P&I Clubs are mutual insurance associations that provide coverage for shipowners and charterers against third-party liabilities arising from ship operations. They cover broader risks like cargo damage, collisions, pollution, injuries, and loss of life that regular marine insurers are unwilling to cover. The document discusses key differences between P&I Clubs and marine insurers as well as cargo insurers. It also provides examples of risks covered by P&I Clubs and outlines provisions of the Hague-Visby Rules governing carrier liability.