Open Cover Marine Cargo Insurance
Annual marine cargo facility that covers all your shipments during the policy year. One set of agreed terms, automatic coverage for every qualifying consignment, and premium based on what you actually ship. Structured under Institute Cargo Clauses (A) with optional war risk and strikes extensions.
Annual marine cargo facility that covers all your shipments during the policy year. One set of agreed terms, automatic coverage for every qualifying consignment, and premium based on what you actually ship. Structured under Institute Cargo Clauses (A) with optional war risk and strikes extensions.
Our Specialisation
Marine Cargo & Liability Specialists We focus on marine cargo insurance and freight forwarder liability. This means deeper underwriter relationships, faster placements, and better terms for your trade programme.
Asia-Pacific Trade Corridors We work with underwriters who understand the commodities and shipping routes coming out of Malaysia, Singapore, and Southeast Asia. Regional expertise, global coverage.
Specialist Extensions War risk, strikes, specie, and project cargo. We arrange coverage others decline, including high-value goods and shipments through conflict-affected corridors.
You export 200 containers of palm oil a year from Port Klang. Each shipment is worth $80,000 to $150,000. Right now, you are arranging insurance one shipment at a time, or not insuring some shipments at all because the process is too slow.
An open cover fixes this. You agree terms with an underwriter once. Every shipment you make during the policy year is automatically covered from the moment goods leave your warehouse. You declare what you shipped at month-end and pay premium on actual values. No per-shipment applications. No gaps. No missed consignments.
This page covers:
- How open cover marine cargo insurance works
- Open cover vs single shipment: when each makes sense
- What goes into structuring your facility
- Declaration mechanisms and how premium is calculated
- What your open cover includes
- Who open cover is designed for
- Frequently asked questions about open cover facilities
How Open Cover Marine Cargo Insurance Works
An open cover is a standing marine cargo insurance facility. It runs for 12 months (renewable annually) and covers all qualifying shipments made during the policy period.
| Feature | How It Works |
|---|---|
| Automatic attachment | Coverage attaches the moment goods leave the origin warehouse for each shipment. No need to notify the insurer before each consignment. |
| Agreed terms | Coverage basis (typically ICC (A)), limits, commodity scope, trade routes, and premium rates are agreed upfront for the full policy year. |
| Declaration-based premium | You declare shipments after they are made, usually monthly. Premium is calculated on the actual value shipped, not an estimate. |
| Warehouse-to-warehouse | Each shipment is covered from origin warehouse through transit to final destination warehouse, including loading, unloading, transhipment, and intermediate storage. |
| Certificate issuance | Insurance certificates are issued per shipment or per declaration, providing evidence of cover for buyers, banks, and Letters of Credit. |
| Renewable annually | At renewal, terms are reviewed based on your claims experience, shipment patterns, and market conditions. |
The mechanics are straightforward. You ship goods. At month-end, you submit a bordereaux listing all shipments made that month, with values, origins, destinations, and conveyance details. Your premium is calculated based on the declared values at the agreed rate. Your insurer issues confirmation. Every shipment is covered from day one, no paperwork before each sailing.
Open Cover vs Single Shipment Marine Cargo Insurance
Both structures protect your cargo. The right choice depends on how often you ship and how predictable your trade programme is.
| Factor | Open Cover | Single Shipment |
|---|---|---|
| Best for | Regular shippers (10+ shipments per year) | Occasional or one-off shipments |
| Coverage activation | Automatic on each shipment | Must be arranged before each consignment |
| Premium basis | Rate applied to actual declared values, paid monthly or quarterly | Per-shipment premium, paid upfront |
| Pricing | Lower per-shipment cost due to volume commitment | Higher per-shipment rate, no volume benefit |
| Admin burden | Monthly declaration (bordereaux) | Individual application per shipment |
| Coverage consistency | Same terms across all shipments | Terms may vary per placement |
| Risk of gaps | Minimal: coverage is automatic | Higher: a missed application means no cover |
| LC and trade finance | Certificates issued on demand from standing facility | Certificate arranged per shipment, potential delays |
When open cover makes sense: You ship regularly. Your trade routes and commodities are reasonably consistent. You need insurance certificates for Letters of Credit or buyer requirements. You want certainty that every shipment is covered without per-consignment admin.
When single shipment makes sense: You ship infrequently (fewer than 10 times per year). You have a one-off project cargo movement outside your normal programme. You are testing a new trade corridor and do not yet have enough volume for a facility.
