1. Standard system SC Free lower end, suspended from surface vessel. This is a topologically simple system, with only two supernodes and one line. 1.1. Data group identifier SINGle RISEr SC 1.2. Boundary conditions ZU ALFU ZU: real: Z-coordinate of upper end \(\mathrm {[L]}\) ALFU: real: Angle of upper end from vertical \(\mathrm {[deg]}\) If the upper end later in the specification is allowed to rotate freely around the Y-axis, ALFU will be dummy. 1.3. Line and line type LINE-ID LINTYP-ID LINE-ID: character(8): Line identifier LINTYP-ID: character(8): Reference to line type identifier If only 1 alphanumeric string is specified, the string is interpreted as LINTYP-ID. ~ LINTYP-ID ~ The LINE-ID is taken as the line number (=1) Numbering of supernodes: - ISNOD = 1 is lower end (free) - ISNOD = 2 is upper end (specified position) 1.4. Support vessel reference Identification and location of support vessel. ~ IVES IDWFTR XG YG ZG DIRX ~ - IVES: integer, default: 1: Vessel number (IVES = 1) - IDWTFR: character (6), default: 'NONE': Identifier for WF motion transfer function - IDWFTR = NONE' means no transfer function specified - `XG: real: X position of vessel coordinate system referred in global system \(\mathrm {[L]}\) - YG: real: Y position of vessel coordinate system referred in global system \(\mathrm {[L]}\) - ZG: real: Z position of vessel coordinate system referred in global system \(\mathrm {[L]}\) - Confer Data Group E: Support Vessel Data. - DIRX: real: Direction of vessel X-axis. - See Location of support vessel coordinate system. Next data group is Line and segment specification.