External Cantilever Turret
The external cantilever turret is the simplest form of the turret mooring system. The external turret can be mounted onto the bow or the stern of the vessel, and can be fabricated independently, with very little time required in a dry dock for integration. Whether a bow or stern mounted turret is selected is dependent on a number of parameters such as vessel hull structure and process conditions and hence proximity to the accommodation block.
The external cantilever turret is better suited for shallow water than the internal and column turrets due to the elevated position creating a larger distance between the riser hang off points and the sea bed, facilitating the riser configuration.