Patent ID: 7857001

Claim:
A system for transferring a fluid between a first structure and a second structure which are movable relative to each other, comprising: a. a crane pedestal adapted for mounting on the first structure, b. an offloading arm in the form of a single-boom crane boom rotatable about the crane pedestal in the horizontal plane and further moveable in the vertical plane, c. a connector trolley attached to the crane boom, said connector trolley being movable along the length of the crane boom, said connector trolley comprising a connection member having a universal joint adapted for fastening of said connector trolley to a receiving terminal on the second structure, d. a fluid-conveying pipe extending from the first structure along the crane boom and connected to the connector trolley, said fluid-conveying pipe having an arrangement for compensating for the longitudinal movement of the connector trolley, wherein said arrangement for compensating for the longitudinal movement of the connector trolley comprises a section of substantially rigid pipe being arranged along the crane boom in a spiral, the axis of said spiral pipe section being arranged parallel to the longitudinal axis of the crane boom.