What Your Open Cover Includes
A standard Voyage open cover facility is built on the following components. Each is tailored to your trade profile.
| Component | Detail |
|---|---|
| Coverage basis | Institute Cargo Clauses (A) 2009: all-risks cover. Covers all causes of physical loss or damage except specific exclusions (war, strikes, inherent vice, delay, insolvency, packing deficiency). |
| War risk extension | Institute War Clauses (Cargo) CL385. Covers war, civil war, hostile acts, capture, seizure, weapons of war. Waterborne only: attaches on loading aboard the overseas vessel, terminates on discharge or 15 days after arrival. Cancellable by insurer with 7 days' notice (Lloyd's). |
| Strikes extension | Institute Strikes Clauses (Cargo) CL386. Covers strikers, labour disturbances, riots, civil commotions, terrorism. Warehouse-to-warehouse duration (same as standard ICC). |
| Warehouse-to-warehouse transit | Origin warehouse to final destination warehouse, including all intermediate stages. Subject to transit clause termination triggers in Clause 8 of ICC (A) 2009, including 60-day limit after discharge at final port. |
| General average | Automatically covers your proportional GA contribution on any covered shipment, plus salvage charges. |
| Both to Blame Collision | Indemnifies you against liability under Both to Blame Collision clauses in the contract of carriage (ICC (A) Clause 3). |
| Certificate issuance | Certificates issued from the standing facility per shipment or per Bill of Lading. Satisfies LC documentary requirements, buyer insurance clauses, and trade finance conditions. |
Structuring Your Open Cover Facility
No two open cover facilities are identical. Yours is built around how your business actually ships.
| Variable | Why It Matters |
|---|---|
| Commodity scope | What goods does the facility cover? Commodity type determines the risk profile, underwriter appetite, and specific coverage considerations. A palm oil exporter needs different terms from an electronics manufacturer. Your facility can cover a single commodity class or multiple. |
| Trade routes | Origin-destination pairs, transhipment points, and the corridors in between. A Malaysia-to-Europe facility has different risk characteristics from a Malaysia-to-Middle East facility. Shipments outside agreed routes may require prior notification or additional premium. |
| Conveyance | Sea, air, road, rail, or combined transport. Most open covers are multi-modal, covering all transport types within the same facility. |
| Per-shipment limit | The maximum insured value per single consignment. A shipment exceeding your limit is only covered up to the limit. The excess is uninsured. |
| Annual aggregate | The estimated total value of all shipments during the policy year. Sets expectations for the underwriter and affects pricing. Notify your broker if actual volumes significantly exceed the estimate. |
| Basis of valuation | How shipment values are calculated for insurance purposes. Typically CIF + 10% (cost, insurance, and freight plus a 10% uplift). Some facilities use invoice value or replacement value depending on trade terms and commodity. |
Declaration Mechanisms
| Method | How It Works | Best For |
|---|---|---|
| Monthly bordereaux | Submit a list of all shipments made that month with values, origins, destinations, and vessel details. Premium calculated on actual declared values. | Regular shippers with consistent volumes |
| Individual declarations | Each shipment declared individually, usually at or near the time of sailing. | Lower-frequency shippers or high-value consignments needing per-shipment certificates |
| Turnover-based | Premium calculated on total annual shipment value, with periodic adjustment. | Very high-volume shippers where per-shipment tracking is impractical |
Monthly bordereaux is the most common mechanism. It balances accuracy with administrative efficiency.
Premium and Cost Factors
Open cover premium is a rate (percentage) applied to declared shipment values. The rate is agreed at inception and typically fixed for the policy year, subject to review at renewal.
| Factor | Impact on Rate |
|---|---|
| Commodity | Higher-risk goods (electronics, high-theft items) attract higher rates. Lower-risk bulk commodities may attract lower rates. |
| Trade routes | Routes through piracy zones, theft-prone corridors, or geopolitically unstable areas increase the rate. |
| Conveyance | Sea freight is the baseline. Air freight typically attracts lower cargo rates due to shorter transit and less exposure. |
| Claims history | A clean loss record earns better terms at renewal. Frequent or severe claims push rates up. |
| Per-shipment values | Higher individual shipment values increase underwriter exposure and may affect pricing. |
| Packing quality | Well-packed, containerised cargo in standard shipping containers attracts better terms than breakbulk or poorly packed goods. |
| Annual volume | Larger total volumes provide underwriters more premium, which can translate to better per-shipment rates. |
War risk additional premium is priced separately from your base cargo rate. For shipments transiting JWC listed areas, an additional premium applies per transit. These rates are volatile and subject to change at short notice.
Voyage does not publish indicative rates. Rates vary too widely by commodity, route, volume, claims history, and market conditions. Contact us for a quotation based on your specific trade programme.
