A new Interface for seamless control over the IPS system! vovloreplace The Dockmate® TWIST can now be connected to the Volvo Penta IPS system, thanks to our brand new Interface. This Interface acts as an extra station in the system and doesn’t require any calibration. It allows the skipper to move around the boat while keeping his fingers on the fully proportional joystick, making docking easier & less stressful!