Ocean Freight Insurance: What It Covers and Why Carrier Liability Is Not Enough

What does ocean freight insurance cover?

Marine cargo insurance is a property policy on the goods themselves, not on the carrier's conduct. It responds when cargo is physically lost or damaged between the point where cover attaches and the point where it ends, which on a properly written policy is warehouse to warehouse rather than port to port.

Broad cover typically responds to:

• Vessel casualty: sinking, stranding, grounding, collision, fire, and explosion.
• Heavy weather and water damage: seawater or rainwater ingress, container breach, cargo shifting in a rolling sea.
• Handling damage: crushed or dropped cargo during loading, discharge, transloading, or drayage.
• Theft, pilferage, and non delivery of a whole container or of specific packages inside it.
• Jettison and washing overboard, including boxes lost from a deck stow.
• General average and salvage contributions, which is the exposure most importers have never heard of.
• The inland legs at both ends, when the certificate is written warehouse to warehouse rather than terminal to terminal.

Those last two are where the money hides. Everything else on the list is what people picture when they think about insurance. General average and the inland legs are the parts importers assume belong to somebody else's policy. They usually do not. For how the shipment itself is organized around this, see what freight forwarding is and our international freight services.

Why carrier liability is not insurance

This is the single most expensive misunderstanding in international shipping. An ocean carrier does accept a degree of responsibility for your cargo, set by the bill of lading contract and by whichever international convention applies to the lane. But that responsibility is built to limit the carrier's exposure, not to make you whole. Four structural features explain why.

1. It is capped, and not by the value of your goods. The limit is calculated per package or per kilogram, whichever the applicable rules produce. For dense or high value cargo, that calculation can land far below what the container is actually worth. Do not guess your number. Ask your forwarder which convention your bill of lading is subject to and confirm the current limitation for that lane in writing.
2. It pays on blame, not on loss. Insurance asks whether the goods were damaged. Liability asks whether the carrier caused it. The burden of proving fault sits with you, and you were not on the vessel.
3. The defense list is long. Perils of the sea, act of God, insufficiency of packing, inherent vice, and in ocean carriage the error in navigation or management defense all reduce or remove liability. A large share of real world losses lands inside one of them.
4. Time bars are short and recovery is slow. Claims against carriers must be notified and filed inside a tight contractual window, and settlement can take years. A cargo policy pays you and then chases the carrier itself.

Carrier liability vs cargo insurance

All risks vs named perils: the clause tiers

Marine cargo cover is normally written on one of three standard clause tiers. Market names vary, but the structure is consistent from broadest to narrowest:

• Broadest, usually marketed as "all risks": responds to physical loss or damage from any external cause that is not specifically excluded. The burden sits with the insurer to show an exclusion applies. This is the normal choice for containerized consumer goods.
• Middle tier, named perils plus: covers a defined list that includes the major casualties plus additional perils such as water damage and washing overboard. Anything not on the list is not covered.
• Narrowest, major casualty only: fire, explosion, vessel sinking or stranding, collision, general average, and salvage. It does not respond to ordinary handling damage, water damage, or theft. Cheap, and usually a false economy for finished goods.

Two things to understand about the word "all risks". First, it does not mean all losses. It means all fortuitous external causes, minus a written exclusion list. Second, a line on a booking confirmation saying the shipment is insured tells you nothing about which tier you bought. Ask for the certificate and the clause set before the vessel sails, and read the exclusions, not the summary.

What ocean freight insurance does not cover

• Inherent vice: the goods damaging themselves. Chocolate melting, produce ripening, metal oxidizing, adhesives curing, batteries degrading.
• Insufficient or unsuitable packing: cartons too weak for a stacked container, no bracing, no dunnage between pallets. This is the exclusion that catches the most first time importers, and it is entirely inside your control.
• Ordinary leakage, ordinary loss in weight or volume, and ordinary wear and tear.
• Delay, even when the delay is caused by an insured peril. Missing a season because the vessel was held is a commercial loss, not a physical one.
• Loss of market, lost profit, and consequential damages, including the storage, rebooking, and expedite costs a delay creates.
• War, strikes, riots, and civil commotion, unless you buy the war and strikes extensions. On some lanes and at some moments those extensions are not really optional.
• Reefer machinery breakdown, unless a temperature clause is specifically added for refrigerated cargo.
• Insolvency or financial default of the carrier, and any loss caused by deliberate misdeclaration or unlawful trade.

General average: the bill nobody expects

General average is a rule of maritime law older than the insurance market. If the master deliberately sacrifices property or incurs extraordinary expense to save the voyage, for example jettisoning containers to refloat a grounded ship, flooding a hold to fight a fire, or hiring professional salvors, the loss is shared by everyone with an interest in the venture. The shipowner and every single cargo owner contributes in proportion to the value of what they had on board.

