The Maritime Potential Index (MPI) measures the geographical dimension of the natural resource “proximity to seas and oceans”. It shows the natural potential of a nation, state or region to make use of this resource. A landlocked state has no natural potential to use maritime resources, whereas the potential of an island state or a state with a long coast line should be very high. The Maritime Economy Index (MEI) combines various typically maritime industries like fisheries, shipping, ship building, harbours and other economic fields. Whether or not the potential is utilized is measured by the CenPRIS Ocean Index (COI).