We provided our knowledge about virtual modeling to help Damen Dredging Equipment in developing the RoRo Deep Dredge. We developed virtual models that described the behavior of the draghead hanging on cables connected to the ship. We cooperated with MARIN who simulated the ships behaviour and performed the scale model tank tests. After validation with data from the scale model tank tests the virtual model was used to simulate the behavior of the draghead with regards to different design changes. It proved to be an excellent and quick tool to evaluate design changes with regards to safety and accuracy of the draghead.