In 2017 Mljet National Park is expecting first of three electrical boats for transfering the visitors on the Great lake. In next two years, two more are expected to arrive and that way Mljet National Park will exclude all other boats which are using fossile fuels. Croatian gouverment gave the green light for signing contract of buying 3 electrical tourist boats worth 9,9 million kunas. This project is a part of the bigger project “Mljet-the First green island in the world”. More about it can be found on following link:
http://www.total-croatia-news.com/item/14110-croatian-company-to-build-electric-boats-for-mljet-national-park