Sea — Maritime boundaries — Delimitation — Single maritime boundary for all purposes — Islands belonging to one State off coast of other State — Identification of relevant coastlines in delimitation area — Ratio of coastlines — Whether coastlines opposite or adjacent — Identification of relevant principles and criteria to be utilized — Capacity of all coasts to generate offshore zone — Whether qualified by competing coasts — Whether qualified by application of principle of proportionality or by political status of island — Relevance of ancient treaties ceding territory — Enclave and frontal projection theories — Relevance of equidistance and contiguous zone rules — Combination of different methods with reference to different segments of delimitation line — Whether demarcation of broad continental shelf beyond 200-mile limit appropriate — Relevance of fisheries and mineral resources — Equity of result — Whether areas allocated disproportionate