Which type of fiber core rope has more flexibility compared to IWRC?

In the context of fiber core ropes, the type known as WSC (Wire Strand Core) indeed offers greater flexibility compared to an IWRC (Independent Wire Rope Core). The reason for this increased flexibility stems from the construction of WSC ropes, which incorporate a core made of strands of wire laid together. This design allows the rope to have better bending characteristics and makes it more adaptable when wrapping around pulleys or when subjected to dynamic loads.

WSC ropes can handle the same or greater loads than IWRC while providing the operator with better handling properties. The wire strands allow for more movement and less stiffness in comparison to the rigid structure of an IWRC, resulting in improved maneuverability on job sites.

In contrast, the other options either may not provide the same degree of flexibility or serve different functional purposes. For instance, steel core ropes are typically stiffer and intended for heavy lifting, while hemp and manila ropes are made from natural fibers, which, although flexible, do not generally match the performance capability or the advanced flexibility of WSC.