An articulated branch assembly comprising pipe member and appropriately arranged combinations of fluid carrying swivels, ball joints, or rubber hose is fixed to the outboard end of a conventional marine cargo loading arm. The branch assembly is used for bunkering vessels while the arm is supported off the cargo manifold adjacent to the bunker manifold. Fitting marine cargo arms with the bunkering assembly and supporting the arm off the cargo manifold permits, for a large percentage of vessels, simultaneous bunkering and cargo transfer through the other cargo arms in the bank. The branch assembly also: eliminates in many cases the need for a separate bunker arm(s), avoids overstressing of the smaller, weaker bunker manifolds, and makes the bunker manifolds more accessible without resorting to long lengths of hose or auxiliary bunkering saddles.