摘要 |
The block (4) holding the cable (2) running through the block is fixed so the cable runs submerged over part of its length and is (2) secured at its far end (2a) to a buoy (3). The block is fitted out with a collar (4b) and is (4) secured to a partly submerged load (8) which is made of several parts to be loaded with sand, gravel, stones etc in a foldable separable format and can rotate round a vertical axis. The first end of the cable is fitted with a float. The centers of gravity and form of buoy are dissimilar and the first end of the cable is fixed so the buoy rotates when the cable is pulled tight with the result that the center of gravity necessarily rises.
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