Part 1 The process of delimitation: the evolution fo the criteria for the delimitation of the continental shelf - the Truman proclamation, the 1958 Geneva Convention; the evolution of the criteria for the delimitation of the EEZ - UNCLOS III; the interrelationship of the EEZ and Continental Shelf - the North Sea; Malta-Libya; the delimitation process - equitable principles, relevant circumstances, stage association; consequences of hte framework. Part 2 Relevant circumstances as proposed in practice: natural prolongation, geology and geomorphology; geography as a relevant circumstance; geographical factors; unusual geographical features; factors consequential upon geography; factors deriving from geo-political and legitimate interests; defence and security interests; navigational interests; economic factors; issues related to the presence of natural resources; pre-existing economic dependence - the aaargument in the Gulf of Main caaase; predominant interest; conduct; proportionality; third parties and delimitation.