Contra-rotating propeller is suitable for ships with high speed requirement, shallow draught or limited propeller diameter. It is often used in ro-ro vessel, new battery ship, unmanned vessel, etc. This type of azimuth thruster can provide 360-degree all-directional thrust for the hull, and can change the hull Angle in the restricted area. As the main propulsion equipment for the vessel, it not only improves the vessel maneuverability, but also ensures the speed.