Why carrier liability is not the same as insurance
One of the most persistent misunderstandings in international transport is the belief that a shipping line, haulier or airline is automatically responsible for the full value of goods if something goes wrong in transit. In reality, carriers operate under statutory or contractual liability regimes that cap compensation at a fixed amount per kilogramme, per package or per unit, regardless of what the cargo is actually worth. These limits were established decades ago under conventions covering sea, road and air transport, and while the figures have been revised periodically, they remain modest when set against the replacement cost of a vehicle, a container of household effects or commercial machinery.
For sea freight, liability under the Hague-Visby Rules is typically calculated at the higher of a per-package figure or a per-kilogramme figure, often in the region of a few hundred special drawing rights, which in practice can translate to only a fraction of an item's true worth. Road haulage under the CMR convention and air freight under the Montreal Convention apply their own weight-based ceilings, again calculated per kilogramme of gross weight rather than declared value. None of these regimes are designed to make a shipper whole after a loss; they exist to limit the carrier's exposure, which is precisely why a separate insurance policy, taken out by or on behalf of the cargo owner, is the only realistic way to protect the commercial or personal value of what is being shipped.
How weight-based limits play out in practice
Consider a family vehicle worth an indicative twenty thousand pounds shipped by sea in a roll-on roll-off vessel. If that vehicle is damaged beyond repair during loading or ocean transit, the carrier's liability under the applicable convention might be calculated using the vehicle's gross weight multiplied by a fixed sum per kilogramme, producing a figure that could be a small fraction of the vehicle's actual value. The shortfall between what the carrier is obliged to pay and what the vehicle was genuinely worth falls entirely on the owner unless a separate marine cargo insurance policy has been arranged to cover that gap.
The same arithmetic applies to household effects moving in a shared or sole-use container, machinery moving as breakbulk cargo, or commercial goods moving by air. A pallet of electronic components with a high value-to-weight ratio is especially exposed, because the per-kilogramme liability limit takes no account of how valuable the contents are relative to how light they might be. Freight forwarders will generally flag this exposure at the quotation stage, but it remains the responsibility of the cargo owner to decide whether to accept the residual risk or to transfer it through a dedicated policy, and in our experience the overwhelming majority of shippers choose the latter once the numbers are explained clearly.
The Institute Cargo Clauses framework
Most marine cargo insurance policies written in the London market and by insurers following London wording are based on the Institute Cargo Clauses, commonly referred to as ICC A, B and C. These clauses set out, in a standardised way, what perils are covered, what is excluded, and how claims are to be handled, giving both insurers and cargo owners a common reference point regardless of which underwriter ultimately provides the cover. Understanding the practical difference between the three tiers is essential before deciding which level of protection to buy, because the price difference between them is often modest relative to the difference in the scope of cover provided.
ICC C is the narrowest form of cover, responding only to a defined list of major casualties such as fire, explosion, vessel stranding or sinking, collision, and general average sacrifice. It does not cover ordinary handling damage, theft, or water ingress from causes outside that list, which makes it a poor fit for high-value personal effects or vehicles where the more common risks are scuffing, denting, pilferage or accidental wetting rather than a vessel actually sinking. ICC B extends the list of covered perils to include earthquake, volcanic eruption, lightning, washing overboard, and entry of sea, lake or river water into the vessel or container, offering a middle tier that suits certain bulk and packaged cargo but still leaves gaps around handling and theft.
All-risks cover under Institute Cargo Clauses A
ICC A, generally referred to as all-risks cover, is the broadest of the three standard tiers and is the policy most freight forwarders recommend for vehicles, personal effects and high-value commercial cargo. Rather than listing specific perils that are covered, it insures against all risks of physical loss or damage to the subject matter insured, except for a defined list of exclusions common to all three clause sets. This structure shifts the burden of proof: under ICC A the insured only needs to show that loss or damage occurred during the period of cover, whereas under B or C they must also demonstrate that the cause falls within the specific list of insured perils, which can be a significant practical hurdle when the exact cause of damage is unclear.
In everyday terms, all-risks cover responds to scenarios that are common in real shipments but excluded from the narrower tiers, including accidental damage from careless handling during loading and discharge, theft of parts or entire items, water damage from condensation or rain during storage, and breakage of fragile items packed within a container. It does not, however, mean cover for absolutely everything; the word all-risks describes the breadth of the insured perils, not an absence of exclusions, and the standard exclusion clauses still apply in full regardless of which tier is chosen. Anyone assuming all-risks means unconditional cover for every possible eventuality should read the exclusions carefully before relying on the policy.
