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Marine UXO Companies
UMag Solutions
Drone-Based Magnetic Detection Systems for Offshore Survey, Marine UXO & Subsea Target Detection
Gold Partner
Kraken Robotics
Industry-Leading Underwater Imaging and Power Solutions for Demanding Professional Survey Applications
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Marine & Offshore UXO Services
The Complete Guide to Marine & Offshore UXO Services
Introduction to Marine UXO Services
Marine Unexploded Ordnance (UXO) services encompass the risk assessment, detection, investigation, and clearance of explosive hazards located on or beneath the seabed. These services help identify and manage potential threats associated with historical military activity, naval mines, discarded munitions, and other Explosive Remnants of War (ERW), supporting the safe development and operation of offshore and coastal infrastructure.
Marine UXO surveys combine geophysical sensing, underwater inspection, positioning, and specialist Explosive Ordnance Disposal (EOD) expertise to locate, assess, and manage potential hazards. Offshore UXO services are used across wind farm development, subsea cable and pipeline installation, dredging, port construction, coastal engineering, and maritime defense operations.
Core Capabilities of Marine UXO Services
Marine UXO Risk Assessments
Marine UXO risk assessment services evaluate the likelihood of unexploded ordnance being present within a proposed development or operational area and consider the potential consequences of encountering it. Assessments draw on historical military records, previous survey data, seabed information, and planned project activities to identify potential hazards and determine whether further geophysical surveying, targeted investigation, or other risk mitigation measures are required.
Marine UXO Surveys
Marine UXO surveys use geophysical sensors to detect and map anomalies that may indicate unexploded ordnance on or beneath the seabed. Survey methods commonly include marine magnetometry, magnetic gradiometry, and acoustic imaging, with the most appropriate techniques selected according to anticipated target characteristics and environmental conditions. An offshore UXO survey produces georeferenced anomaly data that can be interpreted and classified to support subsequent investigation or clearance planning.
Underwater UXO Detection and Localization
Underwater UXO detection involves identifying potential ordnance targets and determining their positions accurately enough for subsequent relocation and investigation. Magnetic sensors can detect disturbances associated with ferrous objects, while sonar systems can identify exposed targets and relevant seabed features, with Global Navigation Satellite System (GNSS) receivers and underwater acoustic positioning equipment supporting georeferencing and target localization.
Ordnance Identification and Classification
Potential UXO targets are assessed using geophysical signatures, acoustic imagery, historical information, and direct inspection where appropriate. Specialists may evaluate characteristics such as estimated size, shape, orientation, and magnetic response to distinguish possible ordnance from debris or other seabed objects, although geophysical classification establishes only the likelihood that a target represents UXO and definitive identification may require investigation by qualified EOD personnel.
UXO Investigation and Verification
UXO investigation services examine selected geophysical anomalies to determine whether they represent explosive hazards, using methods such as Remotely Operated Vehicle (ROV) inspection, diver investigation, underwater imaging, and controlled sediment removal. Findings are documented using positional data, imagery, and specialist assessments to support target closeout, clearance decisions, or further investigation where identification remains uncertain.
Clearance Services and Explosive Ordnance Disposal (EOD)
Marine UXO clearance services address confirmed ordnance that presents an unacceptable risk to offshore or coastal activities. Qualified EOD teams assess appropriate treatment options, which may include avoidance, authorized recovery, relocation, or in-situ neutralization and disposal, with underwater clearance operations requiring specialist procedures, safety exclusion zones, environmental controls, and applicable regulatory approvals.
Marine UXO Survey Equipment & Technologies
Marine UXO detection and investigation services use a combination of magnetic, electromagnetic, acoustic, and optical technologies, with equipment selected according to anticipated ordnance characteristics, burial depth, seabed composition, water depth, and survey objectives.
The principal technologies used for marine UXO surveys and underwater investigation include:
- Marine Magnetometers: Measure variations in the Earth’s magnetic field to identify anomalies associated with ferrous objects, including steel-cased ordnance buried beneath the seabed.
- Marine Magnetic Gradiometers: Measure spatial differences in magnetic field strength using multiple sensors, helping detect and localize ferrous targets while reducing sensitivity to broader regional magnetic variations.
- Side-Scan Sonar Systems: Generate acoustic imagery of the seabed to identify exposed objects, debris, and surface features that may require further UXO investigation, although buried ordnance is generally not directly visible.
- Multibeam Echosounders: Produce bathymetric measurements and three-dimensional seabed models that support terrain assessment, identification of larger exposed objects, and planning of subsequent survey or investigation activities.
- Sub-Bottom Profilers: Use acoustic signals to characterize sediment layers and shallow subsurface structures, providing geological and burial context rather than reliable direct identification of ordnance.
