A lot of people ask "What is it?", "How does it work", "How can I obtain such a certificate?" etc. The issue about the Dynamic Positioning system and courses is not as simple as it seems. The Dynamic Positioning is an on board computer-controlled system, found on certain types of vessels and used to control and maintain the vessel's position. In order to calculate and maintain the vessel's position, it uses its own propellers and thrusters. By combining the position reference sensors, wind sensors, motion sensors and gyro compasses, the system provides information to the computer and applies to the vessel's position and the magnitude and direction of environmental forces affecting its position.