The main achievement of the project was the development of a Green North Sea Docks decision-support tool (DST). The DST is a tool developed to assists dockyard environmental managers and environmental protection administrations. Therefore an assessment strategy which introduced elements of the concept of sustainability to compare alternative treatment processes, i.e. the environmental assessment based on a life-cycle approach and eco-toxicological tests were carried out. The outcome was that considering a wide range of environmental impacts caused by treatment process is an innovative way of assessing environmental problems in the dockyard sector. That had a large value for planning technological improvements to existing operation or treatment technologies. Achievements: The main achievement of the project was the development of a Green North Sea Docks decision-support tool (DST). The DST is a tool developed to assists dockyard environmental managers and environmental protection administrations. Therefore an assessment strategy which introduced elements of the concept of sustainability to compare alternative treatment processes, i.e. the environmental assessment based on a life-cycle approach and eco-toxicological tests were carried out. The outcome was that considering a wide range of environmental impacts caused by treatment process is an innovative way of assessing environmental problems in the dockyard sector. That had a large value for planning technological improvements to existing operation or treatment technologies.