The technical delimitation of a modern equidistant boundary

Abstract

Delimitation of maritime boundaries represents a recent state activity. The main impetus stems from the 1958 Geneva Conventions on the Territorial Sea … and on the Continental Shelf. State practice since 1958 has shown a marked preference for the equidistance principle for maritime boundary delimitation. At first many of these limits were geometrically constructed on existing nautical charts or on specifically designed small‐to medium‐scale maps. With increasing ability to exploit marine resources and the associated need to delimit boundaries farther from the baseline, inequities have developed as a consequence of map projections utilized, differences in horizontal and vertical datums, and so on. This paper discusses the principles behind, and the development of, conventional techniques of equidistant boundary delimitation; illustrates the errors that may result; and points out means, through modern computer technology, to compute equitable, equidistant maritime boundaries at great distances from the baselines.