Bank of Actions

Bank of Actions

Are you seeking examples or inspiration for water protection? There are plenty of potential actions to choose from! The Bank of Actions will provide your organisation with concrete ideas and examples of water protection activities implemented by organisations in the Baltic Sea Challenge network. You can browse these according to the theme, type of actor, country, year or keyword.

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Agile experiment: plastic waste in passenger ships food waste

Actor: Bioharbour Ltd   ●   Year: 2020   ●   Address:

Bioharbour Ltd is Helsinki-based startup company and was chosen to the Baltic Sea Challenge Speedy Experiments in 2020 to analyse the composition offood waste on passenger ships. The hypothesis was that there is not only nutrients but also plastics in the foodwaste that could be prevented from entering the sea. 


Bioharbour Oy concluded that approximately 0.2 kg of macroplastics can be found in every tonne of food waste. It is probable that also microplastics could be found and the total amount of plastic would thus be higher. In proportion to inbound international cruise traffic during a normal year in Helsinki (c. 300 ship visits, 605 000 passengers and 300 000 crew members), international cruise ships are estimated to dump roughly 4 tonnes of macriplastic in the sea. 

International cruise ships visiting Helsinki have the opportunity to leave their food waste in the Port of Helsinki, but some ships dump the waste in the sea in international waters instead. In the context of regular passenger traffic, food waste is processed sustainably as part of other waste management arrangements, to ensure that none of it ends up in the sea. 


Bioharbour is in the process of developing a new method of producing carbon-neutral energy from the food waste and other organic waste matter (20 000 t annually) generated by cruise ships to ensure that even the plastics are recycled for further use.

Background information

Four experiments to combat marine litter in the Baltic Sea received altogether 50 000 euros of support from the City of Helsinki. The experiments were conducted during 2020 in Helsinki’s coastal and sea areas to find innovative new means to prevent plastic waste in the Baltic Sea. 

Watch the video presenting Bioharbour's speedy experiment

Read the news on the results of all of the experiments (City of Helsinki, 20 Jan 2021)


Further information

Name: Mikko Heikkilä   ●  Email: mikko.heikkila(a)   ●