A turret mooring system for a tidal turbine assembly uses a bifurcated mooring line 116, 118 attached at spaced attachment points 128 to increase the torque exerted by the turret 100 so that it will not be over-rotated by frictional forces between the turret 100 and the assembly 150 moored to the turret 100. The bifurcation 120 may be located within 10% of the length of the line from the chain table attachment points 128. The main length of the mooring line 116 may use chain, while the bifurcated portion 118 may use a pair of low mass synthetic cables, connected via a bridle 120. Alternatively, frictional forces may be reduced by the turret providing an upward force to the assembly, which may also resist pitching moments.
Improved turret mooring system
30.06.2021
Patent
Elektronische Ressource
Englisch