Location The model location defines values for physical constants like acceleration of gravity and water density. It also defines the water depth used when calculating wave kinematics. Under the Location object contains a Sea Surface and a Flat Bottom. In addition one or more Infrastructure Bodies may be added. These objects are a part of the 3D visualization, but does not affect the simulation itself. 1. Global orientation This input is only relevant when using the Metocean Task. The initial navigation frame is a North West Up (NWU) frame of reference. The origin of the frame is the location of the global analysis frame. The X-axis points north, the Y-axis points west, and the Z-axis points up. The relative compass angle is the angle in anti-clockwise direction between the north direction and the direction of the global analysis frame of reference. Modelling Environment