Each line sets its own terms and conditions of freight. The carriage of goods requires careful calculation of all terms of his stay on the vessel and in the port from the moment of unloading. At the slightest violation of these parameters by the terminal or line, a weighty penalty for violation of the order is issued. In this case, the carrier will be faced with such concepts as demerdzh and detenshn. These terms are often the cause of confusion, since not many people understand the difference between them. Moreover, inexperienced companies are not at all familiar with such concepts, as a result of which they are forced to pay heavy fines and suffer from damaged reputation.