Self-propelled jack-up vessel is a vessel specifically designed for the installation of offshore wind turbines. Similar to a jack-up rig it is self-elevating. To enable quick relocation in the wind farm it is self-propelled. It also has a slender ship shaped hull to achieve a quick turnaround time with the vessel carrying several foundations or wind turbines each time. Azimuth thrusters are used to position the vessel during jack-up operations.