Submarine pipeline laying vessel

Details Submarine pipeline laying vessel Submarine pipeline laying vessel

1978-09-22

1982-01-12

Taylor, Dennis L.

Hydraulic and earth engineering

Subterranean or submarine pipe or cable laying, retrieving,...

Submerging, raising, or manipulating line of pipe or cable...

F16L 100, B63B 3504, B65H 7500

Patent

active

RE0308463

ABSTRACT:
This invention relates to a method and to an apparatus for use in laying a submarine pipeline from a pipe-laying vessel. According to one aspect of the present invention, there is provided a reel pipe-laying method for continuously laying a pipeline of up to 24-inch diameter without a stinger by (1) aligning a pipe portion as it is being paid out from the reel, (2) straightening the aligned pipe portion, (3) tensioning the pipe, (4) discharging the straightened pipe under tension into the body of water, and (5) changing for different water depths and pipe conditions the lift off angle of the pipe relative to the horizontal by pivoting a diverter about a horizontal pivot, the diverter supporting at least the straightener and the tensioner and extending from the horizontal pivot mounted near the aft end of the vessel, upwardly toward the reel.

REFERENCES:
patent: 1537942 (1925-05-01), Howard
patent: 3405878 (1968-10-01), Lawrence
patent: 3581506 (1971-06-01), Howard
patent: 3641778 (1972-02-01), Gibson
patent: 3685306 (1972-08-01), Mott
patent: 3775985 (1973-12-01), Shaw
patent: 3822559 (1974-07-01), Matthews
patent: 3872680 (1975-03-01), Nicholson et al.

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