The combined corruption perceptions index score is calculated for every vessel in Starboard. The combined corruption perceptions index score uses the Corruption Perceptions Index (CPI) and daily updates of port visits to indicate whether a vessel has a tendency to visit countries with higher or lower perceived levels of public sector corruption. Higher scores suggest visits to countries with lower public sector corruption.

A vessel’s combined corruption perceptions index score can be viewed in the port visits section of the vessel report with a breakdown of countries or territories visited and their corresponding CPI scores. The combined corruption perceptions index score is the average of the CPI score of the countries or territories it has visited weighted by the number of visits to each country or territory. Countries or territories with no CPI scores are excluded from the calculation.

The combined corruption perceptions index score is updated daily for all vessels, based on our history of port visits from May 2020.

The CPI, published by Transparency International, ranks 180 countries and territories around the world by their perceived levels of public sector corruption. Each country or territory is given on a scale of 0 (highly corrupt) to 100 (very clean). CPI scores from 2023 are used in Starboard.