Article 76 of the United Nations Convention on the Law of the Sea lays down the rules and regulations governing claims to a continental shelf beyond 200 nautical miles for the 130 coastal States and entities that have ratified or acceded to it. This book is designed to help those coastal States implement the provisions of Article 76, covering the technical issues involved and explaining the interface between the legal concepts contained within the article. It covers all aspects that will have to be considered by a coastal State if it wishes to make a claim under the Convention, including the characteristics of continental margins, distance determination, bathymetric data collection. geological and geophysical techniques, and boundary conditions.

The legal and scientific aspects of continental shelf limits are of growing importance to those concerned with the international law of the sea. It is rare that the current thinking of both leading lawyers and scientists are brought together in one volume. Among the topics raised in this volume are: geomorphology and geology; ridge issues; Commission on the Limits of the Continental Shelf; shelf resources and current issues, such as the outer limit of the continental shelf in the Arctic Ocean, evaluating U.S. data holdings relevant to the definition of continental shelf limits, delimiting China’s continental shelves and future directions of the International Seabed Authority. Lastly, the Under Secretary General for Legal Affairs, United Nations, H.E. Hans Corell, provides a strategic overview on the challenges in implementing international ocean governance. Another unique feature of the volume is that a CD is placed in the back cover containing visual materials not included in the printed text.

A. The Outer Limits of the Continental Shelf The 1982 United Nations Convention on the Law of the Sea (herein- ter the “Convention”) marks the beginning of a new era in the law of 1 the sea. The negotiations for this treaty at the Third United Nations Conference for the Law of the Sea (hereinafter “UNCLOS III”), lasted for nine years, from 1973 to 1982. The Convention regulates the principal aspects of international oceans affairs. It establishes and fixes the limits of maritime zones, provides for the rights and duties of states in these zones, establishes the law app- cable in the international seabed area on the basis of the principle of common heritage of mankind, imposes obligations on states to protect the marine environment, and provides for the means of dispute sett- ment. One of the most contentious and divisive issues at UNCLOS III were the outer limits of the continental shelf. Previously, in the 1958 Con- 2 vention on the Continental Shelf (hereinafter the “1958 Convention”), no limits were established for the continental shelf. States were allowed to claim areas of continental shelves based on their capacity to exploit the mineral resources of the shelf. The legal framework in the 1958 Convention would obviously conflict with the principle of the common heritage of mankind. Delegates realized that limits have to be est- lished, but up to where and on the basis of which principles, was a c- tentious question.

As the world’s coastal states go about dividing up the ocean floor, the work of the Commission on the Limits of the Continental Shelf plays an increasingly important role. The Commission on the Limits of the Continental Shelf: Law and Legitimacy examines the Commission from two different but interrelated perspectives: a legal analysis of the Commission’s decision-making; and a study of normative legitimacy related to the Commission and its procedures. Insights into the history of the development of the concept of the continental shelf in the law of the sea are offered, including an explanation of how the institutionalized method for ascertaining continental shelf limits in the UN Convention on the Law of the Sea came into being. Through a deep-ranging analysis of the Commission and its work, the book introduces a framework for assessing best practices, and will serve as a useful reference for academics, scientists and policymakers alike.

New Knowledge and Changing Circumstances in the Law of the Sea focuses on the challenges posed to the existing legal framework, in particular the United Nations Convention on the Law of the Sea, and the various ways in which States are addressing these challenges.

Under the United Nations Law of the Sea Convention, States have sovereign rights over the resources of their continental shelf out to 200 nautical miles from the coast. Where the physical shelf extends beyond 200 nautical miles, States may exercise rights over those resources to the outer limits of the continental shelf. More than 80 States may be entitled to claim sovereign rights over their continental shelf where it extends beyond 200 nautical miles from their coast, and the Commission on the Limits of the Continental Shelf is currently examining many of these claims. This book examines the nature of the rights and obligations of coastal States in this area, with a particular focus on the options for regulating activities on the extended continental shelf. Because the extended continental shelf lies below the high seas, the area poses unique legal challenges for coastal States that are different from those faced in respect of the shelf within 200 nautical miles. In addition, the United Nations Convention on the Law of the Sea imposes some specific obligations that coastal States must comply with in respect of the extended continental shelf. The book discusses the development of the concept of the extended continental shelf. It explores a range of issues facing the coastal State in regulating matters such as environmental protection, fishing, bioprospecting, exploitation of non-living resources and marine scientific research on the extended continental shelf. The book proposes a framework for navigating the intersection between the high seas and the extended continental shelf and minimising the potential for conflict between flag and coastal States.

In Establishing Continental Shelf Limits Beyond 200 Nautical Miles by the Coastal State: A Right of Involvement for Other States?, Signe Veierud Busch undertakes a study of all coastal State submissions to the Commission on the Limits of the Continental Shelf and asks under which circumstances and to what extent States other than the coastal State may intervene in the process of establishing final and binding continental shelf limits. After analysing relevant provisions in the UN Convention on the Law of the Sea and the Commission’s Rules of Procedure compared with the practice of States and the Commission, Busch raises the overall question if the possibility for other States to block the work of the Commission may in fact be undermining the mandate and functions of the Commission.

In The Continental Shelf Beyond 200 Nautical Miles, Bjarni Már Magnússon explores various aspects of the establishment of the outer limits of the continental shelf beyond 200 nautical miles and maritime boundary delimitations. Special emphasis is laid on the interplay between these processes and the role of coastal States, the Commission on the Limits of the Continental Shelf and international courts and tribunals in this regard. Magnússon convincingly argues that despite the possibility for tension to arise the relationship between the relevant institutions and processes is clear and precise and they together form a coherent system where each separate institution plays its own part in a larger process.

The lack of international conventional law governing the operational aspects of continental shelf activity may be characterized as unfinished business of the UN Convention on the Law of the Sea. The Convention, adopted in 1982, generally addressed the issue but did not consider more detailed development of the legal regime for the continental shelf. In The Regulation of Continental Shelf Development: Rethinking International Standards, leading experts from around the world identify and explore a multitude of unresolved legal concerns related to the continental shelf. The current state of continental shelf activities is explored through the following lenses: • Contemporary uses, including an overview on offshore wind energy in the EU, an analysis of the use of submarine cables under UNCLOS, and a discussion of the varied potential for mining marine materials; • Emerging challenges, such as ISA seabed mining standards, the recent ITLOS decision regarding the Bay of Bengal, and the role of the IMO in establishing safety standards for transboundary effects of oil pollution for offshore platforms; • Comparative best practices in environmental regulation; • Probabilistic risk assessment, with a thorough definition of PRA and a critical examination of continental shelf disasters; • Decommissioning offshore installations and structures, including an overview of the global regime as particularly provided in Articles 60(3) and 80 of UNCLOS; • Liability and compensation; and finally, • Unfinished business on UNCLOS III. The varied voices of experts collected within The Regulation of Continental Shelf Development: Rethinking International Standards offer a timely understanding of past, present, and future issues related to the continental shelf. The volume is a must-read for all those interested in environmental law and the law of the sea.