Development of a Submersible Fish Cage for Open Ocean Aquaculutre

A need exists to develop cost effective and reliable submersible cage technology for exposed aquaculture. The team assembled as part of this SBIR incorporates JPS Industries, Great Bay Aquafarms and the University of New Hampshire. In Phase I, a design will be developed based on concepts known to work in the industry. Concepts to be investigated include a cage constructed around HDPE pipe, with an airlift so the system can move through the water column. Feeding, monitoring and control/telemetry will be performed with a surface buoy with a connection to the cage using a high-stretch hose. Analysis will include hydrostatics and development of hydrodynamic loads. Cage structural integrity will also be examined. Specification of components will be made in preparation for construction and deployment in Phase II where the cage will be tested in the first year stocked with cod in the second year, focusing in the live fish market and to develop harvesting techniques.