Cargo Insurance for UK Project Cargo & Oversized Loads
Written by the London Marine Insurance editorial team · reviewed by Anton Kuznetsov, founder
Project cargo and oversized loads sit at the sharp end of marine cargo insurance. A single transformer, modular refinery skid, or wind-turbine nacelle can represent more capital exposure in one shipment than an entire year of containerised freight. Standard Institute Cargo Clauses (A) wording is the starting point, but the physical characteristics of your cargo — abnormal dimensions, multi-modal routing, heavy-lift vessel requirements, road-permit restrictions — create gaps that a generic policy will not fill. If you are a UK or EEA cargo owner, freight forwarder, or vessel operator moving oversized or out-of-gauge loads, this page explains what your cover should look like, where the exposures concentrate, and what your broker needs from you to place it properly in the London market.
What Makes Project Cargo Insurance Different
Conventional cargo policies are rated on commodity type, packing standard, and voyage. Project cargo underwriting adds a third dimension: the engineering risk of the load itself. An oversized transformer is not just heavy — it has a centre of gravity that shifts under dynamic sea conditions, it requires purpose-built seafastening, and it may need a heavy-lift vessel whose own hull class and survey status directly affect your cargo premium. Underwriters will want to see the seafastening and stowage plan before they quote, not after the vessel sails.
The Institute Cargo Clauses (A) provide the broadest all-risks cover available under standard London market wording, but 'all risks' does not mean 'all losses'. Inherent vice, inadequate packing, and delay are excluded regardless of clause set. For project cargo, the packing and securing exclusion is the one that bites most often: if your seafastening specification was inadequate and the load shifts in heavy weather, the underwriter will investigate whether the loss arose from a peril insured against or from a pre-existing deficiency in securing. Your broker should be asking the underwriter to confirm in writing how the seafastening plan has been reviewed and whether any endorsement conditions attach.
Institute Cargo Clauses (B) and (C) are rarely appropriate for high-value project cargo. Clause (B) covers named perils including earthquake and washing overboard but excludes theft and many handling losses. Clause (C) is a major-casualty-only cover. Unless your cargo is genuinely low-value and robust, insist on (A) wording with project-specific extensions.
Key Exposures on UK and EEA Project Cargo Movements
UK project cargo movements typically combine road, rail, inland waterway, and sea legs. Each modal transition is a claims flashpoint. Damage during cranage at a UK port, impact with a bridge or overhead structure on a road-permitted abnormal load movement, or grounding of a barge on the River Humber are all scenarios that your cargo policy must respond to without argument about which leg caused the loss. Confirm with your broker that your policy covers the full multi-modal transit from first movement at origin to final placement at destination, including all intermediate storage and transhipment.
General average is a live exposure on any project cargo shipment moving on a conventional or heavy-lift vessel. Under the York-Antwerp Rules (most voyage charter parties incorporate the 2016 Rules), if the vessel suffers a casualty requiring a general average act — jettison, emergency port call, salvage — your cargo's proportionate contribution can be substantial. Your cargo policy should include a general average and salvage charges extension so that your insurer funds your GA deposit and contribution directly, rather than leaving you to post security out of your own cash flow while the average adjuster works through the claim.
The Inchmaree clause, incorporated into most Institute Hull Clauses and often extended into cargo covers for project shipments on chartered tonnage, covers loss caused by the negligence of masters, officers, or crew, and by latent defects in the vessel's hull or machinery. If you are chartering a heavy-lift vessel and the crane fails due to a latent defect, the Inchmaree extension is what allows your cargo claim to proceed against your own underwriter rather than forcing you into a protracted liability dispute with the shipowner.
War and strikes cover is not automatic under Institute Cargo Clauses (A). It must be added by endorsement, typically on Institute War Clauses (Cargo) and Institute Strikes Clauses (Cargo) terms. For UK project cargo moving through or near the Bab-el-Mandeb strait, the Persian Gulf, or other Joint War Committee-listed areas, additional war risk premium applies and cover may be subject to held-covered provisions requiring prior notification. If your routing takes the vessel through a listed area, tell your broker before the vessel enters — not after.
