The angle of the confluence of Shaping River and Yu River is small,which is unfavourable for ships to turn and navigate,especially for ships entering and leaving Shaping River from the upper reaches of Yu River.In addition,a large number of residential houses are distributed on the islands on the right bank of the channel at the confluence,which makes land acquisition and demolition difficult.How to balance the navigation conditions with less land acquisition and less excavation is a difficult point in the channel route layout of this section.To achieve good seaworthiness and safety of ships in the canal channel,two channel routes are arranged according to the principle of straight line as the main and curve as the auxiliary.Through the comparison of technology and economy,the channel line with safe navigation,low construction difficulty and low engineering cost is selected.Furthermore,the representative ship type is selected and electronic channel chart is established for the ship manoeuvring simulation test.The ship model test shows that the channel width and turning radius of the optimised design meet the requirements of navigational safety.