Patent ID: 8061291

Claim:
A geostationary anchoring and riser arrangement in a vessel comprising a vertical shaft in the hull of the vessel, the vertical shaft comprising a wet vessel area in a bottom area, a segmented annular axial bearing and a segmented annular radial bearing mounted in the vertical shaft, a body in the wet vessel area of the vertical shaft and mounted to the axial and radial bearings such that the body is rotatable about a vertical axis, which body has a top side and a bottom side, guides for risers between the top side and the bottom side, is provided with an overlying fluid manifold connected to the risers, and is anchored to a seabed by a number of mooring cables, wherein there is provided a dynamic primary seal between the body and the vessel above said axial and radial bearings, and a secondary seal between the body and the vessel under said axial and radial bearings, wherein a fluid manifold column is supported by a central stem projecting from the body top side.