摘要 |
<p>The invention provides a deep-water fish farming system comprising a fish cage (200) of controllable buoyancy having one or more chambers (202), which can be submerged and refloated at a controllable rate to any depth. A winch mechanism (214) mounted preferably on a platform (210) that covers a section of the cage (200) release and gathers a cable (212) connected to a sinker (216). When the combined weight of the system overcomes the buoyancy, the fish cage (200) is submerged to a depth determined by the effective length of the cable (212) between the winch mechanism (214) and the sinker (216), with the sinker (216) touching the sea bottom. When the cage (200) is refloated to the surface, the buoyancy is increased to allow pulling of the sinker (216) from the bottom. The invention further provides a method for submerging an raising a fish cage (200) at a controlled rate to any desired depth in deep water.</p> |