A sea bed survey system being configured to be towed by a towing body (12) is provided. The system comprises at least one sensor carrier (100) having a plurality of sensors (128) disposed along its length, and at least one deflector (110) for controlling the lateral extension and the vertical position of said sensor carrier (100), wherein the lateral extension exceeds 25% of the length of sensor carrier, and the vertical height above the sea bed is less than the lateral extension of said sensor carrier.