A kind of marine propeller

The invention provides a kind of marine propeller, the stern propeller of stern both sides it is arranged on including two bow thruster being arranged on fore both sides and two, the action respectively of described bow thruster and stern propeller, makes boats and ships advance, falls back, left and right translation and left and right turning. The marine propeller of the present invention to some extent solves common ship and there is the existence of some inconveniences in the problem accessed to the ports, the direction that boats and ships move ahead can be controlled more easily: as moved ahead, falling back, left and right turn, especially can control to move in parallel about boats and ships, this is to a certain extent, greatly increase the mobility of boats and ships so that it is access to the ports more convenient, safer.