The iShip Index is a quarterly weighted indicator which gauges the health of the Irish maritime industry and the wider economy. Created by the Irish Maritime Development Office, the index is comprised of five separate indices, representing the main maritime traffic categories moving through ports in the State: Lo/Lo, Ro/Ro, Dry Bulk, Liquid Bulk & Break Bulk.  

• The iShip Index is a weighted indicator comprised of five separate indices, representing the main maritime freight categories moving through Ports in the State: Lo/Lo, Ro/Ro, Dry Bulk, Liquid Bulk & Break Bulk.
• The Lo/Lo Index is comprised solely of laden traffic.
• As all three bulk segments are not traditionally measured in tonnage, Lo/Lo and Ro/Ro traffic have been converted into tonnage terms, enabling the index to be built from a common denominator.
• The following ports have been included in the index: Port of Cork, Drogheda Port, Dublin Port, Dundalk Port, Dún Laoghaire Harbour, Galway Harbour, Greenore Port, New Ross Port, Rosslare-Europort, Shannon Foynes Port, Port of Waterford and Wicklow Port. Bantry Bay has been excluded as its throughput is predominantly of a transhipment nature.
• All data is derived from the individual port companies and subject to a one-year revision period.
• The base period is Quarter 1 2007 at which time all indices equal 1000.

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