Ropes and wires have many applications in the offshore industry including towing, mooring and winching. The line type wizard can derive line type data to represent five different rope structures: Nylon (8-strand Multiplait); polyester (8-strand Multiplait); polypropylene (8-strand Multiplait); 6×19 wire rope with fibre core; and 6×19 wire rope with wire core. The derivation formulae used by the wizard are detailed on the following pages.
Most of the calculations of the derived line properties are based on data from a catalogue published by Marlow Ropes Ltd (1995). All quantities are expressed as a function of the rope's nominal diameter $d$. This documentation uses the SI units system, so $d$ is in metres here, but OrcaFlex automatically adjusts the formulae to match the units in use in the model.
| Warning: |
The values generated by the wizard are approximate, and are intended as first estimates for preliminary use. They are offered in good faith, but due to variations in properties between products they cannot be guaranteed. We recommend that you use suppliers' data where this is available. |