- Multi-modal transit gaps: confirm cover attaches at first movement and ceases only at final placement
- General average exposure: your policy should fund GA deposits and contributions without recourse to you
- Seafastening and stowage: underwriters may attach survey conditions — comply or risk a coverage dispute
- War and strikes: not included in standard (A) wording; must be endorsed separately
- Delay and consequential loss: excluded under all Institute Cargo Clauses; consider a separate advance loss of profits or delay-in-start-up policy if project completion penalties apply
- Inherent vice and inadequate packing: excluded; your pre-shipment survey and packing specification are your first line of defence
Carriage Contracts, Liability Limits and Why They Matter to Your Cover
The Hague-Visby Rules govern most UK seaborne cargo movements under bills of lading. They cap the carrier's liability per package or per kilogramme — a limit that is almost always far below the value of a single project cargo item. If your transformer is damaged and the carrier is at fault, the recoverable amount from the carrier under Hague-Visby is a fraction of the loss. Your cargo insurance is not a top-up to the carrier's liability; it is your primary recovery mechanism. Do not assume that a carrier's P&I club will make you whole.
The Hamburg Rules and Rotterdam Rules extend carrier liability in certain respects, but the UK has not ratified either convention and most UK-origin bills of lading still incorporate Hague-Visby. EEA counterparties may operate under different regimes. When your freight forwarder issues a house bill of lading, their liability is typically governed by BIFA or FIATA standard trading conditions, which carry their own per-unit liability caps. These are not your cargo insurance — they are a separate and much lower layer of recovery. Your broker should review your transport contracts and confirm that your cargo policy responds as primary cover regardless of what the carrier's liability position turns out to be.
For road legs within the UK and EEA, CMR (Convention on the Contract for the International Carriage of Goods by Road) applies. CMR liability is capped per kilogramme of gross weight of the goods lost or damaged. For a heavy transformer, the CMR cap per kilogramme may still leave a very large unrecovered balance. Again, your cargo policy bridges that gap — provided the policy wording does not contain a subrogation waiver or co-insurance clause that inadvertently reduces your recovery.
What Underwriters Need to Quote Your Project Cargo Risk
Project cargo is individually rated. There is no tariff. Underwriters in the London company market and specialist cargo markets will assess your submission on its own merits, and the quality of information you provide directly affects both the premium and the breadth of cover offered. A thin submission produces a wide exclusion list and a conservative limit. A well-documented submission — with engineering drawings, seafastening plans, vessel details, and a clear routing schedule — gives the underwriter confidence to offer broader terms.
Your broker will need the following from you before approaching the market. The more complete your submission, the faster the bind and the fewer conditions attached to your policy.
- Full description of the cargo: commodity, dimensions (length, width, height, weight), centre of gravity if known
- Declared value (insured value should include freight, insurance, and a reasonable uplift for duty and re-procurement costs)
- Complete routing: origin, all intermediate ports and transhipment points, destination, estimated transit dates
- Vessel details: name, flag, class, year of build, gross tonnage, and — for heavy-lift vessels — crane capacity and last survey date
- Seafastening and stowage plan or specification (if not yet finalised, confirm when it will be available)
- Details of any pre-shipment survey or inspection requirements
- Your existing cargo policy schedule if you are seeking to place this as a single-voyage top-up or excess layer
- Any contractual insurance requirements from your buyer, EPC contractor, or project lender
Sue and Labour, Duty of Assured, and What to Do When Something Goes Wrong
The sue-and-labour clause in your cargo policy obliges you — and entitles you — to take reasonable steps to avert or minimise a loss, and to recover your costs of doing so from underwriters. For project cargo, this is not a formality. If your load is damaged at a port of refuge, the cost of emergency cranage, temporary storage, and specialist assessment can be very large. These costs are recoverable under sue and labour provided you act promptly and document everything. Failure to act — leaving damaged cargo exposed without taking protective measures — can give underwriters grounds to reduce their settlement on the basis that you failed your duty of assured.
Notify your broker the moment you become aware of a potential claim or circumstance. Do not wait for a formal survey report. Underwriters have the right to appoint their own surveyor, and that right is time-sensitive — particularly where cargo is in a port with limited dwell time or where the vessel is about to sail. Your broker should be contacting the underwriter's appointed average adjuster or claims handler within hours of notification, not days.
Preserve all documentation: bills of lading, mate's receipts, outturn reports, photographs, crane logs, weather data, and any correspondence with the carrier or port authority. In a project cargo claim, the cause of loss is almost always disputed. The carrier will argue the cargo was inadequately secured; you will argue the vessel's crane failed or the seafastening was disturbed during loading. Documentary evidence gathered at the time is worth far more than witness statements taken months later.
