Method for Constructing a Floating Unit
a floating unit and construction method technology, applied in the direction of floating buildings, self-bailing equipment/scuppers, vessel safety, etc., can solve the problems of unit being subjected to increased environmental loads, unit being subjected to other problems, and needing reinforcements, etc., to achieve the effect of simple manner
Inactive Publication Date: 2010-08-19
GVA CONSULTANTS
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
[0014]A first object of the present invention is to provide a method for constructing a unit adapted to float in a body of water, which method provides for that the hydrostatic properties of the unit may be modified in a simple manner, even at a late stage of the construction phase of the unit.
[0015]A second object of the present invention is to provide a method for constructing a unit adapted to float in a body of water, which method provides for that the hydrostatic properties of the unit may be modified in such a way that other properties, such as hydrodynamic properties, of the unit are not unduly effected.
[0024]Thus, by providing a method for constructing a unit which method comprises the step of modifying a parameter relating to the unit's hydrostatic properties by sealing at least a portion of a cavity, the hydrostatic properties of the unit may be modified at a late stage of the construction phase, and even after the completion of the construction of the unit in a dock or by a quay, in a simple and straightforward manner.
[0025]Moreover, since the hydrostatic properties of the unit—according to the method of the present invention—are modified without having to furnish the unit with protruding extensions, the hydrodynamic properties of the unit are generally only marginally modified, which reduces, and often even removes, the need for reinforcements of the unit and / or modifications of additional arrangements, such as mooring arrangements, due to the modifications of the hydrostatic properties of the unit.
[0028]By the provision of a plurality of cavities in the unit, the flexibility as regards how to modify the hydrostatic properties of the unit is enhanced.
[0029]According to another embodiment of the present invention, the step of fixedly sealing at least a portion of the cavity is performed for at least two of the plurality of cavities. This further enhances the flexibility regarding how to modify the hydrostatic properties of the unit.
Problems solved by technology
However, although the extensions are useful for obtaining desired hydrostatic properties, the extensions also often introduce other problems for the unit.
For instance, the extensions generally result in that the unit will be subjected to increased environmental loads, e.g. loads from waves and currents, and these increased loads may in turn result in the need for reinforcements of the unit.
Thus, the provision of the extensions of the unit generally results in an increased construction time for the unit, which in turn may result in increased construction costs.
Method used
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Embodiment Construction
[0051]The invention will be described using examples of embodiments. It should however be realized that the embodiments are included in order to explain principles of the invention and not to limit the scope of the invention, defined by the appended claims.
[0052]FIG. 1 illustrates a unit 10 adapted to float in a body of water 12, during the execution of the construction method of the present invention. In FIG. 1, the unit 10 is a semi-submersible unit 10 but is should be noted that the construction method of the present invention is also applicable for other types of floating units, such as for instance ships or spar buoys (not shown in FIG. 1). Purely by way of example, the buoyancy of the unit 10 may be above 10 000 metric tonnes and may in some cases even be above 100 000 metric tonnes.
[0053]The FIG. 1 semi-submersible unit 10 comprises a float 14, a deck structure 16 and at least one support column 18 extending from the float 14 to the deck structure 16. A support column 18 gene...
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The present invention relates to a method for constructing a unit adapted to float in a body of water, the method comprising the steps of:providing a cavity in the unit such that the cavity is open to the environment surrounding the unit, wherein at least a portion of the cavity is adapted to be located below a still water surface when the unit floats in the body of water, anddetermining a first value of at least a first parameter relating to required hydrostatic properties for the unit.The present invention also relates to a unit adapted to float in a body of water. The unit comprises a cavity such that the cavity is open to the environment surrounding the unit. At least a portion of the cavity is adapted to be located below a still water surface when the unit floats in the body of water. Moreover, the present invention relates to a use of a cavity in a unit adapted to float in a body of water.
Description
CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority to Provisional Patent Application No. 61 / 152,293 which was filed on Feb. 13, 2009 and SE 0900185-0 which was filed on Feb. 13, 2009, the entirety of which is incorporated by reference herein.TECHNICAL FIELD[0002]The present invention relates to a method for constructing a unit adapted to float in a body of water. The method comprises the steps of:[0003]providing a cavity in the unit such that the cavity is open to the environment surrounding the unit, at least a portion of the cavity being adapted to be located below a still water surface when the unit floats in the body of water, and[0004]determining a first value of at least a first parameter relating to required hydrostatic properties for the unit.BACKGROUND[0005]The present invention also relates to a unit adapted to float in a body of water. The unit comprises a cavity such that the cavity is open to the environment surrounding the unit. At least a po...
Claims
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Login to View More IPC IPC(8): B63B9/08B63B9/06B63B9/00
CPCB63B9/065B63B75/00B63B1/02B63B13/00B63B39/02B63B43/06
InventorKULLANDER, THOMASLAGER, TOMMYSTRAND, DANIEL
OwnerGVA CONSULTANTS