The two sister associations, CEDA and WEDA have organised their first joint international seminar on sustainable dredging and maritime construction. This event, attracting 110 experts from 10 CEDA and WEDA countries, took place on March 2nd 2009, in Panama City. The one-day event was sponsored and hosted by the Panama Canal Authority (ACP), the owner of one of the most exciting and prestigious hydraulic construction works, the Panama Canal Expansion Programme. The programme included presentations about widening and deepening of the existing canal, and the construction of 2 new sets of locks, which will double capacity and allow more traffic and longer, wider ships.