Abstract: The method for removing or positioning a structure (103) which is erected on either an underwater bed or anchored to the underwater bed entails the use of a hoisting mechanism. When the structure (103) is being removed, it is detached from the underwater bed. Then, the structure (103) is connected to a hoisting mechanism which is arranged on a separate hoisting vessel (100). The structure is hoisted up by the hoisting mechanism and is attached to a transport vessel (1) in such a manner that it can tilt about a horizontal axis. Then, the structure is tilted into a substantially horizontal position. The structure is positioned in the reverse order.

Abstract: The invention relates to a method for removing or positioning a structure (103) or a part (107) of a structure which is erected on an underwater bed or anchored to the underwater bed. When the structure (103) is being removed, it is detached from the underwater bed. Then, the structure (103) is connected to a hoisting mechanism which is arranged on a separate hoisting vessel (100). The structure is hoisted up by the hoisting mechanism and is attached to a transport vessel (1) in such a manner that it can tilt about a horizontal axis. Then, the structure is tilted into a substantially horizontal position. The structure is positioned in the reverse order.

Abstract: The invention relates to a method of production for a fermentation product, in which ripe compost is subjected to treatment with worms, bacteria and fungi, after which the fermentation product is dug off, and, if necessary, ground and sifted. After digging off the product, it can be pre-dehydrated at a temperature below 50 .degree. C., if one so wishes, then --if necessary--it can be ground and sifted, and be subjected to desiccation, during which the temperature of the fermentation product does not rise above 30.degree. C. during the desiccation process. Ripe compost, consisting of vegetable, fruit and garden waste, is especially suitable as basic material. If one so wishes, the fermentation product can be pelleted before desiccation. The pellets can, for example, be used as floor cover in animal pens or as cat's box litter. The non-dried product is especially suitable as a supplement for garden and pot-plant soil.