| 摘要 |
A submersible fish-farming platform 5a, particularly for shellfish such as mussels, oysters, scallops and like marine molluscs, comprises a frame having one or more chambers 40a of adjustable buoyancy retained in association therewith, the frame further having means for retaining fish stocking means therebelow, the platform being adapted to be submersible to a chosen depth and retained substantially thereat by means of the one or more chambers. Buoyancy control is by way of air supply via valve 70a which controls the amount of water entering the bottom of chamber 40a. The shellfish may be suspended in lantern nets (250b, Fig 3) or attached to ropes. The platform has a permanent buoyancy hose 30a sufficient to maintain the platform on the surface for maintenance or husbandry purposes. Access to the platform is via a walkway 110a. Means may be provided to improve the flow of nutriet / plankton rich water to shellfish stock suspended from the platform (Figs 17-21). An incubator may be provided within the adjustable buoyancy chamber to improve the food supply available to the stock. |
