American Association of Port Authorities British Marine Aggregate Producers Association (BMAPA) Carribean Shipping Association Central Dredging Association (CEDA) Dredging Contractors of America (DCA) European Sea Ports Organisation (ESPO) Indian Port Association International Association of Dredging Companies (IADC) International Association of Ports and Harbours (IAPH) International Hydrographic Organization (IHO) International Marine Contractors Association (IMCA) International Maritime Organization (IMO) International Navigation Association - Association Internationale de Navigation (PIANC - AIPCN) International Seabed Authority Nederlandse Vereniging van Leveranciers van Bouwgrondstoffen (NVLB) / Dutch Association of Suppliers of Building Materials