A Guide to the Collision Avoidance Rules is the essential reference to the safe operation of all vessels at sea. Published continuously since 1965, this respected and expert guide is the classic text for all who need to practically and legally understand and comply with 'The Rules'. This seventh edition includes the full text of the International Regulations for Preventing Collisions at Sea, with practical discussion of the implications of the rules included alongside all updates seen over the years, including the most recent amendments which came into force in December 2007.