IMHA organizes an international congress of maritime history every four years. Since 1992 it has held successful congresses in:
Liverpool, UK (1992)
Amsterdam, the Netherlands (1996)
Esbjerg, Denmark (2000)
Corfu, Greece (2004)
Greenwich, UK (2008)
Perth, Australia (2016)
In 2020 the IMHA will host its 8th International Congress of Maritime History in Porto, Portugal.