An App to analyse mooring system of a ship or barge with catenary lines and anchors. It finds equilibrium of the system considering position of the anchors, water depth of each anchor locations and line tension. It can also consider tension due to pipeline for installation of offshore pipeline. User interface made the analysis easy. Anchors can be positioned using drag and drop operation as well as the line tension. Buoys can be deployed on each lines to lift the lines as necessary. The line rise are shown graphically to inspect the vertical distance at any position using an 'inspector'. Anchor pattern drawing can be overlain to simulate on-paper mooring operation.