Set of terms for cargo insurance policies voluntarily adopted as standard terms by many international marine insurance organizations, including the Institute Of London Underwriters and the American Institute Of Marine Underwriters. Widest insurance cover is provided under 'Institute Cargo Clause A', a more restrictive cover under 'Institute Cargo Clause B', and the most restrictive cover under 'Institute Cargo Clause C.' These clauses have replaced the older 'All Risks,' 'With Average,' and 'Free Of Particular Average' clauses. Also called American Institute cargo clauses.