Classification societies are established with this purpose to provide services to ensure the safety of ships, life and property of people and the environment at sea. That's why the "civil responsibility" of institutions finds an important rating. The current article, which is done in a descriptive-analytical way, has reached the following findings: The judicial system in England believes in the lack of civil responsibility. Second, there is no special procedure and law in this field in Iran, but by examining the contracts between classification institutions and ship owners, they can come to the conclusion that both parties are responsible in the contract, but this is an important point. . In this research, it has been verified and emphasized that the classification institutions in the memorandums concluded with the builders or ship owners mention exactly this condition that even in the assumption of proving negligence, negligence and the factors of the institution's factors in the accidents, the institution. Finally, he will pay an amount up to twice the fee received for classification. And damages in excess of this amount have remained uncompensated despite this limitation condition. A claim based on compulsory guarantee requires proof of its elements and according to the general laws of this institution, it requires careful investigation. And in England, the judicial system believes that institutions only have the duty of providing advice and giving suggestions.