Following their introduction in January 2000, the class notations CLEAN and CLEAN DESIGN have attracted more than 110 ships. Of these, 70 are now sailing with CLEAN class notation. The stricter CLEAN DESIGN notation has attracted 10 vessels, of which eight are sailing. The ships are of all types and sizes, ranging from supply vessels to passenger and ro-ro vessels through to ULCCs.
Design and construction alone will not ensure best environmental practice. The thinking needs to be incorporated in crew's attitudes and practices. For this reason CLEAN and CLEAN DESIGN notations include requirements for operational procedures, such as log-books etc., in addition to technical design and built-in features. For the initial projects, in particular, this presented some challenges regarding the split of responsibilities for operational procedures. However, as the yards and owners have gained experience the roles and responsibilities have become clearer.
Recognising that some ship types are different from others with respect to defining the term 'environmentally friendly', DNV will develop specific ship type rules for environmental class in the near future.
For more information contact:
Eivind.Haugen@dnv.com