| 摘要 |
The invention relates to flexible risers for transfer of hydrocarbons between a sea bed installation and a vessel ( 10 ) floating at the sea surface. The riser ( 18 ) is provided with means ( 20 ) for protecting the riser ( 18 ) from impacts. The protection means ( 20 ) covers at least the upper part of the riser ( 18 ) and is retractable to an inactive position. When in operation, the riser protection means ( 20 ) is either suspended from the vessel ( 10 ) or from a submerged turret buoy, forming part of a mooring system for the vessel ( 10 ).
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