A streamer steering device to be attached to a streamer or a source of a marine seismic survey system. The streamer steering device includes a casing configured to be attached to the streamer or to the source; a wing assembly connected to the casing and having an active surface used to control depth and/or lateral position of the streamer; and an actuating mechanism located inside the casing and connected to the wing assembly, the actuating mechanism being configured to change a state of the wing assembly from an operational state to a folded state. The active surface has substantially the same area during the operational state and the folded state.