Abstract: A method and apparatus for maintaining fluid flow between a fixed subsea wellhead riser conduit and a weathervaning floating production, storage and off-loading (FPSO) vessel without swivel or sliding seals. The fixed riser conduit is divided into two flowpaths which terminate in connectors. First and second drums, coaxially mounted for rotation about a vertical axis, have connectors which are connectable with the flowpath connectors. The drum connectors are connected to one end of flexible pipes, at least partially wound around a respective drum, with the other end tensioned and connected fixably to the FPSO vessel. Enough flexible pipe is on each drum to permit the drum to rotate about a connection arc of greater than 180.degree. when its respective connector connects one flowpath with the FPSO vessel. The connectors and drums are disposed such that each connection arc overlaps the other arc at both ends of each arc.