The Answer in 60 Seconds

Something went wrong at sea. A fire in the hold, a grounding in the Strait, an engine failure, a collision. To save the voyage, the master jettisoned cargo, flooded a hold to fight the fire, or hired salvage tugs, and the shipowner has now declared General Average (GA). GA is an old maritime-law principle, codified in section 66 of the Marine Insurance Act 1906: where an extraordinary sacrifice or expenditure is voluntarily and reasonably made in a time of peril to preserve the property in the common adventure, every party with property aboard contributes rateably to the loss. Your container can be bone dry and untouched and you still owe a share.

The part that catches Singapore importers cold: the shipowner has a lien over all the cargo and will not release any of it until each cargo owner posts security. An uninsured importer faces a cash demand, a GA deposit that can run to a meaningful percentage of the cargo's value, before the goods move. An importer who bought marine cargo cover has it the easy way: every standard Institute Cargo Clauses wording (A, B and C) covers GA contribution, and section 73 of the MIA makes the insurer liable for the proportion that falls on the insured cargo. The insurer or broker issues a GA guarantee that stands in place of your cash, the goods are released, and the deposit never leaves your account.

So the first 72 hours are about three things: find the appointed average adjuster, get your insurer or broker to issue the GA guarantee and Average Bond, and secure release. Below is how each works.

The Sourced Detail

General Average is not an insurance product and it is not a claim against your policy in the ordinary sense. It is a rule of general maritime law that predates marine insurance by centuries. Understanding that distinction is what stops an importer from making the wrong call in the first day.

What General Average actually is

Section 66(2) of the Marine Insurance Act 1906 defines a general average act as one 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 adventure." Section 66(1) makes clear the loss includes both a general average expenditure (salvage hire, port-of-refuge costs, tug fees) and a general average sacrifice (cargo deliberately thrown overboard, a hold flooded to extinguish a fire).

The logic is one of shared fortune. A ship, its fuel, the freight, and the cargo of dozens of unrelated owners are all on one voyage. If the master spends money or sacrifices some property to save the whole, the law treats that as a cost of the common venture, not a private misfortune of whoever happened to own the jettisoned box. So section 66(3) gives the party on whom the loss falls a right to "a rateable contribution from the other parties interested," called a general average contribution.

In practice the contribution is calculated under the York-Antwerp Rules, a set of internationally agreed adjustment rules first drawn up in the 19th century and periodically revised. The York-Antwerp Rules are not a statute. They are a private, contractual code, incorporated into the voyage by a clause in the bill of lading or charterparty. Almost every commercial bill of lading used on routes through Singapore incorporates a stated edition (commonly the 1994, 2004 or 2016 Rules). The MIA supplies the statutory backbone in Singapore; the York-Antwerp Rules supply the detailed arithmetic of who pays what. Both matter, and they sit side by side.

Why your undamaged cargo is held

This is the mechanic that surprises people. The shipowner is entitled, under general maritime law, to a possessory lien over cargo to secure each owner's GA contribution. The shipowner will not surrender your goods until you have provided acceptable security for your share. Your cargo's own condition is irrelevant. A pristine container of electronics that took no water and no fire still carried its proportion of the saved value, so it still owes its proportion of the GA loss.

The shipowner, or more usually the appointed average adjuster, will demand two things before release:

  • A GA deposit, a cash sum, or in its place an acceptable GA guarantee from an insurer; and
  • A signed Average Bond (often a Lloyd's Average Bond), the contract by which the cargo owner agrees to pay whatever contribution the adjustment eventually fixes.

The deposit is provisional. The final figure is set only when the adjustment is complete, which on a serious casualty can take months or years. A cash deposit ties up that money for the entire period.

How marine cargo insurance responds

If your cargo is insured, GA contribution is one of the things the policy is built to absorb. The standard Institute Cargo Clauses, ICC (A), ICC (B) and ICC (C), each contain a General Average clause covering "general average and salvage charges, adjusted or determined according to the contract of carriage and/or the governing law and practice." This is true even of the most restrictive form, ICC (C), which otherwise covers only a short list of named perils. The differences between the three clause sets are covered in our note on choosing between ICC A, B and C; on GA contribution specifically, all three respond.

The statutory mechanism sits in section 73 of the MIA, which deals with general average contributions, read with section 66(4) and (5). Where the assured has paid, or is liable to pay, a general average contribution in respect of the insured subject-matter, the assured may recover it from the insurer, subject to any express provision in the policy. The effect for the importer is direct: the insurer steps into the GA obligation. Rather than make you find cash, the insurer (through your broker) issues a GA guarantee to the average adjuster, undertaking to pay your eventual contribution. The adjuster accepts the guarantee in place of a deposit, and the cargo is released.

One condition runs through the MIA and the clauses: the loss must connect to a peril the policy was meant to cover. Section 66(6) provides that, absent express stipulation, the insurer is not liable for a GA loss "where the loss was not incurred for the purpose of avoiding, or in connection with the avoidance of, a peril insured against." A GA act prompted by an insured peril such as fire or stranding is squarely within cover.

