Gravity-type deep-sea cage technology has made significant strides, driving the expansion of aquaculture operations from nearshore to offshore waters. The future of the industry will see continuous development toward intelligent, green, and intensive practices, with technological innovation remaining the core driving force.
Summary of Technological Advances
Material Upgrades: Breakthroughs in high-strength polyethylene netting materials have increased tensile strength by 40% and extended service life to 5-8 years.
Equipment Support: Automated feeding systems achieve an accuracy rate of 98%; underwater monitoring systems enable real-time observation of fish behavior; and new net-cleaning robots have tripled operational efficiency.
Culture Techniques: Technical specifications for deep-sea cage farming of various fish species have been established, leading to a 25% improvement in feeding efficiency and a 15% reduction in the grow-out cycle.
Current Challenges and Countermeasures
Structural Durability: The corrosion resistance and fatigue performance of cage structures still require enhancement. It is recommended to adopt new materials like aluminum alloys and strengthen cathodic protection systems.
Intelligent Decision-Making: The data analysis capabilities of farm management platforms are insufficient. The introduction of artificial intelligence algorithms to establish aquaculture decision-making models is advised.
Ecological Impact: To minimize self-pollution from farming, there is a need to develop sedimentation-based waste collection systems and feed residue recovery devices.
Future Development Pathway
Equipment Upgrade Path: Priority should be given to large-scale cages with strong storm resistance and a high degree of automation, with a single-cage volume of ≥10,000 m³.
Intelligent System Development: Phased introduction of systems for underwater monitoring, automated feeding, and remote control, aiming to establish a digital farm management platform within 3-5 years.
Industry Integration: Build an integrated industrial chain encompassing “equipment manufacturing – fry & feed – farm management – processing & sales” to enhance overall benefits.
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