Part B Commentary on Judgments and Awards in Maritime Boundary Delimitation Disputes, 22 Peru v. Chile (Judgment of the International Court of Justice, 27 January 2014)
Stephen Fietta, Robin Cleverly
- Coastal states — Delimitation — Straits — Territorial sea — UNCLOS (UN Convention on the Law of the Sea)
This chapter looks in detail at a case which dealt with a dispute between Peru and Chile in relation to the course of their maritime boundary in the South Pacific Ocean. The coastlines of Peru and Chile are adjacent. Peru argued that no prior agreed maritime boundary existed between the two countries and, in its Application, requested the court to plot a boundary line using the equidistance method in order to achieve an equitable result. After describing the case, the chapter looks at the significance of it for international law. This is the first decision by the International Court of Justice (ICJ) recognizing the existence of a maritime boundary established by ‘compelling’ evidence of a tacit agreement between the coastal States.