Sea transport has a key role in international trade, so it is very important for transport of goods to be contracted fast and undisturbed. Therefore, the contracts of carriage of cargo by sea are used and they have the main role while arranging transport between the parties who are doing transport and the ones who are ordering transport. They regulate the rights, obligations and liabilities of the parties. While performing transport, it is necessary to adhere to certain rules and laws that are still not harmonized at the international level. To speed up the whole process of arranging transport and issuing other transport documents, nowadays, ready-made document forms are increasingly used, some of them are available in a digital form. Through this work, the complexity of performing maritime transport from the legal point of view comes to the fore. Complexity is manifested through the rights and requirements of the parties, and the rules to be followed. At the end of the work, the master's responsibility in the execution of the contracted transport will be stated, as one of the important persons in fulfilling all the provisions related to the work of transporting cargo by sea.