parallel horizontal axes c d fig1 respectively these axes also being parallel to the horizontal axis a through the joints 18 20 at the buoy 12 thus the outboard arm sections 24 26 are pivotable with respect to the inboard sections 14 16 in a vertical direction and can be so pivoted regardless of whether the inboard arm sections ae held stationary or are free to pivot the axis a the terminal swivel assembly 32 comprises a pair of first pipe swivel joints 40 42 oriented on horizontal axes e f respectively these axes also being parallel to above described horizontal axes a c and d a pair of pipe elbows 44 46 interconnect the first swivel joints 40 42 with a pair of second pipe swivel joints 48 50 respectively and these joints 48 50 are oriented about a common vertical axis g which of course is perpendicular to the axis a through the coaxial riser swivel 22 a coaxial coupling pipe swivel 52 oriented on a horizontal axis h that is perpendicular to axis g is connected to the vertical swivel joints 48 50 by pipe elbows 54 56 and a pipe system 58 or other suitable means such as a quick connect disconnect pipe coupler not shown is employed to couple the terminal swivel assembly 32 and thus the arm 10 to the manifold 34 because of the above described novel combination of swivel joints the dual loading arm 10.