Remotely Operated Vehicles (ROVs) are tethered underwater robotic systems that enable real-time control, imaging, sensing, inspection, and intervention during subsea operations. ROV systems range from portable mini and observation-class vehicles to work-class, crawler, towed, and hybrid platforms.
This category showcases underwater ROV manufacturers offering platforms for offshore energy, marine research, aquaculture, infrastructure assessment, and other subsea applications.
Read the Technology Overview
Autonomous and Unmanned Marine Vehicles: USV, AUV, Marine ROV; Profiling Floats & Towed Systems
Hybrid Underwater Robotic Systems for Subsea Use in Civilian, Security & Defence Sectors
Integrated Systems & Payloads for Unmanned Surface & Underwater Platforms Operating in Complex Maritime Environments
Cinematic Underwater Robotic Vehicles (ROV & AUV) for Inspections, Observation and Videography
If you design, build or supply Remotely Operated Vehicles (ROV), create a profile to showcase your capabilities and connect with visitors who have an active requirement for your solutions.
Remotely Operated Vehicles (ROVs) are tethered underwater robots used across offshore energy, marine science, infrastructure inspection, and defense. Unlike Autonomous Underwater Vehicles (AUVs), which operate independently using pre-programmed missions and onboard navigation, ROVs remain connected to a surface vessel or control station by a tether or umbilical. This connection enables operators to pilot the vehicle in real time, receive continuous video and sensor data, and control tools or manipulators during complex subsea tasks.
Although many vehicles can be configured for multiple roles, the industry generally categorizes ROVs in two ways:
Understanding both perspectives helps engineers, operators, and project teams choose the right vehicle for the task.
Also known as: Micro ROVs, Small ROVs, Compact ROVs, Lightweight ROVs, Miniature ROVs, Portable ROVs, Eyeball-class ROVs
Mini ROVs are compact, portable systems designed primarily for visual inspection in confined, shallow, or low-risk environments. They are often operated from small vessels, pontoons, or even shore-based locations and can be deployed quickly with minimal crew and infrastructure. Payload options are typically limited to cameras, lights, and basic sonar. Still, their low cost and ease of use make them popular for inland waterways, aquaculture, basic hull checks, and rapid assessments.
SRV-8 MDV by Oceanbotics
Also known as: Observation ROVs, Inspection ROVs, Inspection-class ROVs, Survey-class ROVs
Inspection ROVs occupy the middle tier of capability. They are larger and more potent than mini systems, offering better stability, higher-quality imaging, and the ability to integrate sensors such as multibeam sonar, laser scanners, and positioning aids.
They are widely used for structural inspections, environmental monitoring, and survey tasks that require detailed situational awareness but do not require heavy intervention tools. Survey-configured variants may support metrology, seabed mapping, or bathymetric work.
Work-class vehicles are built for demanding offshore missions where payload capacity, stability, and power are critical. They operate at greater depths, support multiple manipulators, and integrate advanced control systems and heavy tooling. Advanced buoyancy modules, often based on depth-rated syntactic foam, are used to maintain neutral buoyancy and vehicle stability while accommodating heavy tooling and sensor payloads.
Also known as: Utility ROVs, Medium-duty ROVs
Light work-class platforms bridge the gap between inspection and full intervention vehicles. They offer more thrust, improved payload options, and limited tooling capability, making them suitable for general utility work, light construction support, and more complex inspections.
Also known as: Heavy-duty work ROVs, Construction-class ROVs
Heavy work-class systems are designed for intervention and construction in deep and harsh offshore environments. They routinely carry dual manipulators, hydraulic tools, cutting systems, torque tools, and specialist subsea interfaces. These vehicles are standard in oil and gas, offshore wind, and subsea construction programs.
Also known as: Underwater Crawler ROVs, Tracked ROVs, Underwater Tracked Vehicles
Crawler ROVs use tracks, wheels, or other contact-based locomotion to travel across the seabed or along submerged structures rather than relying solely on thrusters for free-swimming movement. This configuration provides stability and sustained contact with an inspection surface, particularly where tooling, cleaning, non-destructive testing, or close-range sensor measurements are required.
They are used for applications including pipeline and cable inspection, hull and tank inspection, seabed intervention, cleaning, and other tasks where maintaining consistent contact with a structure or surface is advantageous.
Also known as: Towed ROVs, Remotely Operated Towed Vehicles
ROTVs differ from conventional free-swimming ROVs because they are towed behind a surface vessel while their position or flight path can be actively controlled. This architecture is particularly suited to continuous survey missions, where an ROTV can carry cameras, sonar, oceanographic instruments, and other sensing payloads through the water column or above the seabed.
While class describes the platform, the application describes the mission configuration. A single vehicle can often serve multiple roles by swapping payloads and tools.
