Demands on reporting and communication of the sustainability performance within a company as well as externally and how the demands on continuous improvement are fulfilled, has led to a development and also standardisation of sustainability indicators and indices. In shipping, like in all sectors, numerous indices or reporting systems have been developed and are used for various purposes. The present report is a pre-study with a review on existing indices in the shipping sector, and an outlook to other areas, followed by a discussion on possible development paths of more comprehensive sustainability indices. Den här rapporten finns endast på engelska. Svensk sammanfattning finns i rapporten.