What is the function of the split duct astern deflector?

The split duct astern deflector plays a crucial role in managing the water flow around a rescue boat's propulsion system. Its primary function is to deflect the jet stream effectively, ensuring that the water flow remains clear. This is particularly important for maintaining optimal performance and maneuverability while the boat is in motion. By directing the jet stream in a controlled manner, the deflector helps to prevent turbulence and ensures a smooth flow of water, which can enhance the efficiency and handling of the boat. This design feature is essential for ensuring stability and preventing cavitation, which occurs when there are gaps in the water flow, potentially leading to reduced performance or damage to the propulsion system.