Media reports of insurers "canceling" war risk policies during conflict are misleading. The policy's "notice of cancellation" clause is a standard feature that allows underwriters to re-price the premium to match the sudden increase in risk. The coverage itself is not withdrawn but offered back at a new, higher rate.
The 12 major P&I clubs, while competitors, form an "International Group" to collectively purchase one of the world's largest reinsurance policies. This layered pooling structure allows them to cover catastrophic events up to $8 billion per incident, a level unattainable by any single club.
The American P&I Club was established in 1917 because the UK's "Trading with the Enemy Act" during WWI barred American ship owners, who were not yet in the war, from using London-based clubs. This geopolitical event forced the creation of a domestic maritime insurance mutual.
P&I insurance premiums are calculated as a rate per ton, but the tonnage itself doesn't signify risk. The "rate" is the variable that reflects the vessel's specific risk profile (e.g., a cruise ship vs. a barge). Tonnage simply scales that risk-based rate to the vessel's size.
Unlike a localized oil spill from a tanker, a sunken container ship can release thousands of containers that float across vast ocean areas. These containers are considered hazardous waste, requiring specialized disposal, and pose long-term navigational dangers, creating a more complex and expensive cleanup liability.
Ship owners form P&I clubs to collectively insure against liabilities that commercial insurers find too volatile to price. These not-for-profit mutuals pool funds, providing at-cost insurance and sharing risk across the industry rather than transferring it to a third-party for profit.
Despite Asia's dominance in shipbuilding and shipping routes, the core financial infrastructure for maritime insurance remains concentrated in Western hubs like London and New York. Major global traders, including Asian firms, still primarily use P&I clubs and underwriters based in the UK, Scandinavia, and the US.
Ship owners need separate insurance policies because the market is specialized. Mutual P&I clubs cover unpredictable third-party liabilities (e.g., pollution). Commercial underwriters handle asset-based risks like physical ship damage (hull & machinery) and war, which they can price more conventionally.
During a conflict, war risk underwriters differentiate premiums based on a vessel's situation. Ships already trapped in a high-risk zone pay a much lower rate (e.g., 0.5% of hull value) to get out, compared to ships voluntarily entering the zone to trade, which face rates as high as 3-10%.