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Average torque factors for the following rope constructions are : 35xK7 and 40xK7 torque factor 0.0080 55xK7 and 67xK7 torque factor 0.0050 Torque calculation The formula to calculate the torque of a certain rope is: applied load x torque factor x diameter of rope = absolute torque Example: the applied load 1500kN (20% of its MBL) x 0.0080 (torque factor) x 96 mm (d) = 1.152 MN. Traction winches The A&R winch ropes are commonly stored on a storage drum onboard the vessel. To generate the power to abandon and recover the pipe, traction winches are applied. A twin drum winch device, requiring precise diameter/groove ratios, stabile rope constructions, superior rope bending fatigue properties, excellent resistance to abrasion and rope crushing. ALUMAR ® aluminised ropes The aluminizing of steel wire and steel wire ropes is made by KISWIRE under the brand name ALUMAR ® . We apply this technology for about 10 years now, it started in 1999. Initially, the ALUMAR technology was developed for products applied in the aviation and car industry – the core demand was to extend the life time of the wires by sustaining the steel wire quality ! Apart from many different kinds of improvement we could establish in this respect, it was obvious that an important improvement was to be made by protecting the wires from corrosion as long as possible. The ALUMAR ® zinc/aluminium coating was developed as an alternative for the regular galvanizing of wire. Many tests have been done in the meantime, showing that the ALUMAR ® wires stay corrosion free 3,8 times longer than galvanized products. Third party Salt Spray Tests are available. The offshore industry, both oil and gas as well as fishing, could benefit from ALUMAR ® ropes substantially, as sea water is a corrosive environment.