Special Area
A3. Marine environmental legislation: MARPOL and its annexesDefinition
Sea area with stricter discharge regime under MARPOL Annexes I, II, IV, and V.
A special area under MARPOL is a sea area where stricter mandatory discharge methods apply because of its oceanographic, ecological, and traffic conditions. Special areas are designated under Annexes I, II, IV, and V, and include the Mediterranean, Baltic, Black, and Red Seas, the Gulfs area, and others. They are distinct from the Emission Control Areas designated under Annex VI for air emissions.
Source: MARPOL Annexes I, II, IV, V