Who Open Cover Is Designed For
| Audience | Why Open Cover Works |
|---|---|
| Manufacturers exporting finished goods | Regular shipment schedules to established buyers. Automatic coverage eliminates per-shipment admin. |
| Commodity traders | Bulk shipments across defined corridors throughout the year. Consistent terms and pricing across your trading programme. |
| Importers receiving regular inventory | Containerised goods arriving from overseas suppliers on a recurring basis. Monthly declarations match your shipping rhythm. |
| Electronics and semiconductor companies | High-value, high-frequency shipments from ASEAN manufacturing hubs. Fast certificate issuance for time-sensitive air freight. |
| Garment exporters | Weekly or fortnightly shipments to Europe and North America. Volume commitment earns better rates. LC certificates issued from standing facility. |
| Trading houses | Diverse commodity flows across multiple routes. One facility covering all shipments simplifies administration and ensures consistency. |
| Any business making 10+ international shipments per year | If you ship regularly and some consignments are going out uninsured because the process is too slow, open cover is the solution. |
Common Open Cover Scenarios
Scenario 1: Palm Oil Exporter, Port Klang to Rotterdam
A Malaysian palm oil producer exports 15,000 MT annually in flexitanks and ISO tank containers. Shipments run monthly, $80,000 to $150,000 per consignment, CIF terms. The open cover provides ICC (A) with war and strikes extensions. Monthly bordereaux declaration. Certificates issued per Bill of Lading for buyer's bank.
| Component | Detail |
|---|---|
| Commodity | Crude palm oil in flexitanks and ISO tanks |
| Annual volume | ~15,000 MT |
| Per-shipment value | $80,000 to $150,000 |
| Trade terms | CIF Rotterdam |
| Coverage | ICC (A) + War + Strikes |
| Declaration | Monthly bordereaux |
| Certificate | Per Bill of Lading, assignable for LC |
Scenario 2: Electronics Manufacturer, Penang to Multiple Destinations
A semiconductor packaging company ships $2M+ monthly across 40 to 50 consignments to customers in the US, Japan, South Korea, and Europe. Mixed conveyance: air freight for urgent orders, sea freight for standard deliveries. High per-shipment values, some exceeding $500,000.
| Component | Detail |
|---|---|
| Commodity | Semiconductor packages, integrated circuits |
| Annual volume | $24M+ in shipment values |
| Per-shipment value | $20,000 to $500,000+ |
| Trade terms | Mixed (FOB, CIF, DDP depending on customer) |
| Coverage | ICC (A) + War + Strikes |
| Declaration | Individual declarations for high-value air, monthly bordereaux for sea |
| Key considerations | Theft, ESD sensitivity, rapid certificate issuance for air freight |
Scenario 3: Garment Exporter, Dhaka to Europe
A Bangladeshi garment manufacturer ships 200+ containers annually to buyers across the EU and UK, shifting from FOB to CIF to offer more competitive trade terms. High frequency means even small premium savings per container compound across the year.
| Component | Detail |
|---|---|
| Commodity | Ready-made garments |
| Annual volume | 200+ containers |
| Per-shipment value | $30,000 to $80,000 |
| Trade terms | CIF (transitioning from FOB) |
| Coverage | ICC (A) + War + Strikes |
| Declaration | Monthly bordereaux |
| Key considerations | Water damage, pilferage, LC documentary requirements |
How Voyage Structures Your Open Cover
| Step | What Happens |
|---|---|
| 1. Trade profile review | We review your shipping patterns: commodities, routes, volumes, values, conveyance, trade terms, and any specific requirements (LC conditions, buyer clauses, regulatory obligations). |
| 2. Facility design | We structure the open cover terms: coverage basis, limits, commodity scope, geographic scope, declaration mechanism, and specialist extensions. |
| 3. Market placement | We approach underwriters with appetite for your commodity and corridors. We present your risk clearly and negotiate terms that reflect your actual exposure. |
| 4. Policy inception | Your facility goes live. Every qualifying shipment is covered from inception. Certificates issued as needed for trade finance and buyer requirements. |
| 5. Ongoing management | Monthly declarations, premium reconciliation, certificate issuance, and monitoring throughout the policy year. At renewal, we review performance and negotiate terms for the next period. |
Frequently Asked Questions (FAQ)
What is an open cover in marine cargo insurance?
An open cover is an annual insurance facility that automatically covers all qualifying shipments during the policy year. Terms are agreed once at inception. Each shipment is covered from the moment goods leave the origin warehouse. You declare shipments after they are made (typically monthly) and pay premium based on actual values shipped.
