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P&I Insurance (Protection and Indemnity)

Insurance and Risk TransferUpdated 03 Nov 2026

P&I insurance (protection and indemnity insurance) is marine insurance that covers a shipowner's or charterer's liabilities to third parties arising from operating a ship. Typical claims include injury or death of crew and passengers, loss of or damage to cargo, oil pollution, wreck removal and damage to docks or other property. Most of the world's ocean-going fleet buys this cover from P&I clubs, which are mutual associations owned by the shipowners they insure.

P&I cover is separate from hull and machinery insurance, which pays for damage to the ship itself, and from cargo insurance bought by the goods' owner. Twelve leading clubs form the International Group of P&I Clubs, which shares large claims among them and buys reinsurance collectively. Outside that group, some insurers sell P&I on a fixed-premium basis.

01

P&I insurance in plain terms

Imagine a group of neighbours who each own a large, risky machine, such as a crane. Any one of them could one day cause an accident costing more than they could pay alone. So they set up a shared fund, each puts money in at the start of the year, and the fund pays when one of them is sued. If the year goes badly, everyone tops up; if it goes well, the money stays in the pot for later.

A P&I club is that shared fund for shipowners. It does not pay to fix the owner's own ship. It pays the people the ship harms: an injured sailor, a cargo owner whose goods are ruined, a coastal town hit by spilled fuel. Because the members own the club, there are no outside shareholders taking a profit.

02

History

P&I clubs grew out of nineteenth-century Britain. Shipowners already insured their hulls, but laws such as the Fatal Accidents Act 1846 increased their exposure to claims for loss of life, and the insurance market was unwilling to cover such open-ended risks. In 1855 shipowners formed the Shipowners' Mutual Protection Society, the forerunner of today's Britannia club. Separate indemnity associations later covered liability for cargo, and by the 1870s the two forms of cover had been combined into the protection and indemnity model still used today.

03

How P&I clubs work

Each club is a not-for-profit mutual insurer run by a board elected from its members and administered by professional managers. Members pay contributions known as calls rather than premiums. A typical structure includes:

  • Advance calls. The main contribution, charged at the start of the policy year, which for International Group clubs begins on 20 February.
  • Supplementary calls. Extra amounts the club can demand if claims in a year turn out higher than expected.
  • Release calls. A payment a member may make when leaving a club, to settle its share of open years.

Club rules usually follow the "pay to be paid" principle, under which the member must settle a claim before being reimbursed, a rule upheld by the English House of Lords in 1990. In practice clubs often guarantee or handle claims directly. Clubs also issue the certificates that ships need under international conventions, known as blue cards, to prove they carry insurance for oil pollution, bunker fuel spills, wreck removal and passenger claims. Their claims handlers and underwriting teams give members loss-prevention advice on topics such as cargo care and crew safety.

04

What P&I covers and excludes

Cover is broad but not unlimited. Liabilities to the consignee or other owners of cargo under a bill of lading are a large part of it, as are liabilities to charterers under a charterparty. Collision liability is often split, with the hull insurer taking part and the P&I club the rest.

Important exclusions include:

  • Misdelivery. Delivering cargo without production of the original bill of lading is generally not covered, which is why carriers ask for a letter of indemnity before doing so.
  • Unapproved electronic documents. Since February 2010 the International Group has extended cover to cargo carried under an electronic bill of lading only when the system meets its approval criteria.
  • Sanctioned trade. Clubs will not pay claims where cover would breach sanctions, so they carry out sanctions screening of voyages, cargoes and counterparties, including checks against OFAC sanctions.

Other parties in the transport chain, such as a freight forwarder or terminal operator, usually buy their own liability insurance rather than joining a shipowners' club.

05

The International Group and pooling

The International Group of P&I Clubs is an unincorporated association of twelve clubs with a secretariat in London. Its members provide liability cover for about 90% of the world's ocean-going tonnage. Each club pays claims up to its own retention, currently US$10 million. Claims above that are shared among all twelve under the Pooling Agreement, and larger losses are covered by a group excess-of-loss reinsurance programme placed in the commercial market and partly retained through the group's captive, renewed every year.

This structure is a form of risk management that lets each club offer limits far beyond what it could hold alone. It also matters for trade finance, international trade and port access: banks, charterers and port authorities often require that a vessel be entered with an International Group club. Critics note that sharing claims ties well-run clubs to others' losses, and that ships unable to obtain such cover, including some tankers in the so-called shadow fleet, may sail with weak or unclear insurance.

Last updated 03 Nov 2026