| 摘要 |
A deep-water vertical offshore riser between a subsurface or surface buoy and the sea bed, the riser thereby comprising a plurality of riser sections, each section comprising an upper connection (7) containing buoyancy means and an lower connection (6) containing means for connection a riser to the upper connection (7) of a section below, the connection operation thereby being carried out and controlled by a remote control vehicle (ROV), and each individual section (1) being towable at the surface, the uppermost section comprising a subsurface buoy (11) at the upper end.
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