How is open cover premium calculated?
Premium is a rate (percentage) applied to the declared value of each shipment. The rate is agreed at inception based on your commodity, trade routes, volume, and claims history. You pay monthly or quarterly based on actual shipment declarations. War risk additional premiums are charged separately for shipments transiting JWC listed areas.
What happens if I forget to declare a shipment?
Under most open cover wordings, all qualifying shipments are covered from the moment of transit, whether or not you have declared them yet. The obligation is to declare honestly at the agreed intervals. Consistently failing to declare shipments is a breach of your policy terms and could jeopardise your cover.
Can my open cover be cancelled mid-year?
The base cargo cover typically runs for the full 12-month period. War risk and strikes extensions can be cancelled by the insurer with 7 days' notice (Lloyd's wordings) or 48 hours (some US wordings). Your standard coverage remains stable, but specialist extensions can be withdrawn if the risk environment changes.
Does open cover work for air freight as well as sea freight?
Yes. Most open covers are multi-modal, covering sea, air, road, and rail under the same facility. Institute Cargo Clauses (Air) apply to air shipments, while standard ICC (A) applies to sea. The facility handles both.
What documents do I need to set up an open cover?
At minimum: a description of your commodities, your main trade routes (origins and destinations), estimated annual shipment values, per-shipment value ranges, conveyance types, and any specific requirements such as LC conditions or buyer insurance clauses. We may also ask for your claims history if you have had prior cargo insurance.
Can I add new trade routes or commodities during the policy year?
Yes, subject to underwriter agreement. If you start shipping a new commodity or open a new trade corridor mid-year, notify your broker. Most open covers can be extended or endorsed to cover additional routes and goods. Some changes may affect your premium rate.
How do open cover certificates work with Letters of Credit?
Your open cover facility allows certificates to be issued per shipment or per Bill of Lading. The certificate confirms the coverage terms, insured value, and voyage details. It can be made assignable, which is typically required for LC documentary collections. Because the facility is already in place, certificate issuance is fast, usually within 24 hours of receiving the shipment details.
What is the difference between open cover and a floating policy?
Both provide standing coverage for multiple shipments. In practice, the terms are often used interchangeably. Technically, an open cover is an agreement to insure, while a floating policy is a policy with a total sum insured that reduces with each declaration. Most modern marine cargo programmes use open cover structures with declaration-based premium.
Voyage Conclusion
Open cover is the standard structure for any business that ships regularly. It provides automatic coverage, consistent terms, lower per-shipment costs, and the certainty that every consignment is protected from the moment it leaves your warehouse. If you are currently insuring shipments individually, or if some of your cargo is travelling without coverage because the process is too slow, open cover is the solution.
Disclaimer: This page provides general guidance on open cover marine cargo insurance. Coverage terms, conditions, and availability vary by insurer, policy, and jurisdiction. Rates and premium indications are illustrative and do not constitute offers of coverage. Always review your specific policy wording and consult a qualified insurance professional before making coverage decisions.
Our Solutions
| Solution | Description |
|---|---|
| Marine Cargo Insurance | Overview of marine cargo coverage, who needs it, and how Voyage works with cargo owners. |
| Single Shipment Cover | Ad hoc coverage for individual consignments. Project cargo, one-off shipments, new market testing. |
| War Risk & Strikes Cover | Institute War Clauses (Cargo) CL385 and Institute Strikes Clauses (Cargo) CL386 for high-risk corridors. |
| Marine Liability Insurance | Freight forwarder's liability, cargo legal liability, and E&O cover for logistics providers. |
Let's Talk About Your Trade Programme
If you ship goods internationally on a regular basis and want consistent, automatic cargo insurance coverage, we can structure an open cover facility around your commodities, routes, and volumes.
Voyage is a specialist marine cargo insurance platform arranging coverage for goods in transit worldwide. All insurance is arranged through licensed broking partners. Voyage is not an insurer.
Why Voyage
Marine Insurance Specialists
International Underwriter Access
Both Sides of the Supply Chain
Malaysia and Singapore Expertise
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Voyage is a specialist marine insurance intermediary arranging marine cargo and marine liability coverage for businesses in Malaysia, Singapore, and internationally. All insurance is placed through licensed broking partners.
Riskflow Sdn Bhd (202101001225):
Suite 3.19 (North Block), The Ampwalk, 218 Jalan Ampang, 50450 Kuala Lumpur, Wilayah Persekutuan Kuala Lumpur
t: +60149255243 (Samantha)
email: samantha@voyagecover.com