Renewal, Capacity and Market Conditions for UK Project Cargo
Project cargo capacity in the London market is concentrated among a relatively small number of specialist underwriters with engineering expertise. This is not a commodity line where you can simply go to the cheapest quote. Underwriters who understand heavy-lift operations, who have relationships with specialist surveyors, and who have claims-handling experience with large project losses are worth more than a marginally lower premium from a market that has never seen a transformer claim.
At renewal, your broker should be presenting your loss record, any changes to your typical cargo profile, and any new routing or vessel requirements. If you have had a claim in the past three years, be prepared for underwriters to ask detailed questions about root cause and remediation. A well-managed claim with clear documentation and a credible corrective action record is far less damaging to your renewal than a claim that was poorly documented or disputed.
Capacity for very high-value single items — power generation equipment, offshore modules, large industrial plant — can require co-insurance across multiple markets. Your broker should be transparent about how the risk is being structured: who is the lead underwriter, what are the following market's terms, and whether any market has attached conditions that differ from the lead. You should receive a single consolidated policy schedule, not a patchwork of separate slips with inconsistent wording.
Frequently asked questions
- Do I need a separate policy for each project cargo shipment, or can I use an open cover?
- Both structures are available. An open cover (annual declaration policy) works well if you move project cargo regularly and can declare each shipment against agreed rates and conditions. For a one-off high-value movement, a single-voyage policy is usually more appropriate and allows the terms to be tailored precisely to that shipment's characteristics. Your broker will advise which structure gives you better coverage and better value based on your shipment frequency.
- What happens if my cargo is damaged at a port of transhipment outside the UK?
- Your cargo policy follows the goods, not the flag or the port. Provided the loss occurs during the insured transit — which should run from first movement at origin to final placement at destination — the location of the damage does not affect your right to claim. What matters is that you notify your broker immediately, preserve evidence, and comply with any survey conditions attached to your policy. If the transhipment point is in a JWC-listed war risk area, confirm before the voyage that your war risk endorsement covers that location.
- My EPC contractor's contract requires me to insure the cargo on 'all risks' terms with a minimum insured value. Does my current policy satisfy that?
- Possibly, but you need to check carefully. 'All risks' in a contract clause usually means Institute Cargo Clauses (A) as a minimum, but the contract may also specify minimum limits, named additional insureds, waiver of subrogation in favour of the contractor, or specific war risk cover. Your broker should review the insurance requirements clause in your EPC contract and confirm in writing that your policy meets each requirement. A mismatch between your policy and your contractual obligation can leave you in breach of contract even if the cargo itself is insured.
- How long does it take to bind cover for a large project cargo shipment?
- For a well-documented submission on a straightforward routing, cover can typically be bound within two to three working days. For complex movements — multiple legs, high declared values, unusual cargo characteristics, or routing through war risk areas — allow five to seven working days minimum, and longer if a pre-shipment survey is required as a condition of cover. Do not leave placement to the week before loading. If the vessel sails uninsured because placement was delayed, you have no recourse.
- What is the difference between cargo insurance and the freight forwarder's liability cover?
- Your freight forwarder carries liability insurance (typically on BIFA or FIATA terms) that covers their legal liability to you if they cause a loss through their own negligence. That liability is capped — often at a low per-unit or per-kilogramme limit — and it only responds if the forwarder is at fault. Cargo insurance covers your goods against physical loss or damage regardless of fault, up to the full insured value. For project cargo, you should always carry your own cargo policy. The forwarder's liability cover is not a substitute.
- Do I need to declare the cargo to my insurer before the vessel sails, or can I notify after?
- Under an open cover, you are obliged to declare each shipment promptly — typically before or at the time of sailing. Failure to declare on time can give underwriters grounds to avoid the claim on that shipment. For a single-voyage policy, cover must be bound before the voyage commences. There is no valid 'held covered' position on an unplaced risk. If your shipment schedule changes at short notice, call your broker immediately — most underwriters will accommodate late declarations on an open cover provided the request is made in good faith and before a loss is known.
If you are moving project cargo or oversized loads and want to review your current cover or place a new risk, contact our cargo team with your shipment details. We will prepare a structured submission for the London market and come back to you with terms, not questions.