Declared value and how sums insured are calculated
A marine cargo policy pays out based on the sum insured that has been declared and agreed at the outset, not on a retrospective assessment of sentimental or replacement value after a loss has occurred. For vehicles this is usually based on an agreed market value or invoice price, sometimes uplifted by a percentage to cover shipping costs and duties so that the insured is not left short if the vehicle is a total loss. For household effects, the sum insured is normally based on a valued inventory prepared by the owner, itemising contents room by room with an estimated replacement cost for each category, and this document becomes central both to setting the premium and to substantiating any subsequent claim.
Under-declaring value to save on premium is a false economy, because most policies include an average clause, meaning that if the sum insured is found to be lower than the true value of the goods at the time of loss, any claim payment is reduced proportionately. A shipment insured for half its true value will typically only be paid half of any claim, even for a partial loss, so accuracy at the declaration stage protects the insured far more effectively than a slightly cheaper premium. Conversely, over-declaring does not increase what can be recovered beyond the actual loss suffered, since marine insurance is a contract of indemnity rather than a wager, so the sensible approach is always an honest, well-supported valuation.
Standard exclusions that catch shippers out
Every Institute Cargo Clause, including the all-risks A wording, carries a set of exclusions that apply regardless of the tier purchased, and these are worth understanding before goods are shipped rather than after a claim is declined. Common exclusions include loss or damage caused by wilful misconduct of the insured, ordinary leakage or wear and tear, inadequate or unsuitable packing carried out by the insured or their agents, inherent vice or nature of the goods themselves, and delay, even where the delay is caused by an insured peril. War and strikes are also excluded from the standard clauses, although separate Institute War Clauses and Institute Strikes Clauses can be added for an additional premium on higher-risk routes.
Mechanical or electrical derangement not caused by an external insured peril is another frequent point of confusion, particularly for vehicle shipments; a pre-existing fault in an engine or electrical system that simply manifests during the voyage is not the same as damage caused by the voyage itself, and insurers will often require evidence distinguishing the two. Similarly, scratches, dents or wear consistent with the age and condition of a used vehicle, rather than a discrete incident in transit, are unlikely to be treated as an insured loss. Reading the policy wording and asking the freight desk to clarify any ambiguous exclusion before shipment is far cheaper than discovering the gap at claims stage.
Packing warranties and their effect on cover
Marine cargo policies frequently include a packing warranty, requiring that goods be packed in a manner adequate to withstand the ordinary rigours of the intended voyage, including handling, stacking, vibration, temperature variation and the motion of a vessel at sea. This is not a formality; insurers can and do decline claims, or reduce settlements, where inadequate packing is found to have caused or contributed to the loss, and inadequate packing is one of the exclusions carried across all three Institute Cargo Clause tiers rather than something that can be underwritten around at additional cost. For household effects this generally means using proper removal cartons, appropriate wrapping and cushioning materials, and professional loading rather than makeshift arrangements.
For vehicles, packing warranty compliance usually translates into requirements around drained or reduced fuel levels, disconnected batteries where appropriate, secure wheel chocking and strapping within the container or on the vessel deck, and protection of exposed trim and glass from rubbing against securing straps or adjacent cargo. Professional loading photographs and method statements are increasingly requested by insurers as supporting evidence that the packing warranty was satisfied, and our freight desk routinely provides these records as a matter of course so that, in the rare event of a claim, there is no ambiguity about how the vehicle or consignment was prepared and secured before departure.
Pre-shipment surveys and condition reports
For higher-value cargo, and particularly for used vehicles, machinery and classic or collector items, an independent pre-shipment survey and condition report provides an objective record of the item's state before it enters the transport chain. This typically involves a qualified surveyor or an experienced member of the loading team photographing the item from multiple angles, noting existing damage, testing mechanical function where relevant, and recording odometer readings or serial numbers, all of which becomes the baseline against which any post-voyage damage is measured. Without such a record, insurers and carriers alike are entitled to query whether damage noted on arrival was actually present, unrecorded, before the goods were ever loaded.
A thorough condition report should be detailed enough to withstand scrutiny weeks or months later, since claims are not always raised the moment a container is opened, especially where damage is not immediately obvious or where destination unpacking is delayed. Dated, time-stamped photographs, a written schedule of existing marks or defects, and where relevant an independent surveyor's signature all strengthen the evidential position considerably. We recommend commissioning a survey for any shipment where the declared value is significant relative to the cost of the survey itself, since the modest fee is generally trivial compared with the difficulty of substantiating a claim without one.
Notifying insurers and the mechanics of a claim
When loss or damage is discovered, either during transit, on discharge, or on unpacking at destination, the first practical step is to notify the insurer or their appointed claims agent as soon as possible, since most policies impose time limits for notification and for the submission of supporting documentation. Where damage is visible on delivery, it should be noted clearly on the delivery receipt or proof of delivery document before it is signed, because an unqualified signature confirming goods received in good condition can materially weaken a subsequent claim even where damage is later found to be more extensive than first apparent.
