Patent EA-005053-B1 (EA)
Title: Apparatus and method for deploying an object under water
IPC: B63B35/04
Filed: 2000-03-20
Abstract: 1. A deployment apparatus for deployment of an object in a fluid, e.g. the sea, by means of at least a first and a second cable, such as a load carrying cable and a data-end-power umbilical, to be connected to the object, the apparatus comprising first and second winch means for respectively reeling in and out the first and second cable in order to allow movement of the object with respect to the apparatus, the winch means being connected to a heave compensating system, in order to control the movement of the load with respect to the seabed during deployment thereof, wherein the first and second winch means are provided with control means which cooperate in order to synchronize the cable speed of both first and second cable and wherein the apparatus is provided with a bundling apparatus for bundling the cables, when reeled out, in order to provide a single cable assembly between the apparatus and the object during deployment, the bundling apparatus being provided with sensor means for measuring the speed of the cables with respect to the bundling apparatus, the sensor means being connected to the bundling apparatus by means of processing means, such as a computer, for controlling the bundling apparatus dependent on the speed of the cables. 2. The apparatus according to claim 1, wherein the bundling apparatus is adapted to enclose the first and the second cable by means of discrete bundling elements. 3. The apparatus according to claim 2, wherein the discrete bundling elements are formed as rings or clips. 4. The apparatus according to any one of claims 1-3, wherein the bundling apparatus is adapted for application to and removal from the bundling elements from the cables. 5. The apparatus according to any one of claims 1-4, wherein the bundling apparatus is provided with a storage for bundling elements, such as clips. 6. The apparatus according to claim 5, wherein the bundling apparatus is provided with a dispenser assembly, the dispenser assembly being movable between a storage position adjacent the storage for feeding one or more clips to the dispenser assembly and a cable position, adjacent to the path of the cables through or along the apparatus, for application of the clips around the at least first and second cable. 7. The apparatus according to claim 6, wherein the dispenser assembly is provided with means for opening and closing a clip. 8. The apparatus according to claim 7, wherein the means for opening and closing a clip comprise pins, which pins cooperate with respective holes in the clips. 9. The apparatus according to claims 7, 8, wherein the pins for opening and closing a clip are fixed on a first and a second lever, the levers being connected to a single actuating element. 10. The apparatus according to claim 9, wherein the actuating element is a pneumatic cylinder. 11. The apparatus according to any one of claims 1-11, wherein the apparatus is provided with a cable guide, for guiding the cables along the cable position. 12. The apparatus according to claim 1, wherein the bundling apparatus is adapted to enclose the first and second cable by means of a continuous enclosure. 13. The apparatus according to claim 12, wherein the bundling apparatus is adapted to enclose the first and second cable by means of an enclosure foil. 14. The apparatus according to claim 12, wherein the bundling apparatus is adapted for connection to both the first and second cable by means of a continuous snap lock. 15. The apparatus according to any one of claims 1-14, wherein the sensor means comprises a first sensor for measuring the movement of the first winch means, the first sensor, by means of the processing means, being connected to the control means of the second winch means, for controlling the speed of the second winch means dependent on the speed of the first winch means. 16. The apparatus according to any one of claims 1-15, wherein the apparatus is provided with a frame, the frame carrying a sheave for guiding the cables, wherein the bundling apparatus is positioned downstream of the sheave when regarding the cable movement during deployment. 17. The apparatus according to claim 16, wherein the sheave is provided with a double groove for accommodating both a first and a second cable, in order to synchronize the cable speed of both cables. 18. A clip, to be used with the apparatus according to any one of claims 1-17, wherein the clip is adapted to receive a first and a second cable, the clip being movable from a first position for receiving the cables and a second position, wherein the clip is closed for enclosing the cables. 19. The clip according to claim 18, wherein the clip is provided with a snap lock. 20. The clip according to claims 18, 19, wherein the clip is provided with two or more through holes, the through holes being adapted to receive opening and closing pins. 21. The clip according to any one of claims 18-20, wherein the clips comprise a relatively stiff section, for receiving a first cable, which stiff section adjoins a relatively flexible section, for receiving a second cable. 22. The clip according to claim 21, wherein the snap lock is provided in the relatively flexible section. 23. A vessel comprising the deployment apparatus according to any one of claims 1-17. 24. A method for deploying a load in a fluid with an apparatus, wherein the load is raised and lowered by means of at least first and second cables, wherein the first and second cables are connected in order to provide a single cable assembly before the cables are lowered using, for example, a clip according to any one of claims 18-22. 25. The method according to claim 24, wherein the cables are connected by means of discrete bundling elements. 26. The method according to claim 25, wherein the discrete bundling elements are interconnected by means of threads, wherein a further bundling element engages the cables by pulling the further bundling elements towards the cables by means of the interconnection, wherein the speeds of the cables are used for engagement of the further bundling element to the cable. 27. The method according to claim 24, wherein the cables are connected by means of a continuous bundling element. 28. The method according to claim 27, wherein the continuous bundling element has the form of a continuous snap lock element, that is adapted for receiving at least the first and second cables. 29. The method according to claim 28, wherein the cables are connected by means of braiding.