York-Antwerp Rules
An international set of rules governing the adjustment of general average in marine losses, incorporated by reference into most ocean cargo and hull contracts.
What It Is
The York-Antwerp Rules are a set of internationally accepted rules that govern the adjustment of general average, the maritime principle that when a shipowner intentionally sacrifices part of the voyage (cargo, equipment, or expenses) to save the rest from a common peril, the loss is shared proportionally among all parties with a financial interest in the voyage, ship, cargo, and freight.
The rules were first promulgated in the 19th century and have been revised multiple times, with the 1994, 2004, and 2016 versions in active use depending on the bill of lading or charter party in question. They are not a treaty; they apply because contracts of carriage and marine insurance policies incorporate them by reference, and they coexist with national maritime law.
When a general average event occurs, an average adjuster is appointed to calculate each party's contribution based on the value of property saved. Cargo interests are typically required to post a general average bond and a cash deposit or insurer guarantee before cargo is released at destination. Marine cargo insurance ordinarily covers the insured's contribution to general average and the cost of the bond.
Why It Matters for Brokers
General average events are infrequent but high-friction. When a containership grounds, catches fire, or jettisons cargo, every shipper with cargo aboard becomes a party to the average adjustment, often for years. Cargo insureds who do not understand how York-Antwerp Rules operate can be surprised when their goods are held at port pending posting of a GA bond. Brokers placing ocean cargo coverage are expected to confirm that general average and salvage charges are covered, that the policy will issue the GA guarantee on behalf of the insured, and that the version of the rules in the carriage contract is consistent with the policy assumptions.
Real-World Example
A loaded containership suffers a serious engine room fire mid-voyage. The master hires salvors and the vessel is towed to a port of refuge. The shipowner declares general average. Each cargo interest is asked to sign a GA bond and post a deposit before containers are released. The cargo insured's marine policy covers the insured's contribution to general average and the salvage charges, and the cargo insurer issues a guarantee in lieu of cash deposit, allowing the cargo to move to its destination while the average adjuster works through the multi-year adjustment.
Common Mistakes
- 1Placing ocean cargo coverage without confirming that general average and salvage charges are covered in addition to physical loss or damage, leaving the insured exposed to GA contributions.
- 2Assuming the insurer will automatically issue a GA guarantee in lieu of cash deposit, when some forms require a request and supporting documentation before the guarantee is issued.
- 3Ignoring the York-Antwerp Rules version referenced in the bill of lading, which can affect what costs are recoverable and how interest and currency are handled.
- 4Failing to advise cargo insureds that general average adjustments commonly take several years to finalize, which produces friction when adjusters request additional documentation late in the process.
How brokerageaudit.com Handles This
The Document Pipeline indexes bills of lading, marine certificates, and policy forms so brokers can confirm that general average, salvage charges, and the applicable York-Antwerp Rules version are reflected in the bound coverage. Renewal Manager tracks open general average events tied to specific shipments through the multi-year adjustment cycle.