16 inch Subsea Lazy S Riser with Mid Water Arch Orcaflex Simulation A lazy S configuration is similar to a catenary but has additional support provided at about midwater by an arch structure. This workshop has three (3) risers and an umbilical extending from a vessel to the seabed. All four lines pass over the same midwater arch. There are a range of arch designs used in the industry. This workshop represents a structure with two buoyancy floats with four gutters passing over the top. Note: We a