Record requirements of operational compliance with NOx Tier III regulation in Emission Control Areas Full-text PDF:TEC- 1126 (593kb) Contact:Machinery Department Issued:30 Aug 2017 Amendments to MARPOL Annex VI regarding the recording of operational compliance with NOx Tier III regulations within Emission Control Areas (hereinafter referred to as "NECA"*) were adopted at the Sixty-ninth Session of the Marine Environment Protection Committee (MEPC69) held in April 2016. These amendments will enter into force on 1 September 2017. In accordance with the aforementioned amendments, ships installed with diesel engines subject to NOx Tier III regulations are required to have the tier and on/off status of any engines certified to both Tier II and Tier III, or certified to Tier II only, recorded in such logbook as prescribed by the Flag Administration upon each entry into and each exit from an NECA as well as in cases where there are any cha