Marine Cargo Insurance: Annual and Single Trip Coverage Explained

Introduction

Marine cargo insurance protects your goods in transit against physical loss or damage, whether you're shipping domestically within Australia or internationally. Whether you're a frequent shipper or making the occasional international purchase, there's a marine cargo policy designed for your needs. This guide covers the two main policy structures—annual open cover and single voyage policies—the coverage options available, and real-world claim scenarios.

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Policy Types: Which One Suits You?

Annual Cover 

Best for: Businesses that ship regularly and frequently throughout a 12-month period.

An open cover policy automatically insures all shipments falling within the agreed scope during a 12-month insurance period, without needing to notify your insurer for each shipment. You make an estimated declaration of total import or export value at the policy's start, then declare individual shipments as you send them (typically weekly or monthly). Premiums are adjusted at the end of the policy period based on your actual declared values.

Key advantages:

• Lower cost-per-shipment through bulk premium rates

• Minimal administrative overhead—each shipment is automatically covered upon declaration

• Flexibility to adjust coverage as your trading patterns change

• More cost-effective for high-volume shippers

• Streamlined claims process with pre-agreed terms

Coverage scope: The policy specifies the types of goods, countries of origin and destination, maximum limits per shipment, and valuation basis (usually invoice cost plus freight and insurance plus 10%, known as CIF+10%).

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Single Transit / Voyage Policies

Best for: One-off shipments, occasional shippers, or businesses testing new suppliers or trade routes.

A single voyage policy covers one specific shipment from origin to final destination. You purchase coverage for that shipment alone, paying a single premium upfront with no further adjustments or declarations needed unless the shipment details change.

Key advantages:

• Simple, straightforward coverage for one-off shipments

• No ongoing declarations or administrative requirements

• Ideal for testing new suppliers before committing to regular imports

• Lower entry cost if you ship infrequently

• Flexibility to choose different coverage levels per shipment

Coverage scope: The policy details the specific goods, their declared value, departure and destination points, and mode of transport. Australian providers offer single transit cover with maximums up to AUD 5 million, with minimum premiums from around AUD 350 per shipment.

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Transit Period and Coverage Timing

Marine cargo coverage is "warehouse to warehouse"—it attaches when goods leave the warehouse or storage location at origin and continues through the entire journey, including transshipment and temporary storage, until delivery to the final warehouse at destination.

Coverage terminates at the earliest of:

• Delivery to the final warehouse at destination

• Delivery to any other storage facility the carrier uses before the final destination

• 60 days after discharge from the overseas vessel (for sea transit)

• 30 days after discharge from aircraft (for air transit)

If your goods regularly sit in bonded warehouses or port facilities beyond these time limits, you'll need to arrange separate storage cover or extend your marine policy.

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What's Covered: A Practical Look

Physical loss or damage during transit:

• Accidental damage (collision, rough seas, accidents)

• Theft or pilferage

• Fire and explosion

• Total loss or partial damage

• Loss of non-delivery

Broader protection (depending on endorsements):

• General Average contributions (when cargo is deliberately sacrificed to save the ship or other goods)

• Sue and Labour costs (reasonable expenses to minimise or prevent further loss, such as repacking or redirecting goods)

• Third-party liability (if your cargo damages someone else's property)

• Strikes, Riots, and Civil Commotion coverage (must be added; war risks typically excluded by default)

• Inland transport beyond the port (loading, unloading, storage at origin and destination)

Specialist coverage available:

• Perishable goods (spoilage from unexpected delays or equipment failures)

• Temperature-controlled cargo (frozen goods, pharmaceuticals, flowers)

• Regulatory rejection (if goods are denied entry by customs or quarantine)

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Choosing the Right Policy for Your Business

Choose Annual Open Cover if:

• You ship regularly (multiple times per month)

• You import or export to consistent routes and suppliers

• You want lower per-shipment costs and streamlined admin

• Your shipment values are predictable

Choose Single Voyage Coverage if:

• You ship occasionally or one-off

• You're testing new suppliers or markets

• You want simplicity and no ongoing declarations

• Your shipping is irregular

Choose ICC (A) if:

• Your cargo is high-value or fragile

• Goods are critical to your business continuity

• You need the broadest possible protection

Choose ICC (B) if:

• You want reasonable protection at moderate cost

• Your cargo is standard commercial goods

• Theft during transit is unlikely (or can be added separately)

Choose ICC (C) if:

• Your cargo is low-value or highly robust

• Goods are bulk commodities in sealed containers

• You're willing to accept limited protection to reduce cost

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Next Steps

Work with us to:

1. Assess your shipping frequency and value

2. Choose the policy type (annual or single voyage) that fits your business

3. Select the appropriate coverage level (ICC A, B, or C)

4. Confirm your valuation basis and any additional endorsements (war risk, strikes, perishable goods coverage)

5. Understand the warehouse-to-warehouse timing and time limits

6. Arrange any specialist coverage (e.g., regulatory rejection, inland transport)

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Reach out to our Marine Cargo specialist Kirby today on 02 6555 5022