VESSELS WITH ROLL DAMPING MECHANISM
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United States of America Patent
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Issued Date -
Dec 9, 2010
app pub date -
Oct 9, 2008
filing date -
Oct 11, 2007
priority date (Note) -
Abandoned
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Abstract
The present invention relates to a monohull vessel with a heavy lift crane. The crane (20) comprises a jib (24), which has a reach beyond the hull of the vessel and hoisting means for hoisting a load. The vessel is provided with a water ballast system, and further comprises an active roll damping mechanism. According to the present invention, the active roll damping mechanism comprises a solid roll damping ballast (110) which is movable in the transverse direction of the hull, a sensor detecting the rolling motion of the hull, and a drive and control system (115) operable to cause and control the movements of the solid roll damping ballast in response to the detections of the sensor to provide roll stabilization.
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