A typical claims file will include the original policy or certificate of insurance, the bill of lading or air waybill, the commercial invoice or valuation supporting the sum insured, photographs of the damage, the delivery documentation noting any exceptions, and, for larger claims, an independent surveyor's report assessing the cause and extent of the loss. Insurers will usually appoint their own surveyor for claims above a certain threshold, and cooperating fully with that inspection, including preserving damaged packaging and not disposing of the item until the survey is complete, is essential. Our freight desk can guide clients through this process and liaise directly with insurers where required.
General average and why it applies even without fault
General average is a principle of maritime law, older than any modern insurance market, under which all parties with cargo aboard a vessel share proportionately in any loss incurred when a voluntary sacrifice is made, or extraordinary expenditure is incurred, for the common safety of the ship and all cargo on board. A classic example is jettisoning containers to save a vessel in distress, or incurring salvage costs after a grounding, but the principle can also be triggered by fire-fighting water damage, towage costs, or emergency port diversions, and it applies regardless of whether the shipper's own cargo was damaged or even involved in the incident that caused the sacrifice.
When general average is declared, typically by the vessel's owners following a qualifying incident, every cargo interest on board, whether their own containers were affected or not, becomes liable to contribute a proportionate share of the total loss, calculated according to the value of their cargo relative to the whole. Carriers will usually require a general average bond and, if the cargo is insured, a guarantee from insurers before releasing goods, which can delay delivery by weeks or months while adjusters calculate contributions. This is one of the strongest practical arguments for holding marine cargo insurance even on cargo that seems inherently low risk, since a general average contribution can arise entirely independently of anything happening to the insured goods themselves.
Deductibles, excess levels and how they affect premium
Most marine cargo policies apply a deductible, sometimes called an excess, representing the first portion of any claim that the insured bears themselves before the insurer's payment begins. Choosing a higher deductible generally reduces the premium, which can be a sensible trade-off for cargo owners confident in their packing and handling arrangements, while a lower or nil deductible increases the premium but removes the uncertainty of a shortfall on smaller claims. For vehicle shipments, deductibles are often expressed as a fixed indicative sum per vehicle, whereas for household effects and commercial cargo they may be expressed as a percentage of the sum insured or claim value, sometimes subject to a minimum figure.
It is worth checking whether the deductible applies per incident, per container, or per policy period, since this can materially affect the practical value of cover where multiple items are damaged in a single event. A shipment of several vehicles in one consignment might, depending on wording, be subject to a single deductible for the whole event or a separate deductible applied to each vehicle individually, and the difference between these two structures can be substantial when several items are damaged together. Asking for this detail in writing before binding cover avoids any unwelcome surprise at claims stage.
Choosing the right level of cover for different cargo types
The right level of cover depends heavily on what is being shipped, the route, and the owner's appetite for risk. Vehicles, particularly used or classic vehicles with values that are difficult to replace precisely, generally warrant ICC A all-risks cover given how exposed they are to handling damage, theft of components, and cosmetic harm that would not be covered under the narrower B or C tiers. Household effects moving as part of an international relocation are similarly best protected under all-risks cover, since the mix of fragile, sentimental and difficult-to-value items makes the broader wording considerably more useful in practice than the cost saving of a narrower policy.
For bulk commodities or robust industrial cargo with low susceptibility to handling damage, a narrower tier such as ICC B or C may represent reasonable value, particularly where the cargo owner has strong internal risk management and can absorb minor losses without insurance. There is no single correct answer, and the decision should be made with a clear understanding of what each tier actually covers rather than on price alone; our freight desk can talk through the specific characteristics of a shipment and help identify which level of cover is proportionate to the risk involved.
Speak to our freight desk before you ship
Marine cargo insurance is one of those areas where a small amount of preparation before a shipment departs makes an enormous practical difference if something does go wrong once it is underway. Understanding the difference between carrier liability and genuine insurance, choosing the appropriate Institute Cargo Clause tier, declaring an accurate value, satisfying packing warranties, and keeping a proper condition record are all straightforward steps that cost little in time or money compared with the protection they provide. Every shipment is different, and the right combination of these elements depends on the cargo, the route and the owner's own appetite for risk.
If you are planning to ship a vehicle, a container of household effects, or commercial cargo and would like a clear written quote setting out the available cover options, deductibles and indicative premiums, please get in touch with our freight desk. We are happy to talk through the practical detail of Institute Cargo Clauses A, B and C, help prepare a valued inventory or condition report, and make sure the cover in place genuinely matches the value and nature of what you are sending, rather than leaving you exposed to a weight-based liability limit that was never designed to reflect what your goods are actually worth.
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