An account of the underlying law and the practical rules which govern the adjustment of rights and liabilities between parties to a maritime adventure when extraordinary measures have been incurred for the benefit of the common adventure. The second edition incorporates international case law developments to bring the text up to date and analyses the revision of the basic practical rules underlying general average adjustment internationally for only the second time in 30 years. It is essential for all those involved with maritime affairs to understand the implications of these new rules and how they fit with existing law and practice.