Where a river enters an ocean or sea, sediments transported by the river are deposited. As layer upon layer is deposited a platform of sediment, the delta, is built up and rises above sea level. At the seaside of the delta erosive forces like currents, tides and waves play a role. As long as the net rate of sediment supply exceeds the rate of removal a delta will build seawards.
The International Convention for the Control and Management of Ships’ Ballast Water and Sediments was adopted by IMO (International Maritime Organization) on 13 February 2004. Fifty-seven ballast water management systems were granted basic approval of active substance by IMO, among which thirty-seven systems were granted final approval. This paper studies the maximum allowable dosage of activ…