Which device is installed to prevent wear on davit arms and wires?

The correct choice relates to safety devices specifically designed to mitigate wear on davit arms and wires. In the context of marine operations, davits are structures used to raise and lower lifeboats and other heavy equipment. Over time, repetitive use can lead to significant wear and tear on these components.

Safety devices, such as wear pads or similar protective elements, help by providing a buffer that absorbs some of the forces exerted during the operation of the davits. This not only prolongs the lifespan of the davit arms and wires but also enhances operational safety by reducing the risk of equipment failure.

In comparison, while winches and capstans are mechanized devices intended for moving or hoisting loads, they do not specifically address the wear and tear issue of the davit arms and wires. An anchor is primarily designed for holding a vessel in place and is not relevant to the preservation of davits. Therefore, the safety device stands out as the most appropriate answer to the question regarding protecting davit components from wear.