The rivers of Vietnam has a large load of sand, through many years of shallow water in estuaries, sedimentation usually ship channel, the main reason by the waves. The effects of waves make the sediment move, at the location of the ship channel because depth greater than the surrounding groundshould be shipping channel sedimentation. The contents of the article presents methods of calculating sediment flows based on changes in vessel channel carrying capacity of the sand wave propagation along the beam.