Portable inverted-L-shaped dynamic positioning device

The invention provides a portable inverted-L-shaped dynamic positioning device which comprises an upper tower, a lower tower and a ducted propeller. The upper tower is composed of a horizontal section and a vertical section. The end of the vertical section of the upper tower is connected with the upper end of the lower tower through a rotary shaft. The ducted propeller is installed at the lower end of the lower tower. The horizontal section of the upper tower is provided with lifting lugs B. The lower end of the lower tower is further provided with lifting lugs A. A hanger rope A and a hanger rope B are connected to the lifting lugs A and the lifting lugs B correspondingly. Electromagnets are arranged on the end face of the vertical section of the upper tower and the end face of the lower tower correspondingly. The portable inverted-L-shaped dynamic positioning device has the characteristics of being simple in structure, easy to store and fold and capable of saving space and is particularly suitable for ships with large freeboards.