Underwater inspection services use ROVs, AUVs, and other unmanned underwater vehicles to assess submerged assets, infrastructure, and environments using cameras, sonar, laser scanners, NDT instruments, and other inspection payloads.
This page features AUV and ROV inspection services for structural inspection, pipeline and cable surveys, offshore infrastructure assessment, port inspection, and ship hull examination.
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Underwater inspection services use Remotely Operated Vehicles (ROVs), Autonomous Underwater Vehicles (AUVs), and other Unmanned Underwater Vehicles (UUVs) to assess submerged assets, infrastructure, and environments without relying solely on divers. These systems can carry cameras, sonar, laser scanners, Non-Destructive Testing (NDT) instruments, and other inspection payloads to collect visual, acoustic, dimensional, and condition-monitoring data.
Unmanned underwater inspection is used across offshore energy, marine infrastructure, shipping, ports, subsea construction, and pipeline and cable operations. Depending on the mission, ROV inspection services can provide live operator-controlled examination of individual components, while AUV inspection services are better suited to longer-range autonomous operations, repeated routes, and wider-area coverage.
Underwater structural inspection assesses submerged components for corrosion, deformation, cracking, coating degradation, marine growth, damaged connections, and other signs of deterioration. Subsea structure inspection may combine visual imaging with sonar, laser measurement, ultrasonic testing, or other sensing methods where more detailed dimensional or material-condition data is required.
Pipeline inspection services and cable inspection services are used to examine long linear assets and their surrounding routes for exposure, burial condition, free spans, displacement, external damage, seabed interaction, and nearby hazards. ROV pipeline inspection is particularly well suited to close examination of specific sections, while AUV pipeline inspection and AUV cable inspection can provide more efficient coverage of longer routes.
Offshore inspection services cover subsea and partially submerged infrastructure including platform jackets, risers, flowlines, umbilicals, mooring systems, subsea equipment, and offshore wind foundations. Offshore platform inspection and subsea riser inspection may combine close-range imaging with sonar, cathodic protection measurement, or underwater thickness measurement to document asset condition and identify areas requiring further assessment.
Marine inspection services can be used to inspect bridge foundations, piles, piers, jetties, seawalls, dams, intake structures, and other underwater infrastructure. Robotic underwater inspection is particularly useful where access is restricted, water depth or conditions increase risk, or repeated inspections are required to monitor changes in structural condition over time.
Ship hull inspection uses underwater cameras, sonar, and other sensors to examine hull plating, propellers, rudders, thrusters, intakes, and associated structures. For selected inspection tasks, ROV hull inspection can support underwater hull assessment without dry docking, while imaging and sonar data can document fouling, damage, corrosion, and other visible conditions.
ROVs remain widely used for subsea inspection services because they provide live control, continuous communications, and real-time video or sensor feedback through a tether. This makes ROV inspection particularly effective for close visual inspection, ROV sonar inspection, ROV NDT inspection, contact measurements, and detailed examination of complex structures where precise positioning is important.
AUVs conduct pre-programmed or adaptive missions without continuous tethered control, allowing them to inspect larger areas or long routes more efficiently. AUV inspection services are therefore well suited to pipeline corridors, cable routes, offshore assets, seabed infrastructure, and other missions where autonomous coverage, repeatable navigation, and wider-area data collection are important.
Underwater crawlers operate in direct contact with surfaces such as ship hulls, storage tanks, pipelines, or other submerged structures, giving them a stable platform for close inspection. This contact can support detailed imaging, ultrasonic inspection, thickness measurement, and other NDT tasks where consistent sensor positioning against the inspected surface is important.
Hybrid UUVs combine characteristics of autonomous and remotely operated platforms, allowing a single vehicle to support different phases of an inspection mission. Some systems can perform autonomous transit or survey before switching to direct operator control for detailed inspection, combining broad-area data collection with close-range subsea robotic inspection.
The payload selected for an underwater inspection depends on the asset being assessed, the measurement required, visibility, operating depth, and the level of detail needed from the resulting data.
| Sensor or Payload | Primary Inspection Role | Typical Outputs |
| Subsea cameras and lighting systems | Visual inspection of surfaces, components, and damage | Images and video |
| Sonar | Imaging and detection in poor visibility | Acoustic imagery and maps |
| Laser scanners and profilers | Dimensional measurement and surface mapping | Profiles, point clouds, and 3D data |
| Ultrasonic thickness measurement | Measuring remaining material thickness | Thickness readings |
| Cathodic protection measurement | Assessing corrosion protection systems | Electrical potential measurements |
| Magnetic and electromagnetic NDT sensors | Detecting selected defects, corrosion, or material anomalies in suitable components | Sensor responses and anomaly data |
| Environmental and water-quality sensors | Measuring local water conditions that may support inspection and asset monitoring | Temperature, conductivity, turbidity, and other parameters |
| Acoustic positioning and monitoring systems | Supporting vehicle positioning, ranging, tracking, or asset monitoring | Range, position, tracking, and acoustic measurement data |
These sensors may be deployed individually or combined into integrated payload suites where underwater inspection services require multiple complementary data types from the same mission.
AUV and ROV inspection services can produce a range of outputs depending on the sensors, positioning systems, and processing methods used during the mission.
Positioning accuracy and consistent data acquisition are particularly important when inspection results are intended to be compared across multiple survey cycles.
The appropriate platform, sensors, and operational approach depend on the asset, inspection objective, environment, and type of data that must be collected.
ROVs are generally strongest where close operator control and detailed examination are required, while AUVs are often advantageous for autonomous coverage of larger areas and long linear infrastructure.
Unmanned inspection services are increasingly incorporating greater autonomy, persistent deployment, and automated data analysis to support more frequent and repeatable assessment of subsea assets.
Together, these developments are expanding the role of ROVs, AUVs, and other UUVs from periodic underwater inspection tools toward more persistent subsea inspection and asset-monitoring systems.
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