In this paper, the dynamics of a large moored tanker, in wind, waves and current, is investigated using the commercial software AQWA. Two typical mooring types are implemented, namely I-type and V-type,to examine the motion response of the moored tanker and the relevant cable tension under different environmental conditions. The results show that the V-type configuration reduces surge,sway and cable tension. The offloading system, with the tanker in tandem behind the FPSO,is further investigated using the V-type mooring configuration and comparing it to the conventional offloading system, in which the tanker is attached to the FPSO only with a hawser. The investigations show that the V-type configuration has advantages in terms of motion response and cable tension over the hawser connection.
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