Method for lowering an object to an underwater installation site using an ROV
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United States of America Patent
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Aug 30, 2005
Grant Date -
Jul 28, 2005
app pub date -
Jan 28, 2004
filing date -
Jan 28, 2004
priority date (Note) -
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Abstract
The method for lowering an object to an underwater installation site, wherein a submersible remotely operated vehicle (ROV) having at least one thruster for providing lateral thrust is interconnectable to an object, entails providing a vessel, having a winch and suspension cable; interconnecting and lowering the object and ROV towards the underwater installation site using a suspension cable, providing at least one anchor near the installation site; interconnecting each anchor and ROV with a positioning wire, while the ROV and object are suspended in the holding position; tensioning and adjusting the length of each positioning wire such that the interconnected ROV and object are positioned with respect to the installation site; and further lowering interconnected object and ROV, which are positioned by at least one positioning wire onto the installation site while keeping the interconnected object and ROV suspended from a suspension cable.
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