Basic Design Of Fish Cage In Deep Water

Our country has a big in aquaculture. The yield of aquaculture almost is two thirds of the global output. Our country is the only country that the yield of mariculture is bigger than the yield of catching. However, following the increase of the population and living quality, the quantity demanded increase, too. At the same time, immoderate catching of fish and unlimited discharge of sewage cause the environmental pollution and the recession of fishery resources. In fact, a large portion of nature area of water that the cultivation facility is inefficient has a more and more serious contradiction at the present stage. In this condition, the aquaculture of our country is pushed to the deep water.The fish cage in deep water is a large facility on the sea, which is able to resist the force of the natural. It expands the area of cultivation and improve the quality of aquatic product. At the same time, the fish cage in deep water get a more weight,larger force from the natural.This paper introduced the equipment, category and select, process of cultivation,supporting facility and theory of the cultivation technique in fish cage and do the basic design of buoyancy system and mooring system of the fish cage on the basis of our country’s conditions by the oceaneering technology. Choosing the catenary mooring system and calculate the relevant parameter. Choosing the Compound foam materials has character of high strength, low density, corrosion resistance, low water absorption. It offers enough buoyancy for the fish cage in deep water. It enhances the fish cage’s loading, decreases fish cage’s basic size, increases the structural performance of fish cage. Promoting the aquaculture industry of our country.