Introduced in 2005, the Volvo Penta Inboard Performance System (IPS) revolutionized marine propulsion with its forward-facing, twin counter-rotating propellers and integrated joystick docking system. This design offers significant improvements in fuel efficiency, acceleration, and maneuverability compared to traditional inboard shafts. The IPS system is compatible with a range of diesel engines, delivering power outputs from 300 to 1,000 horsepower, making it suitable for various applications, from sport cruisers to yachts. The joystick control simplifies docking and tight-quarters maneuvering, enhancing the overall boating experience