The global demand for sustainable seafood is driving the rapid expansion of marine ranches and deep-sea aquaculture. However, traditional harvesting methods—relying heavily on commercial divers—are dangerous, labor-intensive, and strictly limited by weather, depth, and water currents. To modernize this industry, the DH-R220 serves as an advanced marine ranch underwater robot, transforming risky manual tasks into precise, automated subsea operations.

Powerful Thrust and Superior Current Resistance Marine ranches are typically located in open water where strong tidal currents are a constant challenge. A stable platform is absolutely essential for accurate observation and harvesting. The DH-R220 features a vector layout of eight thrusters, delivering a robust 540W of power. This configuration provides an exceptional maximum current resistance of 3 knots and a normal operating speed of 5 knots. Even in rushing water, this marine ranch underwater robot remains incredibly steady, ensuring the mechanical arm can operate without drifting off target. Its bionic low-drag frame further reduces water impact, enhancing overall posture stability.
Dual-Axis Manipulator for Active Harvesting Unlike basic observation ROVs, the DH-R220 is built for physical intervention. It is equipped with a dedicated 2-degree-of-freedom (2-DOF) mechanical arm paired with an onboard collection basket. This dexterous system allows for continuous underwater grabbing and sampling in a single dive. Whether the task is harvesting sea cucumbers, collecting scallops, or retrieving lost aquaculture equipment, the robot streamlines the operation, eliminating the need to surface between grabs and dramatically increasing daily harvesting efficiency.
High-Definition Vision and Robust Endurance Visibility in marine ranches can often be compromised by algae and sediment. The DH-R220 is equipped with a 1080P HD camera and a customizable visual recognition system. To penetrate the darkness, it utilizes a matrix LED lighting design, with each single light providing a brilliant 1,500 lumens. Powering these operations is a substantial 33,600mAh (497.28Wh) battery, delivering up to 3 hours of continuous operation. The 100-meter tether cable has a tensile strength of 500kg, ensuring safe recovery, while the dual-link data backup (network and local storage) guarantees that critical footage and sensor logs are never lost.
Why It Matters for Aquaculture Operators By deploying the DH-R220 marine ranch underwater robot, operators eliminate the severe safety risks associated with commercial diving and significantly reduce long-term labor costs. It provides a highly maneuverable, stable, and smart solution for cage inspection, marine life observation, and direct harvesting. As the aquaculture industry moves toward automation and precision, this powerful ROV ensures higher yields, safer operations, and a more sustainable future for marine ranching.