Azimuth thruster with tube are a kind of Z type propulsion combined with tube propellers and steering gear function. The part under water can steer by 360 degree free rotating. all-directional propulsive force is formed. The device combines the highly efficiency of tube propellers and flexibility of azimuth thruster. The device is mainly used for varied engineering ships with high flexibility or with dynamic positioning demand, such as harbor tugs, undersea cabling working ships, floating crane barges, marine platform and platform supply ships, and others. The power range of the products is from 60HP to 3500HP.