1. Department
of Environmental Sciences, Fisheries and Environmental Management
Group, Kotka Maritime Research Center, University of Helsinki, Keskuskatu
10, FI-48100 Kotka, Finland
2. School
of Engineering, Department of Applied Mechanics, Kotka Maritime Research
Centre, Aalto University, Keskuskatu 10, FI-48100 Kotka, Finland
3. Centre
for Maritime Studies, Kotka Maritime Research Centre, University of Turku, Keskuskatu 10, FI-48100 Kotka, Finland
4. Department
of Environmental Sciences, Fisheries and Environmental Management
Group, University of Helsinki , P.O. Box 65, Helsinki FI-00014, Finland