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Service Results

CleanSeaNet provides end-users with more than 3,000 satellite images per year and is integrated into national oil spill response chains supplementing the existing surveillance systems at national or regional level, strengthening Member State responses to illegal discharges, and supporting response to accidental spills.

The deterrent effect of the satellite-based oil spill monitoring service is clear: over most of the past decade the overall trend has been a year-on-year reduction in the number of possible oil spills detected per million sq. km monitored. The increase in awareness of maritime pollution is visible since the beginning of the service; not only maritime laws are stricter, but there is also a significant improvement of national authorities’ action capabilities towards polluters.

2017 CSN Detections Statistics2017 CleanSeaNet detection statistics: dots in the map represent the spills which have a higher detection confidence level (in red) and a lower detection confidence level (in green).

As CleanSeaNet is linked to national and regional response chains, interaction with user communities in the coastal States is important for ensuring the best use of the service and identifying improvements to be made. CleanSeaNet User Group meetings are organised regularly by EMSA. These events are an opportunity to foster better communication with authorities using CleanSeaNet in the coastal states and get feedback on the user requirements, and on weaknesses and strengths of the service from their perspective. The Agency also provides regular trainings at EMSA’s premises or on-site.

Service providers

EMSA’s Earth Observation services resort to several providers (contractors), which acquire, process, analyse and deliver the requested imagery and results to EMSA Data Centre. CleanSeaNet then make the service results available to Member States through the dedicated platforms and generates Alert Reports to the end-users.

In total, CSN has seven SAR and Optical service providers, namely CLS, KSAT, MDA, EDISOFT, e-GEOS, Airbus DS and EUSI. These companies operate a network of ground stations distributed worldwide to ensure near-real time delivery.


cleanseanet groundstations



10 key facts about the CleanSeaNet service

CSN Anniversary publication 2 01