The Scheme

The Clean Shipping Index (CSI) is a cost effective and simple to use application which allows members to assess and lower their environmental impact from maritime transportation. The information is collected in the Clean Shipping Index Database that members of the Clean Shipping Network have access and reward good environmental performance with economic incentives. The members of the Clean Shipping Network aim to contribute to environmental development of the maritime industry.


Which environmental parameters shall be verified?

On behalf of Clean Shipping Index, we can provide verification services for the environmental parameters emitted and produced from your fleet. Data such as greenhouse gases, sulphur oxides, nitrogen oxides, chemicals wastes and scrubber water, harmful to people and the marine environment are enter to the index and verified by our Organization.


What are the benefits for your vessel and company?

  1. Differentiated port fees – The ports listed below use Clean Shipping Index as a tool for differentiating port fees:
    • Port of Brofjorden;
    • Port of PetroPort;
    • Ports of Stockholm;
    • Port of Gothenburg;
    • Port of Gävle;
    • Port of Prince Rupert;
    • Port of Vancouver; and
    • Port of Turku.
  2. Differentiated fairway dues in Sweden – The price list from the Swedish Maritime Administration is available in regulation 2019:3 at;
  3. Access to the CSI database with more than 2400 vessels; and
  4. Use the CSI Label as marketing towards your customers.

Potentially lower interest rate for newbuildings with CSI as a practical risk management tool

For more information about specific benefits for vessels with certified CSI class and members of Clean Shipping Index, download the presentation below.


How does it work?

The Clean Shipping Index tool consists of a questionnaire of 25 basic questions on environmental performance of ships. They all go beyond existing rules and regulations and cover existing ships of different types. You can fill in vessel specific data of environmental parameters through an online questionnaire which is accessible via You can obtain a Clean Shipping Index account by contacting the Clean Shipping Index project management through

The Clean Shipping Index questionnaire covers general information about the participating shipping company and its vessel specific data.


Verification procedure

The graph bellows outlines the procedure to be followed for successful verification.

Data Sharing

The verification shall be performed by accredited verification companies following the guidelines of Clean Shipping Index. The results of the Verification will be uploaded into the Database and a Certificate of Verification, valid for maximum 3 years, will be issued online.  Emissions of CO2, SOx and Particulate Matter need to be verified annually through an office audit.

You can view the scores of your vessels, also in comparison to vessels of other shipping companies. You may thus compare the performance to other vessels of the same type and identify areas for improvement. Members who have access to the database all sign a letter of intent and a confidentiality agreement. The data can be viewed by the members who wish to provide economic incentives for clean shipping: cargo owners, forwarders, ports, authorities and providers of clean technology. Banks and investors may use the Clean Shipping Index as guidance when investing in new ships. By submitting the data into the database, ship owners approve of sharing the data with the Clean Shipping Network members.



Clean Shipping Index website
Visit CSI website for further information
DBS Accreditation by Clean Shipping Index
Read our full press release
What’s in it for you!
Download the guidelines into how the scheme works