Method for production and laying a pipeline or a cable under wat

Details Method for production and laying a pipeline or a cable under wat Method for production and laying a pipeline or a cable under wat

1988-07-14

1990-04-03

Basinger, Sherman D.

Ships

Mother ship, floating landing platform, and harbor

114244, 405166, 4141394, 4141406, B63B 3502

Patent

active

049130803

ABSTRACT:
The invention relates to a method in production and laying a pipeline or a cable under water, comprising production of the pipeline/cable in a desired length, winding it onto a drum, transporting the drum and laying ramp on board a vessel and laying from the drum while the vessel is moving. Winding onto drum (9) is carried out with the drum being mounted in and carried by a drum carrier (10) on land. At a desired time the drum with wound pipeline is taken on board the vessel (13) by sliding drum carrier (10) on a pier (12) or the like, which in the horizontal plane has an overlapping positional cooperation with the correctly ballasted vessel (13,14) to a position in which drum carrier (10) can be taken over by the vessel (13) by a vertical relative movement between drum carrier (10) and a supporting structure for it on the vessel. Drum carrier (10) can then, if desired, be slid onto a supporting structure (15) to a desired position on the vessel and be made fast there. A vessel for carrying out the method is also disclosed. And a new ramp unit (26) for use in winding off a pipeline or a cable from or onto the drum is also disclosed.

REFERENCES:
patent: 2699321 (1955-01-01), Nelson
patent: 3740957 (1973-06-01), McKenzie
patent: 3822559 (1974-07-01), Matthews, Jr.
patent: 4080920 (1978-03-01), Berthet et al.
patent: 4176801 (1979-12-01), Douglas
patent: 4721410 (1988-01-01), Recable

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