Two consequences catch importers completely off guard:

1. Your goods do not have to be damaged. Your container can come off the ship in perfect condition and you still owe a contribution to the sacrifice that saved it.
2. Your cargo is held until you post security. Once general average is declared, the carrier has a lien on all cargo. An average adjuster is appointed and every consignee is asked for a general average bond plus financial security before their container is released. If you are insured, your underwriter issues a guarantee and the box moves. If you are not, you post a cash deposit yourself, sized as a percentage of your cargo value set by the adjuster, and you wait, sometimes for years, while the adjustment is finalized.

This is the strongest single argument for insuring containerized freight. A vessel fire is unlikely on any given sailing, but when one happens it reaches every box on the ship, and the cash call arrives while your goods sit at anchor.

How the insured value is calculated

Standard market practice is to insure the commercial invoice value of the goods, plus the freight you paid, plus a margin. The margin exists because a lost container costs you more than the factory price: there is duty you already paid or still owe, the survey and administration of the claim, and the profit on goods that never arrived. The Incoterms rules set a minimum of 110 percent of the contract value for the cover a seller must arrange under CIF and CIP, and that convention is widely used as the default even when the buyer is the one placing the policy.

• Declare the real value. Underinsurance is normally penalized proportionally, so a shipment declared at half its worth can recover roughly half of a partial loss.
• Include freight and duty in the sum insured. You do not get those back when the container burns.
• Use an open cover if you ship regularly. One policy automatically insures every shipment you declare in the period, which removes the risk of forgetting to insure the one container that matters.
• Confirm where cover attaches and ends. Warehouse to warehouse is the wording you want. Some certificates quietly stop at the destination port, which leaves the drayage leg naked.
• Check the deductible and any per conveyance limit, particularly if you consolidate several suppliers into one container.

Premiums are quoted as a rate on the insured value and vary by commodity, packing, lane, vessel, and loss history, so there is no useful published number. Get a current quote for your commodity and lane alongside your freight forwarding costs and compare the two together.

How to file a cargo insurance claim

1. Do not sign a clean delivery receipt. Note the damage, shortage, or seal discrepancy on the proof of delivery and the equipment interchange documents at the moment of delivery. A clean receipt is the most common reason a valid claim gets reduced.
2. Photograph before you unload. The seal and container number, the door view of the load as stowed, the damage in place, the packaging, then the goods. Timestamps matter.
3. Notify the insurer or the claims agent named on the certificate immediately. Most certificates name a survey agent at destination. Let them appoint a surveyor before you dispose of, repack, or sell anything.
4. Mitigate the loss. You have a duty to prevent further damage: get wet cartons out of the container, separate salvageable stock, keep the damaged goods available for inspection.
5. Put the carrier on notice in writing inside the contractual time limit, even though you are claiming on your policy. Your insurer will pursue the carrier by subrogation and needs those rights preserved.
6. Assemble the file: insurance certificate or policy, commercial invoice, packing list, bill of lading, the annotated delivery receipt, the survey report, photographs, your written claim on the carrier and its reply, and a costed repair or replacement calculation.

Notification deadlines vary by policy and by lane, and they are shorter than people assume. Read the notice period on your certificate the day the shipment books, not the day the damage lands on your dock.

Is cargo insurance worth it?

Judge it on the downside, not the average. Most containers arrive fine, which is exactly why the question feels optional. The real question is whether one total loss would be survivable. For a brand where a single container is a season of a top selling SKU, it is not.

Cargo insurance is clearly worth it when:

• A single container represents a meaningful share of your working capital or your entire cover for a launch window.
• Your cargo has high value per kilogram or per cubic meter, which is where a weight based liability cap is furthest from real value.
• You are buying on CIF or CIP terms, where the seller only has to provide minimum cover that may be narrower than you want and is placed with an insurer you did not choose.
• You are replenishing Amazon FBA from China or another marketplace where a stockout costs you ranking as well as revenue.
• Your routing passes through a region with meaningful war, strike, or diversion exposure.

Self insuring is defensible for small sample shipments, low value per kilogram goods, and importers running enough volume that occasional losses are absorbable. Even then, general average does not scale down with your cargo value, so most operators keep at least that exposure insured. For domestic parcels the calculation is different and much smaller: see shipping insurance for that side of it, and shipping from China to the USA for how the whole lane fits together.

How RitePrep handles this

RitePrep coordinates international freight through our partner Eleevate Logistics, and cargo insurance is treated as a deliberate decision on every shipment rather than something assumed to exist. We are not an insurance broker and do not place cover ourselves, so your underwriter or forwarder writes the certificate. What we do is make sure the question gets asked before the vessel sails. When a container arrives at our own Austin, Texas warehouse, we receive it, count and inspect against the packing list, and document any shortage, water damage, or crushed cartons while the claim window is still open, which is often the difference between a paid claim and a disputed one. From there the same stock flows into warehousing and storage, Amazon FBA prep, and daily pick and pack. If you want the freight and the fulfillment quoted together, tell us the commodity, the lane, and the value per container, and we will come back with current numbers rather than estimates.