Structures to support wind turbines come in various shapes and sizes, the most common illustrated in Table 11. Monopiles have been chosen for most of the installed offshore wind farms to date.
Concrete gravity base structures have also been used on several projects. As wind turbines get larger, and are located in deeper water, tripod or jacket structures may becomemore attractive [30]. The deepest offshore turbines constructed to date have been at Beatrice where turbines were constructed on jacketed foundations in 45m of water