What equipment is used to raise and lower RHIBs?

The Slew Arm Davit is specifically designed for raising and lowering resilient hull inflatable boats (RHIBs) from the deck of a vessel into the water and vice versa. This system allows for precise control and maneuverability when handling the RHIBs, providing a safe and efficient means of launching and recovering these small crafts. The design and mechanical capabilities of the Slew Arm Davit enable it to handle the weight and balance of the RHIB effectively, making it the preferred choice for this application.

While other systems, such as hydraulic winches or manual pulley systems, can lift heavy objects, they may not offer the same level of control, stability, and ease of use that the Slew Arm Davit provides. Thus, the Slew Arm Davit is the correct answer, as it fulfills the specific requirements for deploying and retrieving RHIBs from naval vessels.