The machine selected would be a
horizontal-axis three-bladed turbine with a tubular tower, and they
• a maximal height above sea-level of 170 m
• the distance between the lower point swept by the rotor blades and the highest envisaged water level during spring tides, which is of 22 m
The following picture illustrates the components of an offshore wind turbine as well as the relations between the different sea-levels and the reference level.