Subdredge ROV – Remote Operated Submersible Dredge

Trailer, skid, or stationary mounted self-priming pump setup. Buy or Rent.


U.S Army Engineer Research and Development Center (ERDC) and
The Army Corps Review The Subdredge AKA The MRSD

ERDC talks about the EDDY Pump Subdredge, their dredging uses and future plans. The Army Corps call their tan colored version The Mini-Robotic Submersible Dredge or MRSD. They highlight some of the research done in conjunction with EDDY Pump and talk about the deployment options of the subdredge. EDDY Pump sells a commercial version of this unit and is the OEM.

The Subdredge will be important in Logistics Over-the-Shore (LOTS) operations. Navy and Army conduct LOTS operations and will be end users for these projects.


EDDY Pump Subdredge, as seen on the Discovery Channel and used by the Army Corps of Engineers. This state of the art subsea dredging system is unique to the market and is changing how companies dredge waterways, mine gold and perform sediment removal. Also ideal for large settling tank cleanout, pond desludging and pumping dangerous sludge or materials. Improve your safety profile in dangerous situations.

The Army Corps have adapted the Subdredge for use under the name Mini Robotic Submersible Dredge or MRS-D, of which EDDY Pump is the OEM source. 

All equipment is Powered by EDDY Pump dredge pumps, which are also available for slurry transport dredge projects. See the pump page for specific information.

Agitation Options: A Cutterhead OR high power water jetting ring is available, depending on the dredge application.

The Subdredge is a remote operated submersible dredge (ROV) that can be powered hydraulically or electrically with pump sizes ranging from 4-inch up to 10-inch with production rates of up to 4500 GPM or 400 cubic yards of material per hour.  The Subdredge is equipped with an umbilical that allows for it to operate remotely at distances of up to 1000-ft or greater from the operator. With smart technology, the system can be operated or serviced remotely from anywhere on the planet.

The Subdredge is ideal for dredging applications that call for great depths, precision dredging, unmanned operation, and liner dredging to name a few.  This dredge costs a fraction of the cost of conventional dredges and can handle a larger variety of dredging applications. Increasing your ROI by design and increasing safety by removing humans from harmful situations.


The EDDY Pump Subdredge was Featured on Bering Sea Gold. Cutterhead or Water Jetting Ring Options for Agitation. Call for details. 

Sub Dredge - Remote Operated Submersible Vehicle seen on Bering Sea Gold

All EDDY dredges use our industrial pumps, which are non-clog pumps designed for high solids pumping applications. Our patented pump technology outperforms all centrifugal, vortex and positive displacement pumps in a variety of the most difficult pumping applications.

EDDY Pump submersible gold dredge was “Alaska tested”, on the Discovery Channel show Bering Sea Gold, see More.

The core of this technology is the patented EDDY Pump technology that redefines the pumping industry, by being the only pump that utilizes the principles of a tornado to create a synchronized eddy current. This pump is not a centrifugal, positive displacement, or vortex pump, but instead the most highly efficient high solids and high specific gravity pump on the market. This translates to the ability to pump higher percent solids of material and capture the heavy specific gravity gold. With references from Bering Sea Gold, referring to it as the Golden Sea Horse Dredge, there are truly no limits for this Subdredge.

Another EDDY Pump alternative to the Subdredge is the 5-cable floating autonomous dredge. Also unmanned and remote-operated, see Autonomous Dredge HERE.

All EDDY Pump dredges use our patented USA Built industrial pumps. Since 1984

After 4-weeks of operation under the 5-foot thick ice of Nome, Alaska, the Subdredge can truly be seen as the new wave of the future in underwater gold mining and will soon be seen by millions on the Discovery Channel!

To learn more about the technology behind our pumps continue reading more HERE.

Subdredge Discovery Channel Video Highlight

We are one of the few companies who manufactures both our pumps and dredging equipment to ensure optimal support.

MRS-D Army Corps of Engineers – ROV Test Video & Images

Army Corps of Engineers Testing

Photo series of a recent test carried out for the Army Corps of Engineers with the help of the EDDY Pump Corporation for the MRSD version of the Subdredge.

Features and Benefits

Remote Operated Submersible Dredge

EDDY Pump Advantages

  • Non-Clog, High Viscosity, High Specific Gravity, High Abrasives, Low pH Pumping Design
  • 30-70% Solids Pumping by Volume
  • Ability to pump objects of up to 12-inches in diameter
  • 100% American Built
  • State-of-the-Art Research and Development Facilities on site
  • Easily process rags, string, rocks and foreign objects


  • 700-5000 gpm (Up to 500 yd3 per hour)
  • Dredging Depths of up to 1000ft
  • Liner Safe Dredging (Clay, Poly, Concrete,etc)
  • Hydraulic or Electric Driven
  • Various Power Sources (ex. Skid Steer)
  • Cutter-Head and Non-Clog Head Configurations
  • Water jetting ring is a custom option
  • Remote-Operated Unmanned Operation
  • 172″ long x 62″ wide x 60″ tall; 4800lbs or larger for larger pumps

Pump Features

  • Non-Clogging Design
  • High Solids Handling
  • High Viscosity and Specific Gravity Handling
  • High Abrasives Handling
  • No Critical Tolerances
  • Low Maintenance
  • Minimal Downtime
  • Low Ownership Costs

The Best Non-Clog and High Solids Slurry Pump on the Market. Since 1984.

