An arrangement for remotely controlling the position of a trawl door (1) or deflector for seismic surveys comprises an attachment point provided on a movable part (10). The movable part (10) can be moved in relation to a body of the trawl door (1) by means of a remotely controlled actuator. The movable part (10) with the attachment point (15) for a towing line is provided at the body or at a centre rib of the body of the trawl door (1). The movable part (10) with the attachment point can be moved substantially in vertical direction and approximately at right angles in relation to the direction of movement of the trawl door (1) when operated at sea, thereby resulting in an upwards or downwards movement of the trawl door (1) and thereby providing continuous adjustment of depth at which the trawl door (1) operates in the water.
