Suction dredger barge

A suction dredger having a central hold and air chambers located on both sides of the hold, said central hold having an overflow toward the outside of the hull and an overflow toward said air chambers, control valves for opening and closing the latter overflow, said air chambers having bottom walls that incline downwardly toward the central hold, discharge valves between the air chambers and the central hold at the bottom of the air chambers, and means to unload said central hold.