The objective of the remote monitoring from a mobile platform is to evaluate if ships comply with the 0,10 % sulphur limit for marine fuels, which has been in force in emission control areas for SOx since 1.1.2015.
The equivalent sulphur content of the fuel used by individual ships shall be calculated based on measured emissions of sulphur dioxide (SO2) and carbon dioxide (CO2) and combined with information on identity, position and next port of call for each ship taken from the AIS system (see Section 5). The observations shall be reported to the Danish Environmental Protection Agency (EPA). The intention is to report valid observations indicating non-compliance to the THETIS-EU database and by email to the responsible authority of the next port of call. This will enable port state authorities to target sulphur inspections of ships towards ships with a high risk of non-compliance.