deadfreight

When a cargo shortfall becomes apparent, the Captain (Master) or Shipowners’ agents may issue a Letter of Protest. The purpose is to record that the ship was ready, able, and entitled to load the contractual quantity, but the cargo was not supplied. The protest should be factual, concise, and issued at the correct time.

A practical deadfreight protest may record:

The quantity declared by the Master or required under the Charter Party.
The actual quantity supplied and loaded.
The shortfall quantity.
The fact that the ship had capacity to load the missing quantity, if applicable.
The reason given by shippers, Charterers, terminal, or agents for the shortfall.
Shipowners’ reservation of rights to claim deadfreight and related sums.

The protest should not exaggerate the facts. If draft restrictions or stability restrictions prevented further loading, the protest must reflect that reality. A careless protest can damage the claim rather than protect it.

Can Charterers Avoid Deadfreight?

Charterers may avoid deadfreight if they can show that they supplied the quantity required by the Charter Party, that the alleged shortfall was within their contractual option, that the ship could not safely or legally load more cargo, that the cargo quantity clause did not require a larger cargo, that freight was a genuine lump sum, or that Shipowners failed to mitigate where mitigation was required and possible.

Charterers may also dispute the Master’s declaration if it was not supported by the ship’s actual intake or if the declared quantity ignored known restrictions. For example, if the ship could not load the declared quantity because of berth draft, river draft, air draft, load line zone, cargo stowage factor, stability, or stress limitations, the deadfreight claim may be reduced or defeated.

Shipowners’ Duty to Mitigate Deadfreight Loss

In some cases, Shipowners may be expected to take reasonable steps to reduce the loss if alternative cargo is available and can be loaded without unreasonable delay, risk, deviation, or commercial disadvantage. This does not mean Shipowners must accept every possible substitute cargo. The substitute cargo must be practical, lawful, compatible, and commercially reasonable in the circumstances.

For example, if a compatible additional cargo is immediately available at the same berth and can be loaded without delaying the ship or prejudicing the voyage, Shipowners may need to consider it. If the alternative cargo requires major delay, extra cleaning, a different berth, incompatible stowage, unsafe trimming, or a different destination, Shipowners may have reasonable grounds to refuse.

Common Reasons Deadfreight Disputes Arise

Deadfreight disputes often arise because the parties disagree about the quantity that should have been loaded. The most common reasons include:

Different interpretation of the cargo quantity clause: The parties disagree whether the quantity was a minimum, a range, a full cargo, or an option.
MOLOO or MOLCO misunderstanding: The parties disagree who had the right to declare the final cargo quantity.
Draft restriction dispute: Charterers argue the ship could not safely load the quantity claimed by Shipowners.
Stowage factor dispute: Cargo occupies more space than expected, reducing the ship’s loadable quantity.
Short shipment by shippers: The cargo supplier fails to deliver the planned cargo to the terminal.
Measurement difference: Draft survey, shore scale, and B/L figures do not match exactly.
Port or berth limitation: The loading place imposes restrictions that reduce the cargo intake.
Late declaration: Charterers say the Master’s cargo declaration was late or unclear.
Lump sum freight argument: Charterers say the freight structure excludes deadfreight.
Mitigation argument: Charterers say Shipowners could have loaded substitute cargo.

Deadfreight Calculation Checklist

Before issuing a deadfreight invoice, Shipowners should check:

What exact cargo quantity did the Charter Party require?
Was the quantity fixed, minimum, full cargo, MOLOO, MOLCO, or otherwise optional?
Who had the right to declare the final cargo quantity?
Was the Master’s declaration issued clearly and in time?
Could the ship safely and legally load the declared quantity?
Were draft, air draft, berth, river, canal, seasonal, or load line restrictions considered?
Was the cargo stowage factor correctly applied?
Was the cargo compatible with the ship’s holds, tanks, natural segregation, and equipment?
What quantity was actually loaded?
Which figure controls: draft survey, shore scale, B/L quantity, or Charter Party measurement clause?
What freight rate or deadfreight rate applies?
Does the Charter Party allow deductions, exceptions, or special calculation rules?
Has a protest or reservation of rights been issued?
Are supporting documents attached to the invoice?

Deadfreight Calculation Table

A practical deadfreight table may be arranged as follows:

Item	Quantity / Rate	Result
Contractual cargo quantity	52,000 mtons	Quantity required
Actual cargo loaded	50,000 mtons	Quantity supplied
Shortfall	2,000 mtons	52,000 - 50,000
Freight rate	USD 50 per mton	Agreed freight rate
Deadfreight	2,000 × USD 50	USD 100,000

Sample Deadfreight Clause Wording

A simple deadfreight clause may state:

Charterers shall provide and load the agreed cargo quantity within the range and option stated in this Charter Party. If Charterers fail to supply the quantity properly required or declared under this Charter Party, Charterers shall pay deadfreight on the shortfall at the same rate as freight, unless otherwise agreed. Shipowners shall be entitled to include such deadfreight in the freight invoice and to reserve all rights in respect of any related loss, delay, cost, lien, or claim.