Deep Trekker’s REVOLUTION Remotely Operated Vehicle
Configured to interact physically with subsea equipment, including operating valves, inserting tools, connecting hoses, and supporting repairs. Commonly fitted with manipulators, torque tools, and hydraulic interfaces. Specialized intervention configurations include refueling ROVs equipped to support subsea refueling or fluid-transfer operations using manipulators, connectors, hoses, cameras, and positioning systems.
Support installation and commissioning of subsea structures, assisting crane operations, guiding placements, monitoring alignment, and performing final checks.
Optimize long-term asset integrity tasks. They combine high-quality inspection tools with manipulators and the capability for light intervention.
Purpose-built for cutting or fluidizing seabed material to create trenches for cables and pipelines. Often equipped with jetting or mechanical cutting systems.
Specialized vehicles that reposition or bury assets after installation. They may follow a laid route and ensure a compliant burial depth for protection.
Engineered for extreme depth and pressure environments. These systems focus on reliability, redundancy, and specialized materials to enable scientific exploration and deep-ocean industrial work.
Science, research, and cinematography ROVs can be configured for sampling, habitat observation, oceanographic measurements, underwater filming, broadcasting, documentary production, and visual surveying. Scientific systems typically include sensors, sampling baskets, and precise station-keeping, while cinematography configurations may prioritize stable movement, low acoustic disturbance, high-quality camera payloads, lighting, and precise positioning.
VideoRay’s compact Mission Specialist Ally ROV
Aquaculture ROVs are used to monitor, inspect, and maintain fish-farming infrastructure, including nets, cages, moorings, and feeding systems. They help operators assess stock health, detect damage or biofouling, and verify mooring integrity without the cost and risk of diver intervention. Many aquaculture-focused ROVs prioritize maneuverability, portability, and camera quality, making them well-suited for daily farm operations and routine compliance inspections.
Used for search, recovery, rescue support, and forensic assessment of wrecks, lost equipment, or underwater incidents. They may integrate grab tools, lifting aids, manipulators, sonar, and high-detail imaging to locate and recover objects or support diverless response operations.
Pipeline and cable inspection ROVs are typically outfitted with sonar, cameras, lasers, and tracking tools to follow, document, and assess the condition of subsea pipelines and cables, including fault localization and burial verification.
Designed for reactor pools and contaminated environments. Emphasize radiation-tolerant materials, compact size, and precise control.
Also known as: Military ROVs, Tactical ROVs
Tactical ROVs support naval missions, including mine detection, investigation, and neutralization, often in hazardous or shallow environments where divers cannot operate.
Port Security ROVs support maritime law enforcement and harbor authorities by enabling rapid underwater investigation in busy, confined, and low-visibility environments. They are used to inspect vessel hulls, piers, and quay walls for hazards, contraband, and structural issues without disrupting port operations or putting divers at risk. These systems often integrate imaging sonar, high-definition cameras, and optional manipulator tools to document findings and support incident response.
Boxfish ROV by Boxfish Robotics
Explosive Ordnance Disposal vehicles adapted for underwater tasks, enabling remote assessment and safe handling of unexploded ordnance.
Operate inside intake tunnels, penstocks, tanks, reservoirs, storage vessels, and long conduits with limited visibility and constrained maneuvering space. Tank and reservoir inspection ROVs can examine internal surfaces, sediment buildup, corrosion, coatings, and structural conditions while reducing the need for draining or diver entry.
Also known as: Autonomous ROVs, Hybrid Underwater Vehicles
Combine tethered operation with autonomous modes. They can perform extended surveys as AUVs, then reconnect or operate tethered for intervention.
Remain docked subsea for weeks or months, ready for on-demand deployment. Ideal for facilities requiring frequent inspections without repeated vessel mobilization.
Operate with long tethers or TMS systems, allowing significant lateral range from the deployment point.
Launched within a Tether Management System (TMS), improving handling in deep water and harsh currents while protecting the primary umbilical.
Launch and Recovery Systems (LARS) are purpose-built handling systems that deploy and retrieve ROVs safely in varying sea states. Typical setups include A-frames, cranes, winches, and guided docking systems that stabilize the vehicle as it enters or leaves the water. LARS units are often integrated with tether management systems (TMS) to protect the umbilical and reduce loads on the vehicle, improving safety, repeatability, and operational uptime during offshore missions.
ROVs can carry a wide range of interchangeable payloads depending on the mission, available power, vehicle size, and integration interfaces. Common payloads include:
Underwater ROV deployment is influenced by industry standards and best practices related to electrical safety, pressure testing, electromagnetic compatibility, and environmental protection. In defense and government programs, alignment with relevant military and maritime specifications supports interoperability and operational assurance. For commercial and research users, adherence to recognized subsea standards supports safe operations, system longevity, and regulatory compliance across diverse operating environments.
As underwater operations continue to expand across energy, defense, infrastructure, and scientific domains, remotely operated vehicles remain a foundational capability within the broader unmanned underwater systems ecosystem.
Searching Companies & Products
Subscribe to the Weekly eBrief
The latest engineering and technical developments straight to your inbox - join thousands of engineers who receive it.
