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⚓ '''Institute War and Strikes Clauses''' are standardized contractual provisions developed by the Institute of London Underwriters (now maintained under the auspices of the [[Definition:Lloyd's Market Association (LMA) | Lloyd's Market Association]] and the [[Definition:International Underwriting Association (IUA) | International Underwriting Association]]) that define the scope of [[Definition:Marine insurance | marine insurance]] coverage for losses arising from war, civil war, revolution, rebellion, insurrection, strikes, riots, and related perils. These clauses exist because standard marine cargo and hull policies — governed by the companion [[Definition:Institute Cargo Clauses | Institute Cargo Clauses]] and [[Definition:Institute Time Clauses | Institute Time Clauses]] — explicitly exclude war and strikes risks, creating a gap that must be filled by a separate, specifically rated cover. The clauses come in several variants tailored to cargo, hulls, and freight interests, each delineating the precise perils covered, the geographical and temporal limits of coverage, and the circumstances under which cover may be cancelled or modified at short notice.

🔧 Coverage under these clauses typically attaches to losses caused by hostile acts by belligerent powers, mines, torpedoes, derelict weapons of war, and — in the strikes variant — damage caused by strikers, locked-out workers, or persons acting from political motives. A critical operational feature is the cancellation provision: [[Definition:Underwriter | underwriters]] reserve the right to cancel war risks cover at short notice, often as little as seven days, in response to escalating geopolitical tensions or the designation of specific areas as high-risk zones. The [[Definition:Joint War Committee (JWC) | Joint War Committee]] in London maintains a listed areas register that identifies regions where additional [[Definition:Premium | premiums]] apply, and this list is closely watched by shipowners, cargo interests, and their [[Definition:Insurance broker | brokers]] worldwide. Although the clauses originate in the London market, they are incorporated by reference into marine policies issued across major insurance hubs including Singapore, Hong Kong, Tokyo, and the Nordic markets, giving them genuinely global reach. In practice, war risk [[Definition:Premium rate | premium rates]] can spike dramatically in response to conflicts — as seen during tensions in the Persian Gulf, the Black Sea following the Russia-Ukraine conflict, and the Red Sea disruptions — making this cover one of the most price-volatile segments of the marine insurance market.

🌍 The enduring importance of these clauses lies in the way they allocate some of the most unpredictable and catastrophic risks in global trade between [[Definition:Insured | insureds]], commercial [[Definition:Insurance carrier | insurers]], and, ultimately, sovereign war risk schemes that serve as backstops when private capacity retreats. For shipowners and cargo interests, purchasing war and strikes cover is not optional in practice; banks and charterers routinely require it as a condition of financing or chartering vessels. For insurers and [[Definition:Reinsurer | reinsurers]], the clauses provide a well-understood framework for pricing and managing exposures that would otherwise be uninsurable on a blanket basis. The standardized wording also reduces disputes by offering decades of judicial interpretation across English, Singaporean, and Hong Kong courts, giving market participants a high degree of legal certainty. As geopolitical instability reshapes global shipping routes, the Institute War and Strikes Clauses remain one of the foundational building blocks of the [[Definition:Marine insurance | marine]] and [[Definition:War risk insurance | war risk insurance]] ecosystem.

'''Related concepts:'''
{{Div col|colwidth=20em}}
* [[Definition:War risk insurance]]
* [[Definition:Marine insurance]]
* [[Definition:Institute Cargo Clauses]]
* [[Definition:Joint War Committee (JWC)]]
* [[Definition:Political risk insurance]]
* [[Definition:Hull insurance]]
{{Div col end}}

Definition:Institute War and Strikes Clauses - Revision history

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