Damages of ships and naval vessels due to accidents and attacks would arouse enormous loss of lives and properties. To prevent maritime accidents is the best, and many researches have been achieved. But maritime accidents occurs continuously and to minimize casualties is considered as the second best. This paper has focused on the method and implementation of survival time estimation system for ships(STES system). The developed STES system provides plain and easy operations to get the survival time of damaged ship and naval vessel. The officers feed damaged conditions simply and quickly, and grasp instantly the survival time for damages. It would be attained by query and retrieval of survival time DB collected in a design process. We also check an effectivity of the system by practical applications.