Amending Directive 2002/59/EC. The purpose of this Directive was to make a number of amendments in order to improve Directive 2002/59/EC, including: the replacement of Article 12(1), point (b) on the subject of substances referred to in Annex I to the MARPOL Convention; the replacement of Annex II (Requirements applicable to on-board equipment) and; the replacement of Annex IV (Measures available to Member States in the event of a threat to maritime safety and the protection of the environment).