TO CONTROL THE HATCHES OF THE SHIP AND TO MAKE ULTRASONIC IMPERVIOUSNESS TESTS OF THE HATCHES IN A CASE OF NECESSITY, RECOMMENDATION TO THE MASTER OF THE SHIP, IF THERE IS A PROBLEM AND TO FOLLOW THE ELIMINATION OF THE PROBLEM. IF IT IS POSSIBLE, TO CONTROL THE CONDITION IN THE FACTORY OR DEPOT WHERE THE CARGO IS STACKED BEFORE LOADING, TO ADVISE THE LOADER TO CHANGE THE DAMAGED CARGO WITH NEW ONES. TO CONTROL IMPERVIOUSNESS OF HATCHES AND TO MAKE NECESSARY TEST FLOOWING THE LOADING OF CARGO.