Exhausy gas purifying apparatus for a ship

An exhaust gas purifying apparatus for a ship is disclosed. According to an embodiment of the present invention, the exhaust gas purifying apparatus for a ship for purifying exhaust gas of a ship comprises: an seawater introducing unit introducing seawater; a wet scrubber which is connected with the seawater introducing unit through a pipe and discharges exhaust gas purified by the seawater to the outside after the exhaust gas of a ship and the seawater introduced by the seawater introducing unit are introduced into the wet scrubber; and a seawater circulating and supplying unit which supplies the seawater discharged after purifying the exhaust gas in the wet scrubber to the wet scrubber again after controlling the content of the discharged seawater. The wet scrubber includes: a housing, wherein the housing has: an exhaust gas inlet through which the exhaust gas in a purifying station is introduced; an exhaust gas outlet through which the purified exhaust gas is discharged; a seawater inlet connected with the seawater introducing unit; and a seawater outlet discharging the seawater left after purifying the exhaust gas; a main seawater supplying pipe which is arranged in the housing and supplies the seawater into the housing; and a plurality of auxiliary seawater supplying pipes which are radially provided in an end part area of the main seawater supplying pipe and radially spray seawater. According to an embodiment of the present invention, the exhaust gas purifying apparatus for a ship can be economical by having a simple and low cost configuration for purifying the exhaust gas of a ship.