Regular line type A line type contains the following properties referred to in a line description Sequence of segments with homogeneous cross sectional properties. Cross sectional component type, length and number of elements to be used for finite element discretization are specified for each segment Nodal components for modeling of clump weights, buoys, swivels and hinges etc. can be specified at segment intersections. Fluid component (FLUID) for description of possible internal fluid flow. A line is a linear structural element between two supernodes which is identified by a line type. This means that a line type can be referred several times in the system topology description, which is convenient for modeling of systems with several identical lines (e g anchor systems, parallel coupled riser system etc.).