Itrec B.v.

Arnoud Laurens Feijen

Joop Roodenburg

Terence Willem August Vehmeijer

Ronny Lambertus Waltherus Nouwens

Diederick Bernardus Wijning

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.

Offshore S-lay pipelaying vessel

A method for installing an accessory onto a pipeline to be laid on the seabed, includes launching the pipeline from a first position of a tower in which the tower is at an angle &#x3b1; with respect to the vertical; stopping the launch of the pipeline, and hanging off the launched pipeline in a hang off module; positioning an accessory in a tower firing line; attaching the accessory to the launched pipeline in the hang off module and to at least one A&R cable; suspending the accessory and the launched pipeline from an A&R system; disengaging the hang off module from the launched pipeline; pivoting the pipeline launch tower to an accessory launch position in which the tower is at an angle &#x3b3; that differs substantially from angle &#x3b1;, such that a pipeline launch trajectory is created which is large enough to launch the accessory and the launched pipeline with the A&R system.

Marine pipeline installation system and methods

The invention relates to a marine pipelaying system comprising a vessel () provided with a pipeline launch tower (). The tower () comprises pipe laying equipment defining a tower firing line, and is adapted for launching a pipeline () along the firing line into the sea. The system furthermore comprises a hang off module () supported in the lower part of the firing line for clamping and supporting the weight of previously launched pipeline () as well as a stinger for guiding the launched pipeline (). The stinger () is supported at its upper end in the lower part of the firing line. The stinger is displaceable from the firing line.

Marine pipelaying system and method

An offshore S-lay pipelaying vessel for laying a pipeline on the seabed, said vessel comprising: &#x2014;a hull; &#x2014;an elongated stinger having a hull end and a free end, said stinger being adapted to support the pipeline to be laid from the vessel, wherein the stinger comprises a stinger frame, possibly composed of one or more rigid stinger frame sections, possibly articulated sections, and wherein&#x2014;distributed over the length of the stinger&#x2014;multiple pipeline support assemblies are mounted to the stinger frame that provide support for the pipeline.

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Rotterdam, Netherlands

Arnoud Laurens Feijen