Marine Insurance: Shaping the Flow of Global Trade

Global trade is widely understood to depend on supply chains, geopolitics, and infrastructure. Marine insurance is just as critical, as it plays a central role in keeping goods moving across the world.

Cargo ships may have access to open waterways, but they can’t operate without coverage. Ports, regulators, and lenders require proof of insurance before a vessel is allowed to sail. As a result, the movement of goods isn’t determined by access alone, it depends on whether the risk can be insured.

Disruptions such as political instability, regional conflicts, or heightened security threats can quickly shift risk conditions. As risk increases, insurance becomes more expensive, more limited, or unavailable altogether. When coverage is too costly or difficult to secure, shipping activity can slow or stop entirely, even if routes remain open.

What Is Marine Insurance?

Marine insurance (also known as maritime insurance) protects against financial losses associated with transporting goods over water. It supports nearly every aspect of global trade by covering vessels, cargo, and the liabilities that can arise during transit.

There are three primary components:

Hull Insurance

Hull insurance covers physical damage to the vessel itself, including risks such as collisions, fires, and mechanical failures. Given the high value of commercial ships, this coverage is essential for vessel owners.

Cargo Insurance

Cargo insurance protects the goods being transported. Whether it’s oil, consumer products, or industrial materials, this coverage helps mitigate financial loss if cargo is damaged, lost, or delayed during transit.

Protection & Indemnity (P&I)

P&I insurance covers third-party liabilities. This can include environmental damage, injury or death of crew members, and damage to other vessels or property. These policies are typically provided by specialized mutual insurers known as P&I clubs.

Together, these coverages form the foundation of marine risk management. Without them, global shipping would be financially unsustainable.

Where Standard Coverage Ends: War Risk Insurance

Standard marine insurance policies typically exclude high-risk events related to conflict, seizure, or extreme political instability. To cover these exposures, insurers offer separate “war risk” policies.

War risk insurance applies when vessels operate in regions where threats are elevated. This can include situations where a ship is seized or held by authorities, damaged by military or hostile activity, or prevented from completing a voyage due to safety concerns.

Unlike standard coverage, war risk insurance is highly responsive to changing conditions. As risk levels shift, pricing can increase quickly, coverage may be restricted, and insurers may reassess each trip individually based on current conditions.

This responsiveness is necessary given the nature of these risks, but it also creates uncertainty for shipowners and operators. Costs can change with little notice, and coverage that is available one day may be limited or unavailable the next. If coverage becomes unavailable, ships may not be able to operate at all, reducing the movement of goods and disrupting global trade.

Why Marine Insurance Matters

Shipping Depends on Marine Insurance Availability

Commercial vessels cannot operate without insurance. Ports, financiers, and regulators all require proof of coverage before a ship is allowed to sail.

When insurers reduce coverage or pull back from higher-risk regions, ships may be forced to reroute or stay idle because the risk is too high to insure at a reasonable cost.

Risk Conditions Can Change Costs Quickly

Insurance pricing can change rapidly as risk conditions shift. In periods of instability, premiums may increase sharply in a matter of days.

For example, war risk premiums for vessels operating in high-risk regions have risen from roughly 0.1%–0.15% of a vessel’s value to as high as 1%–2.5% during periods of heightened risk (S&P Global). For large vessels, this represents a significant increase in the cost of a single voyage.

Coverage Can Become More Limited

In addition to higher costs, insurers may narrow what they are willing to cover. This can include:

• Limiting coverage to certain routes
• Requiring additional approvals before a ship can pass through higher-risk areas
• Evaluating and approving coverage for each trip individually

These changes add complexity for shipowners and brokers, slowing decisions and making operations more difficult to manage.

Marine Insurance Constraints Can Disrupt Supply Chains

Even when shipping routes remain physically open, insurance limitations can ripple through the broader supply chain.

If coverage becomes too expensive or difficult to secure, operators may delay or cancel voyages. This reduces vessel traffic, delays deliveries, and creates bottlenecks in the movement of goods.

Over time, these disruptions can lead to inventory shortages, higher transportation costs, and broader economic impacts, showing how insurance challenges can extend far beyond the shipping industry itself.

Final Thoughts

As global risk conditions become more unpredictable, marine insurance is playing an increasingly active role in shaping how trade operates.

Decisions made by insurers around pricing, coverage, and where they are willing to take on risk can influence shipping patterns, reroute global flows, and determine which regions remain commercially viable.

In that sense, marine insurance doesn’t just respond to global events; it helps shape how those events affect trade.

Want clarity in high-risk claims? Connect with our experts today.

Check out our sources:

Howden Group Holdings. “Howden Re Analysis of Marine Risk Pricing.” 2026.

International Chamber of Shipping. “Shipping and World Trade.” ICS Shipping, https://www.ics-shipping.org/shipping-facts/shipping-and-world-trade/.

Lloyd’s Market Association. “Marine Insurance Overview.” LMA, https://www.lmalloyds.com/LMA/Underwriting/Marine.aspx.

S&P Global. “War Risk Insurance Costs Off Highs but Still Elevated in Persian Gulf.” S&P Global, 2026.

United Nations Conference on Trade and Development (UNCTAD). “Review of Maritime Transport.” UNCTAD, https://unctad.org/topic/transport-and-trade-logistics/review-of-maritime-transport.