Rsv-gusto Engineering B.v.

Gusto Engineering B.v.

Bart Boon

Device for absorbing impacts during lowering or lifting respectively of the support legs (1) of an artificial island comprising a pontoon and legs that are movable and lockable with respect to said pontoon further comprising the fact that the legs (1) at or near their lower end are surrounded by an apron (3) out of flexible material that is fixed to the circumference of each leg and extends beyond the lower end of said leg.

Device for absorbing impacts during lowering or lifting respectively of

Device for absorbing horizontally directed impact loads on the supporting legs of an artificial island comprising a pontoon and legs that are movable in the vertical direction and can be locked when the legs are lowered or lifted respectively further comprising energy absorbing and/or transfering means (2) extending downwardly from the lower part (1) of each of the legs.

Device for absorbing horizontally directed impacts on the support legs

The invention relates to a method for pre-loading the legs (2,3,4) of an artificial island (1) to increase the stability of the island preloading is performed by ballast (7-17) placed in or on the legs, this ballast being preferably located within flexible bags (17,18,19,22,23,24,25,26,27,33,34,48,49,50,51) placed upon the trussed members (11,12,13,14,15,16) of the legs or upon a plateau (46) supported by beams (45). Instead of bags a rigid receptacle formed by plates (37-40) can be used for receiving ballast. Furthermore, the hollow tubular members (52,53,54,55) can be used for receiving liquid ballast.

Method for increasing the stability of an artificial island by means of

Method and apparatus for lowering and positioning a pipe line onto the bottom of deep water, the pipe line being assembled from pipe sections on deck of a ship, which pipe line from the bottom of the water extends upwardly according to a curved path (18) followed by a straight portion (17) and finally by a second curved part, the pipe line being held under tension by the ship to maintain the radius of curvature (R) sufficiently large tensioning is performed from the ship directly on the rectilinear part (17) of the pipe line while above the point of engagement of the tensional force the pipe line is subjected to a bending moment only. The apparatus preferably has a rotatable tube (2) in the ship through which the upper part of the pipe line extends vertically upwardly into a derrick (15) for assembling purposes. The ship has below the hull a horizontal outrigger (3) with a travelling crab (4) with cables (16) of tackles (4) running to clamps (5, 6) which in turn can hold the pipe line ( 17, 18) and further an angle lever system (7, 8) with pipe line guide elements (10) and a bending device (11).

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Schiedam, Netherlands

Bart Boon