Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Submerging – raising – or manipulating line of pipe or cable...
Patent
1978-07-06
1981-03-24
Taylor, Dennis L.
Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
Submerging, raising, or manipulating line of pipe or cable...
114265, 405166, B63B 3504
Patent
active
042577187
ABSTRACT:
A semi-submersible pipelaying watercraft is disclosed, which is particularly suitable for operating under particularly hostile marine environments, said watercraft comprising a composite ramp of special construction for launching the pipe to be laid, a system for determining the craft's position and a control system, governed by electronic computers for automatically positioning the craft.
An internal inclinable ramp is coactively combined with an external ramp and the internal ramp is equipped with a locking system and with a displacing system, hydraulic controls being provided for moving both the internal and external ramps. The electronic computers are two and one of them makes the calculations for determining the design parameters, whereas the other computer receives the actual data provided by the several sensors mounted aboard and processes them.
REFERENCES:
patent: Re29478 (1977-11-01), Goren et al.
patent: 2921442 (1960-01-01), Laborde et al.
patent: 3576977 (1971-05-01), Kolb
patent: 3704596 (1972-12-01), Lloyd
patent: 3990259 (1976-11-01), Gunderson et al.
patent: 4091760 (1978-05-01), Lloyd
Brando Pasquale
Rosa Giovanni
Saipem S.p.A.
Taylor Dennis L.
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