The first 72 hours: the workflow

The casualty itself is the shipowner's problem. Your task is narrow and time-pressured: secure your goods' release without parting with cash you do not need to part with.

Hour 0 to 24. Confirm the declaration and find the adjuster. You will usually learn of GA from your freight forwarder, the carrier's notice, or a demand letter from an average adjuster. Confirm three facts: that GA has been formally declared, the identity of the appointed average adjuster (the firm calculating contributions), and the security the adjuster requires. Pull your bill of lading and read the General Average clause to see which edition of the York-Antwerp Rules governs.

Hour 0 to 24. Notify your insurer or broker. This is the single most important early move. The insurer or broker, not you, deals with the adjuster. Send them the GA declaration, the adjuster's demand, the bill of lading, and your commercial invoice and packing list establishing the cargo's insured value. If your cargo is on an annual open cover rather than a single voyage policy, the declaration mechanics matter; see annual open cover versus specific voyage marine cargo.

Hour 24 to 48. The insurer issues the GA guarantee. Your broker arranges for the insurer to issue a GA guarantee to the adjuster and for you (or the insurer) to complete the Average Bond. The guarantee replaces the cash deposit. Where an importer has no marine cargo cover, this is the moment the gap bites: there is no insurer to stand behind a guarantee, so the importer must wire a cash deposit or arrange a bank guarantee to free the goods.

Hour 48 to 72. Secure release and preserve the file. Once the adjuster confirms the security is acceptable, the carrier authorises release. Keep every document: the GA declaration, the Average Bond, the guarantee, the bill of lading, invoices, and all correspondence. The final adjustment can take a year or more, and the insurer will need a complete file to settle your eventual contribution and pursue any recovery.

Common Mistakes

  1. Assuming undamaged cargo is exempt. GA contribution is owed by all saved property regardless of its condition. A clean container is still liened until security is posted.

  2. Paying a cash deposit when cargo is insured. An insured importer who pays the GA deposit out of pocket has tied up money the insurer would have guaranteed. Notify the insurer first and let them issue the guarantee.

  3. Treating GA as a normal damage claim. GA is a contribution to a shared loss, triggered by the master's declaration, not by damage to your own goods. The documents and the timeline are different, and the adjuster, not the carrier's claims desk, drives the process.

  4. Signing the Average Bond without reading the governing York-Antwerp edition. Different editions allocate certain costs differently. The bill of lading states which edition applies; confirm it before signing.

  5. Letting the deposit sit when a guarantee was available. Even where a cash deposit was posted in haste, the importer or insurer can often substitute an insurer guarantee and recover the cash. Acting late leaves money locked up for the years an adjustment can run.

  6. Shipping without GA cover at all. Carriage on standard bills of lading exposes every cargo owner to GA. An importer moving goods with no marine cargo policy is exposed to a cash demand on a casualty it had no part in causing.

What This Means for Your Business

If you import into Singapore on ordinary commercial bills of lading, General Average is a risk you carry on every voyage whether or not you ever think about it. The exposure is not theoretical: container-ship fires and groundings happen, and when they do, GA is declared and the lien follows.

The structural protection is straightforward. Marine cargo cover on Institute Cargo Clauses terms (A, B or C) includes GA contribution, so the insurer absorbs your share and issues the guarantee that frees your goods. That single feature converts a sudden cash demand into a routine notification to your broker. The mechanics of bringing a marine cargo claim, including a GA scenario, are set out in our step-by-step ICC claim walkthrough.

If GA has just been declared on a voyage carrying your goods, the order of operations is fixed: confirm the declaration and the appointed adjuster, notify your insurer or broker before you respond to any cash demand, let them issue the GA guarantee and complete the Average Bond, secure release against that security, and preserve the full document file for the adjustment to come.

If you are uninsured, the same casualty becomes a financing problem. You will need to fund a cash deposit or a bank guarantee to free your cargo, with no recovery against an insurer, and you will carry the contribution alone once the adjustment finalises.

Questions to Ask Your Adviser

  1. Does our marine cargo cover include general average and salvage charges, and on which Institute Cargo Clauses form (A, B or C)?
  2. If GA is declared, who issues the GA guarantee to the adjuster, the insurer or the broker, and how quickly can it be produced?
  3. Is our cargo insured to its full value, so that the GA contribution proportion is fully met rather than averaged down for under-insurance under section 81 of the MIA?
  4. On an annual open cover, is every voyage properly declared so that GA cover actually attaches to this shipment?
  5. Who do we call first, in-house or at the broker, in the first 24 hours of a GA declaration, and is that contact current?

Related Information

Published 31 May 2026. Source verified 31 May 2026. COVA is an introducer under MAS Notice FAA-N02. We do not recommend insurance products. We provide factual information sourced from primary regulators and route you to a licensed IFA who can match a policy to your specific situation.