Why does an undamaged cargo owner have to pay for someone else’s loss?
An interactive walkthrough of General Average — the maritime law principle where everyone on a voyage shares the cost of a sacrifice made to save them all. Adapted from a training session by NAU’s Jagan.
One casualty. One common adventure. One shared loss.
Picture a ship carrying cargo for three different owners. A fire breaks out. To save the ship and the rest of the cargo, the crew jettisons one owner’s containers overboard. That owner’s cargo is gone — but it was sacrificed for everyone’s benefit. General Average says: everyone who benefited shares the loss.
Every party in the adventure faced the same peril, not just the one whose property was sacrificed.
The sacrifice was made deliberately, for the common safety — not by accident or negligence.
Everyone whose property was saved contributes toward the value of what was sacrificed.
A loss only qualifies as General Average if it meets every one of these
Click each requirement below — all five must be satisfied, not just some of them.
The master or crew must deliberately choose to make the sacrifice or incur the expense. Accidental damage — a container that simply falls overboard in a storm — does not qualify.
The ship and cargo must be facing an actual, serious danger — not a remote or imagined one — that threatens the whole adventure, not just one interest.
Ship, cargo, and any other contributing interests must be engaged in the same voyage, exposed to the same fate together.
The sacrifice or expense must go beyond what would ordinarily be expected in the course of the voyage — not routine wear, fuel, or expected costs.
Both the decision to act and the way it was carried out must be reasonable in the circumstances — not reckless, excessive, or disproportionate to the danger.
General Average vs Particular Average
Not every loss at sea is shared. Most cargo damage is simply bad luck that falls on whoever owned that cargo.
- A sacrifice or expense deliberately incurred for the common safety of the whole adventure
- Shared proportionally by every contributing interest that benefited
- Continues while there is a common benefit to completing the voyage
- A loss falling on one particular interest, not shared by the others
- Not a General Average act — no deliberate common-safety decision was made
- Ends when the property reaches a position of safety
Common law, statute — and contract
The same idea shows up in two independent sources, and it’s worth noticing the wording is nearly identical.
“There is a general average act where any extraordinary sacrifice or expenditure is voluntarily and reasonably made or incurred in time of peril for the purpose of preserving the property imperilled in the common maritime adventure.”
“There is a general average act when, and only when, any extraordinary sacrifice or expenditure is intentionally and reasonably made or incurred for the common safety for the purpose of preserving from peril the property involved in a common maritime adventure.”
In practice, most General Average today is governed by whichever edition of the York-Antwerp Rules is incorporated into the bill of lading or charterparty — not by the statute directly.
Rhodian Law — developed by the Romans, the earliest known root of the principle
Similar ideas also appear in Indus Valley, Egyptian, and Chinese trading practice?
York-Antwerp Rules first codified, revised roughly every few decades since
The York-Antwerp Rules
A widely used contractual framework, often incorporated into bills of lading and charterparties. It governs both what counts as an allowable sacrifice or expense, and how contributions are valued and calculated. The precise edition and incorporation wording must always be checked — the contract’s terms decide which edition applies, as we explored in The Star Antares – YAR 1994 or 2016?
Establishes the primacy of the Numbered Rules over the Lettered Rules where they conflict.
Introduced from the 1994 edition onward — an overriding requirement of reasonableness.
Set out the general principles — what qualifies as General Average and how it’s adjusted.
Cover specific categories of loss and expense — contents vary between editions.
Worked example: calculating a General Average contribution
Change any figure below and the calculation updates live. The defaults match a simplified textbook scenario: a ship worth $10m, three cargo interests, and a $2m sacrifice made to save the voyage.
General Average calculator
Cargo B was the sacrificed interest — its value below is what it would have been worth had it not been sacrificed.
| Interest | Contributory value | Contribution at GA rate |
|---|
Rule D: fault doesn’t automatically block contribution
“Rights to contribution in general average shall not be affected, though the event which gave rise to the sacrifice or expenditure may have been due to the fault of one of the parties to the adventure; but this shall not prejudice any remedies or defences which may be open against or to that party in respect of such fault.”
In plain terms: even if the casualty was someone’s fault, GA contribution can still be claimed in the first instance — the innocent party’s right to later raise that fault as a defence is preserved separately, not lost. For a fuller treatment of how this defence plays out in practice, see our article on the General Average and the Rule D Defence.
Typically one year, on a Hague/Hague-Visby Rules basis.
Starts counting from the date the adjustment is provided — not from the casualty itself, so it’s best to investigate immediately rather than wait for the contribution demand.
Why cargo may need to provide security
After a casualty, the shipowner may seek security before releasing cargo — common forms are a GA bond and/or an insurer’s guarantee. Security is not the same thing as the final GA contribution; it simply secures the cargo interest’s eventual liability while the adjustment is prepared.
YAR 1994, Rule XXI — the standard interest rate applied under the older edition.
12-month rate plus 4 percentage points — though ICE LIBOR itself was suspended from 2024, which raises its own practical questions.
Law and jurisdiction can come from more than one place
The contract of carriage and the average bond can each specify different governing law — and they don’t always agree.
“General average to be adjusted in any currency at any place selected by Carrier and according to the York-Antwerp Rules 1994.”
“…any claim, dispute, suit or proceeding arising under this Bill of Lading…shall be governed by German law and shall be determined exclusively in the Hamburg courts. Carrier shall have the option to file a suit at Merchant’s place of business.”
Provides for law and jurisdiction in Box 4 — and this will override the contract of carriage’s law and jurisdiction clause, if the parties have agreed to it.
Case study: the emergency tow
- A vessel loses propulsion near a rocky coast.
- A tug is engaged at an extraordinary cost.
- The master accepts the tow and the vessel reaches safety.
- The cargo is not physically damaged.
Click each question to reveal how it applies to the five requirements covered earlier.
Have a General Average question on an active claim?
NAU is available 24 hours to discuss casualties, security demands, and adjustment disputes.
Email jagan@nau.com.sg
