Ships – Mooring device – Boom type
Patent
1984-06-04
1985-08-06
Sotelo, Jesus D.
Ships
Mooring device
Boom type
441 5, B63B 2100
Patent
active
045328790
ABSTRACT:
An improved mooring system for mooring a floating vessel to an offshore structure is disclosed. The mooring system includes a first mooring arm connected to the vessel which is in sliding engagement with a second mooring arm connected to the structure. The first mooring arm is initially at a mean position relative to the second mooring arm in the absence of loading forces induced by wind, waves, ice, or an ocean current acting on the vessel. As a loading force urges the vessel away from the structure to displace the first mooring arm from the mean position, a hydraulic pressure cylinder is compressed to furnish a restoring force which counteracts the loading force. As the loading force subsides, the hydraulic pressure cylinder urges the first mooring arm toward the mean position. In a preferred embodiment of the invention, a stop is attached to the first mooring arm to limit the excursion of the first mooring arm from the mean position. In other embodiments of the invention, a block and tackle combination can be used to vary the size and the stroke of the hydraulic pressure cylinder required to accommodate a particular loading force.
REFERENCES:
patent: 2979014 (1961-04-01), Yordi
patent: 3060885 (1962-10-01), Nolf
patent: 3353512 (1967-11-01), Mathews et al.
patent: 3426719 (1969-02-01), Mizell
patent: 4066030 (1978-01-01), Milone
patent: 4144831 (1979-03-01), Heydolph
patent: 4494475 (1985-01-01), Eriksen
Atkinson Alan J.
Exxon Production Research Co.
Sotelo Jesus D.
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