Costa Cruises, the largest Italian travel group and
‘Green Plus’ is the highest notation assigned by RINA Group to ships that are environmentally compliant. ‘Green Plus’ is a voluntary notation certifying compliance with environmental protection standards that are far stricter than the provisions of the international MARPOL Convention. ‘Green Plus’ takes account of some 11 different pollution sources for vessels (including garbage, gray water, sewage, oily wastes from machinery spaces, CO2, ozone depleting substances, greenhouse gases, particulate matter, sulfur oxides, nitrogen and ballast water) and lays down specific restrictions for each one.