Which type of rope is considered the most flexible among wire ropes?

The most flexible type of rope among wire ropes is the tiller rope. Tiller ropes are designed to provide enhanced flexibility, which makes them suitable for applications requiring easy maneuverability and bending. This flexibility is beneficial in various contexts such as in the operation of small boats for steering or in other environments where tight bends and versatile movements are necessary.

In contrast, steel cables are typically rigid and are known for their strength rather than their flexibility. While polyester rope may offer some degree of flexibility in different materials, it does not classify as a wire rope, which further differentiates it from tiller ropes. Chains, on the other hand, are designed for load-bearing applications and lack the flexibility associated with standard ropes. Thus, among the choices presented, tiller rope stands out as the most flexible option.