Best Applications for the Subdredge ROV: Dangerous environments, poly lined ponds and deep underwater operations. If you are pumping high solids, slurry, extremely viscous material, high abrasives (sand & gravel) and material filled with solids then you found the ideal pump for your job.

Industries Most Served: Mining, Oil and Fracking, Waste Water, Paper/Pulp, Chemical, Energy, Water Districts, Irrigation Districts and Dredging Companies. 


submersible unmanned dredge cutterhead view


Phillip R., Senior Engineer of the Subdredge ROV – Testing in Alaska

Subdredge at Power Plant. Tracks are Liner Safe

Autonomous Floating Dredge – Remote Operated

The Autonomous Floating Dredge. An alternative to the Subdredge which lives on the sea floor or lake floor, we have a floating dredge option. This floating platform is controlled by a cable system and can be stationary or dredge a programmed pattern. Learn More…

Frequently Asked Questions

What is the Subdredge, and how does it work?
The Subdredge is a state-of-the-art dredging system designed for efficient and effective removal of sediment, sludge, and debris from underwater environments. It utilizes a powerful pump system and innovative technology to suction and transport material through a hydraulic slurry pump and discharges it to the desired location.

What are the main applications of the Subdredge?
The Subdredge is widely used in various applications, including maintenance dredging of rivers, lakes, and ponds, environmental remediation, industrial cleaning, mining operations, and infrastructure projects such as pipeline and cable trenching.

What sets the Subdredge apart from other dredging equipment?
The Subdredge stands out for its superior performance, versatility, and reliability. Its unique design features a high-powered dredge pump, submersible hydraulic thrusters for precise maneuverability, and advanced control systems for efficient operation in diverse conditions.

What types of materials can the Subdredge handle?
The Subdredge is capable of handling a wide range of materials, including sand, silt, mud, sludge, gravel, and various industrial waste products. Its robust construction and powerful pump system allow it to dredge and pump even the toughest sediments effectively.

What are the depth capabilities of the Subdredge?
The Subdredge is capable of operating at depths of up to [insert depth here] feet (or meters), depending on the specific configuration and requirements of the project. Its submersible design enables it to reach depths that traditional dredging equipment cannot access.

How is the Subdredge controlled and operated?
The Subdredge is controlled and operated by trained personnel using an intuitive control panel and joystick system. Its hydraulic propulsion system provides precise maneuverability, allowing operators to navigate through confined spaces and tight corners with ease.

What are the environmental benefits of using the Subdredge?
The Subdredge is designed to minimize environmental impact while maximizing efficiency. Its advanced dredging technology reduces turbidity and sediment disturbance, helping to protect aquatic ecosystems and minimize disruption to marine life during dredging operations.

Is the Subdredge available for purchase or rental?
The Subdredge is available for both purchase and rental options to suit the specific needs and budget of our customers. Our team of experts is available to provide guidance and support throughout the selection process to ensure optimal performance and satisfaction.

What is a submersible dredger?
A submersible dredger, such as the Subdredge, is a type of dredging equipment designed to operate underwater. It is equipped with a submersible pump that allows it to efficiently remove sediment, sludge, and debris from the bottom of water bodies while remaining submerged during operation.

What is the principle of dredging?
The principle of dredging involves the excavation and removal of sediment, silt, and other unwanted materials from the bottom of water bodies to maintain or improve navigability, restore ecosystems, and facilitate construction projects. Dredging typically utilizes specialized equipment, such as dredgers, pumps, and pipelines, to remove and transport the dredged material to a designated disposal area.

What material is used in dredgers?
Dredgers are typically constructed using materials that are durable, corrosion-resistant, and able to withstand the harsh conditions encountered in dredging operations. Common materials used in dredger construction include steel, aluminum, and composite materials.

How many types of dredgers are there?
There are several types of dredgers designed for specific dredging applications and operating conditions. Some common types include cutter suction dredgers, trailing suction hopper dredgers, bucket dredgers, and submersible dredgers like the Subdredge.

Where is dredging most commonly used?
Dredging is most commonly used in various water bodies and marine environments, including rivers, lakes, harbors, ports, canals, and coastal areas. It is employed for a wide range of purposes, such as maintaining navigation channels, reclaiming land, replenishing beaches, and conducting environmental remediation.

What are the classifications of dredgers?
Dredgers can be classified based on their method of excavation, propulsion system, and operational capabilities. Common classifications include mechanical dredgers, hydraulic dredgers, and pneumatic dredgers, each with unique features and advantages suited to different dredging tasks.

What are the largest dredgers?
The largest dredgers in the world are typically cutter suction dredgers and trailing suction hopper dredgers used for large-scale dredging projects in deep-water environments. These dredgers can have impressive dimensions, with dredging capacities ranging from thousands to millions of cubic meters of material per hour.

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