York Antwerp Rules

York-Antwerp Rules. Optional rules of practice on the subject of general average for the assistance of shipowners, merchants, underwriters and average-adjusters for insertion in bills of lading, charter-parties and policies of insurance. The rules were adopted as a result of a conference of the Associa-tion for Reform and Codification of the Law of Nations at Antwerp in 1877. The Average Adjusters' Rules adopted by the English Association of English Average Adjusters have been drawn for the same purpose.