On 19 November 2012, the International Court of Justice gave its judgment concerning the Territorial and Maritime Dispute between Nicaragua and Colombia. This judgment includes several important issues which need serious consideration, such the as legal status of maritime features, the interpretation and application of Article 121 of the UN Convention on the Law of the Sea, the methodology of maritime delimitations, the role of proportionality in maritime delimitations, and the impact of the judgment upon third states and effect of Article 59 of the ICJ Statute. Focusing on these issues, this contribution aims to analyse the judgment of 2012 from a viewpoint of the international law of the sea, in particular, the law of maritime delimitation.