Patent ID: 8904949

Claim:
A system for mooring a vessel for production of hydrocarbons, the system for mooring the vessel comprising: at least two floating bodies, moored by means of differentiated compliance spread anchoring system to a sea bed, allowing partly weathervaning of the vessel; at least a riser system extending from the sea bed to each of the at least two floating bodies; and a fluid transfer system provided on each of the at least two floating bodies and configured to transfer of fluids from the two floating bodies to the vessel, the at least two floating bodies and the vessel being provided with a locking device configured to lock the at least two floating bodies to the vessel at a bow and a stern of the vessel in a mechanically rigid manner, thus providing an integrated, rigidly fixed unit comprising the vessel and the floating bodies, wherein the locking device comprises a releasable groove and tongue connection device configured to lock the at least two floating bodies to the vessel for forming a rigid motion preventing interconnection, and wherein the groove of the releasable groove and tongue connection device is arranged on the vessel and the corresponding tongue is arranged on the at least two floating bodies, the groove being open downwards and the tongue being in the form of an upwards extending fin or flange.