Underwater smoke exhaust pipe structure of ship

The invention relates to an underwater smoke exhaust pipe structure of a ship; the structure is characterized in that a smoke exhaust pipe in a ship body is provided with a smoke exhaust port in a ship body outer plate, a water squeezing plate protruding outwards is installed at the position, adjacent to the smoke exhaust port, of the ship body outer plate, and the distance between the outer side face of the water squeezing plate and the ship body outer plate is gradually decreased from the middle to the side edge. Under the action of the water squeezing plate, an exhaust water low-pressure area is formed at the smoke outlet when the ship advances, and the protruding part of the water squeezing plate is prevented from guiding water into the smoke exhaust pipe when the ship retreats at a low speed. The ship underwater smoke exhaust pipe is simple in structure, easy to manufacture and convenient to maintain, the back pressure at the outlet end of the smoke exhaust pipe can be effectively reduced through the arr