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Maritime

Measuring emissions from ships to ensure compliance with environmental regulations.

Emissions monitoring in the maritime industry

Shipping significantly contributes to global air pollution, making emissions enforcement essential.

Explicit enables authorities to verify compliance with MARPOL Annex VI and the EU Sulphur Directive (2016/802) through airborne surveillance of ships, supporting efficient enforcement of environmental regulations.

IMO MARPOL Annex VI logo
EU Sulphur Directive 2016/802 logo

What we monitor

Sulphur

Based on the SO2/CO2 ratio in the exhaust gas, the system can determine the sulphur content (% m/m) in the fuel being burned using emission factors prescribed by Marine Environment Protection Committee (MEPC).

  • ECA limit: 0.10 % FSC
  • Global cap: 0.50 % FSC
Sulphur emissions monitoring for the maritime sector.

NOx emissions

Based on the NOx/CO2 ratio in the exhaust gas and other parameters the system is able to identify possible NOx outliers under IMO’s NOx Technical Code Tier I-III.

  • Estimated average NOx in g/kWh
  • Tier III NTE threshold compliance
  • Tier I-II outlier identification

Methane slip

Using high-sensitive laser spectrometry, Explicit is also able to detect possible methane leakage issues from LNG vessels during at-sea operations.
  • CH4 concentration mapping (ppb)
  • Stand-alone sensor package
Methane slip monitoring for the maritime sector.

Researching methane emissions from ships in the FUMES project

In the Fugitive and Unburned Methane Emissions from Ships (FUMES) project, Explicit collaborates with the International Council on Clean Transportation (ICCT), and the Netherlands Organization for Applied Scientific Research (TNO), to collect the most comprehensive dataset of real-world methane emissions from LNG-fueled ships to date.

More about the FUMES project
Explicit drone in flight over the sea during the FUMES project