S1, E2: Every year, more than 130,000 ships call at Europe's largest seaport. A total of 350 a day. With 140 million tons of container goods entering the port each year, "unwanted" cargo also gets through. Europol estimates that half of all cocaine circulating in Europe is smuggled through Rotterdam. Suspicious containers are a case for customs. 650 officers are on duty in the Port of Rotterdam every day.