To check the exact condition of the load at the same time to open the containers. Ocular recognition and material of the commodity of import and exportation. Visual inspection before and after the unloading, maneuver and processes of storage. To establish and to register the nature, Reason and extension of the possible caused to the load, anyone that is his(its) nature. Expedition in writing of the state of facts, consistent of a Certificate of Supervision of Load and Unloading.