This application is a useful reference for learning and understanding the International Regulations for Preventing Collisions at Sea.

It includes a set of cards that are arranged in a way that will allow you to check your knowledge and understand the rules better. It is a useful tool for navigators and those who are preparing to become navigators.

This application is a reference that contains a set of rules. The purpose of these rules is to prevent collisions at sea. The application will help you to learn about the International Regulations for Preventing Collisions at Sea and check your knowledge.