Clause in the Institute Cargo Clauses and in the International Hull Clauses reminding the insured to act at all times as though uninsured. The clause makes sue and labour charges recoverable from the marine insurer in addition to any admissible claim even a total loss claim as it is deemed by the Marine Insurance Act, s.78(1), to be a supplementary contract.
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A provision in marine insurance obligating the assured to do things necessary after a loss to prevent further loss and to act in the best interests of the insurer.