Marine cargo insurance: clause sets, attachment and the sea-specific risks

Three tiers of cover, not one product

The market has long organised marine cargo cover into a broad set and two more restricted sets. The broad wording insures loss or damage from any fortuitous cause except what is expressly excluded. The restricted wordings work the other way: they list the perils insured, typically major casualty events such as fire, explosion, stranding, sinking, collision, general average sacrifice and jettison, with the middle tier adding further named causes including entry of water into the hold or container. Commodity type usually decides which tier is realistic. Bulk cargoes and low-value goods that suffer routine handling losses are frequently written on a restricted basis, while manufactured goods and anything fragile or high-value is normally placed on the broad wording. Trying to insure a claims-prone commodity on the broad basis at a restricted price is the fastest route to a wording nobody is happy with.

When the transit clause switches cover on and off

Marine cover does not follow ownership; it follows a described journey. The standard transit provision starts when goods are first moved within the place of storage named for the beginning of the transit and continues through the ordinary course of carriage until delivery at the destination named, subject to end points such as delivery to another warehouse chosen by the assured or the expiry of a period after discharge from the vessel. That structure produces predictable failure points. Goods rerouted mid-journey, stored at an intermediate location for the assured's convenience, or held after discharge while a buyer arranges finance can all sit outside the attaching transit. Where a deviation or delay is outside the assured's control, the wording generally holds cover, but only if the insurer is told promptly.

Sea-specific exposures the wording is built around

Two features distinguish the sea from other modes. First, when a vessel casualty triggers a general average declaration, cargo interests are called on to contribute towards the sacrifice or expenditure that saved the venture, and a marine policy is normally the mechanism that funds and secures that contribution. Second, containerised cargo travels unseen, so damage from condensation, poor stowage, water ingress and crushing is typically discovered only at unpacking, long after any evidence of the cause has gone. A further layer covers the risk of the whole venture failing rather than the goods being harmed. War and strikes perils are conventionally carved out of the main wording and reinstated by separate clauses whose geographic scope is reviewed as conditions change.

Duties that survive the loss

A marine wording imposes obligations on the assured after something has gone wrong. There is a duty to take reasonable measures to avert or minimise further loss, with the reasonable cost of doing so recoverable. There is a parallel duty to preserve and exercise rights against carriers, bailees and terminals, which in practice means claiming on the carrier in time and in the right form even while the insurance claim is running. Failing either duty gives an insurer a defence that has nothing to do with how the damage happened. This is the most common own-goal in marine claims and the easiest to avoid with a standing procedure.

Read the certificate, not the summary

What follows from all of this is educational only. Whether a specific loss is recoverable turns on the clause set attached to the certificate, the voyage and storage actually described, any warranties given, and the legal system whose courts would interpret them. Marine wordings also differ between markets that appear to use the same names for cover.

Frequently asked questions

Why is war cover sold separately from the main marine wording?

Because war and strikes perils behave differently from ordinary transit risk: they are concentrated, correlated across many shipments at once and tied to conditions in specific regions. Separating them lets underwriters review the geographic scope and terms independently of the main cover.

My goods arrived damaged but the container looked sound. Am I covered?

That depends entirely on the clause set. Under a broad wording the burden is generally on the insurer to bring the loss within an exclusion, which is why unexplained damage inside an apparently intact container is more comfortably placed there than on a named-perils basis.

Does marine cargo cover pay a general average contribution?

Standard marine cargo wordings are designed to respond to general average and salvage charges incurred to avoid a loss from an insured peril, and insurers routinely provide the security that releases the cargo. Confirm the point with the insurer before signing anything an average adjuster sends.