This article aims to provide a general overview from operational side with regards to riser mechanics. It is utmost important to understand the movement of the riser string in the view of taking the right decision in case of losing platform’s position and therefore the decision for emergency disconnect. Any company operating in deep and ultra-deep waters needs to set up the decision tree in order to safely disconnect and secure the well. Once the riser is deployed, it is essential that its behavior is monitored closely in order to be able to face any possible critical situations. In this respect, understanding of riser mechanics and capability of recognizing potential problems before their development into distress situations is extremely important. This article is simulating the operation of riser system for a drilling installation with dual rig and N-Line tensioned system.