Offshore s-lay pipelaying vessel
AssigneeItrec B.V.
InventorsArnoud Laurens FEIJEN, Terence Willem August VEHMEIJER, Joop ROODENBURG
Life of this patent
Estimating the term…
Abstract
An offshore S-lay pipelaying vessel for laying a pipeline on the seabed, the vessel includes a hull and an elongated stinger having a hull end and a free end, the stinger being adapted to support the pipeline to be laid from the vessel. The stinger includes a stinger frame, possibly composed of one or more rigid stinger frame sections, possibly articulated sections. And, distributed over the length of the stinger, multiple pipeline support assemblies are mounted to the stinger frame that provide support for the pipeline.
Claims8
An offshore S-lay pipelaying vessel for laying a pipeline on the seabed comprising:
- a hull;
- an elongated stinger having a rigid stinger frame structure with a hull end extending a horizontal distance from the hull of the vessel and a free end, said stinger being adapted to support the pipeline to be laid from the vessel,
- a detachable stinger mounting unit comprising a frame which is detachably mounted to the hull of the vessel;
- wherein the hull end of the stinger is pivotally attached to the frame of the detachable stinger mounting unit, and wherein the stinger mounting unit is provided with a stinger suspension device allowing the stinger to be pivoted close to the stinger mounting unit forming a compact ensemble of stinger and stinger mounting unit for transport purposes, and pivoted into the water to support the pipeline to be laid from the vessel;
- wherein the combination of the stinger and detachable stinger mounting unit is configured to be installed and de-installed without requiring the stinger suspension device to be disconnected from the stinger or detachable stinger mounting unit.
Dependencies are inferred from the claim text.