Cruise ships are still dumping most of their sewage into the Baltic Sea

This cannot be for real! Cruise ships are still dumping most of their sewage into the Baltic Sea! We should ban them from the Baltics unless they sign up to empty their shit into the free waste collection containers in the ports. What can be done?
This is what it looks like: http://www.hs.fi/paakirjoitukset/a1438397990342

15 August 2015
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