This sample wording is only a commercial illustration. Actual Charter Party wording should be drafted carefully for the trade, cargo, ship type, freight structure, payment terms, lien rights, B/L position, and governing law.

Deadfreight in Voyage Charterparty Practice

In Voyage Charterparty practice, deadfreight is not only a clause but also a commercial risk allocation tool. Shipowners fix the ship expecting to earn freight from a defined cargo quantity. Charterers fix the ship expecting to move a cargo that they control or source from shippers. If Charterers cannot provide the promised cargo, the risk normally falls on Charterers unless the contract places that risk elsewhere.

For Shipowners, deadfreight protects the earning basis of the fixture. For Charterers, deadfreight is a reminder that cargo availability must be secured before committing to a quantity. For shipbrokers, deadfreight wording is one of the important details in the recap because a poorly drafted quantity clause can create a costly dispute at the loading port.

Deadfreight and Cargo Quantity Drafting

The safest way to avoid deadfreight disputes is to draft the cargo quantity clause clearly. The clause should state:

The cargo quantity or quantity range.
The option holder, such as owners’ option or charterers’ option.
The time and method for declaring the final quantity.
Whether freight is payable on intake, B/L quantity, delivered quantity, or another measure.
Whether deadfreight is payable at the freight rate or a separate rate.
Whether minimum cargo supply avoids deadfreight even if the ship can load more.
Whether overage applies and at what rate.
Whether laytime is calculated on cargo loaded or cargo on which freight/deadfreight is paid.
Whether Shipowners have a lien for deadfreight.
Whether deadfreight must be noted, protested, invoiced, or secured before sailing.

Clear drafting prevents many disputes before the ship arrives at the loading port.

Deadfreight Calculation Mistakes

Common mistakes in deadfreight calculations include:

Using the ship’s full deadweight instead of the contractual cargo quantity.
Ignoring port draft restrictions and load line limits.
Ignoring the cargo stowage factor and cubic capacity.
Applying MOLOO when the clause is actually MOLCO.
Claiming deadfreight where the freight is a true lump sum.
Using the wrong freight rate for the shortfall.
Failing to consider overage provisions in tanker fixtures.
Failing to document the Master’s declaration.
Relying only on an oral protest.
Issuing an invoice without supporting calculation documents.

How Charterers Can Reduce Deadfreight Risk

Charterers can reduce deadfreight risk by:

Fixing realistic cargo quantities based on confirmed supply.
Using MOLCO where commercial flexibility is needed.
Agreeing a minimum quantity with an option up to full cargo.
Checking loading port restrictions before fixing.
Confirming cargo stock, quality, availability, and loading readiness.
Understanding the cargo stowage factor and ship cubic limits.
Communicating early if a cargo shortage is likely.
Arranging substitute cargo where possible.
Ensuring sales contracts and supply contracts match the Charter Party obligation.
Reviewing B/L and freight payment wording before loading begins.

How Shipowners Can Protect a Deadfreight Claim

Shipowners can protect a deadfreight claim by:

Drafting a clear cargo quantity and deadfreight clause.
Ensuring the Master’s loadable quantity calculation is accurate.
Declaring the required quantity in writing where required.
Monitoring loading progress closely.
Recording all cargo shortfall communications.
Issuing a timely Letter of Protest.
Preserving draft survey and shore scale documents.
Reserving rights in the Statement of Facts where appropriate.
Checking whether a lien is available and practical.
Preparing a transparent invoice with calculation details.

Deadfreight Calculation Summary

Deadfreight Calculation and Example can be summarized in one sentence: when Charterers fail to supply the cargo quantity they were obliged to load, Shipowners may claim the freight that would have been earned on the missing cargo, subject to the Charter Party wording and the actual loading facts.

The core calculation is simple, but the surrounding legal and commercial analysis can be complex. The parties must identify the contractual cargo obligation, the actual loaded quantity, the applicable freight or deadfreight rate, and the evidence showing that the shortfall was Charterers’ responsibility. In dry bulk chartering, the key issues usually involve MOLOO, MOLCO, full cargo, stowage factor, draft restrictions, and Master’s declaration. In tanker chartering, the key issues usually involve minimum quantity, full cargo option, Worldscale, overage, segregation, B/L quantities, and freight payment wording.

Deadfreight protects Shipowners from losing freight when Charterers under-supply cargo. At the same time, careful drafting protects Charterers from paying for cargo space they never promised to use. A well-written Charter Party, clear cargo nomination, accurate loading records, and prompt communication at the loading port are the best ways to prevent deadfreight disputes.