From January 1st, 2019, 5,000 gross tonnage and above began collecting data on their fuel-oil consumption, under the mandatory data collection reporting requirements which enter into force in March 2018. The MARPOL Annex IV regulation on collecting and reporting of ship fuel oil consumption data requires ships of 5,000 gross tonnage and above to collect consumption data for each type of fuel oil they use, as well as other, specified data including proxies for transport work. More information