- Electromagnetic Induction Sensors: Detect conductive metallic objects through their induced electromagnetic response, potentially supporting the detection and investigation of ferrous and non-ferrous targets where suitable underwater deployment systems are available.
- Underwater Cameras and Imaging Systems: Provide visual inspection of suspected UXO targets using ROV-mounted cameras, diver-operated equipment, and other subsea imaging systems.
Integrated survey operations may combine magnetic anomaly data, sonar imagery, and seabed mapping so potential targets can be assessed using several complementary datasets before further investigation is carried out.
Marine UXO Survey Platforms
Marine UXO survey companies deploy different surface, aerial, and underwater platforms according to water depth, survey area, sensor requirements, environmental conditions, and the level of target detail required. These platforms support activities ranging from broad-area geophysical surveys to close-range inspection, verification, and clearance support.
| Survey Platform | Typical Equipment | Marine UXO Applications |
| Drone-Based Survey Platforms | Unmanned Aerial Vehicle (UAV)-mounted magnetometers, cameras, and positioning systems | Aerial magnetic surveys over suitable shallow-water and intertidal areas, coastal reconnaissance, and preliminary hazard mapping |
| Crewed Survey Vessels | Towed magnetometers, gradiometers, sonar systems, and positioning equipment | Large-scale offshore UXO surveys, detailed geophysical investigations, and support for clearance operations |
| Unmanned Surface Vessels (USVs) | Towed or vessel-mounted magnetic sensors, sonar, and GNSS positioning | Remote geophysical surveying, shallow-water UXO detection, and surveys in areas where crewed vessel access is restricted |
| Autonomous Underwater Vehicles (AUVs) | Magnetometers, side-scan sonar, multibeam sonar, and inertial navigation systems | Autonomous seabed mapping, offshore magnetic surveys, and systematic geophysical coverage of potential UXO areas |
| Remotely Operated Vehicles (ROVs) | Underwater cameras, imaging sonar, manipulators, and positioning systems | Close-range target inspection, anomaly verification, and specialist support for UXO clearance |
| Diver-Based Survey and Investigation | Handheld detection equipment, underwater cameras, and inspection tools | Direct inspection, identification, and specialist investigation of suspected ordnance in suitable conditions |
Marine UXO Services Across Sectors
Offshore Renewable Energy
Offshore UXO services support wind farm development by assessing potential ordnance hazards around turbine foundations, offshore substations, and cable corridors. An offshore UXO survey for wind farms may be undertaken before geotechnical investigations, foundation installation, cable burial, or other seabed construction activities, with confirmed hazards managed through design changes, exclusion areas, or specialist clearance where required.
Subsea Infrastructure
Marine UXO surveys are carried out along proposed subsea cable and pipeline routes to identify hazards that could affect trenching, burial, or installation work. UXO risk management for offshore energy infrastructure may combine historical assessment, corridor surveying, target investigation, and localized clearance to support the safer installation of power cables, telecommunications cables, oil and gas pipelines, and associated subsea structures.
Defense and Maritime Operations
Marine UXO services support naval facilities, military training areas, historical ordnance sites, and maritime infrastructure projects where past military activity may have left explosive hazards. Surveys can investigate former minefields, naval firing ranges, discarded munitions, and conflict-related contamination, while specialist marine UXO and EOD services can support authorized disposal and wider maritime hazard mitigation operations.
Ports, Harbors, and Capital Dredging
Port development and capital dredging projects may require UXO surveys before excavation, channel deepening, or expansion of harbor infrastructure, particularly in areas with historical military or wartime activity. Marine UXO detection services can identify potential explosive hazards within planned dredging footprints so selected anomalies can be investigated and, where necessary, cleared before seabed disturbance begins.
Coastal Engineering and Land Reclamation
Coastal construction, land reclamation, and shoreline protection projects may encounter historical ordnance within nearshore sediments, intertidal zones, and reclaimed seabed areas. Marine UXO risk assessments and surveys help identify potential hazards before excavation, piling, sediment removal, or seabed preparation, with mitigation measures potentially including further investigation, construction exclusion zones, design changes, or specialist disposal.
Selecting a Marine UXO Services Provider
Selecting a marine UXO services provider requires consideration of technical capabilities, relevant offshore experience, available survey platforms, and the ability to manage explosive hazards through the required stages of the project lifecycle. Marine UXO companies may specialize in geophysical surveying, risk assessment, underwater investigation, or EOD, while others provide integrated services covering several or all of these activities.
Key considerations when evaluating providers include:
- Experience in Marine UXO Surveys and Clearance: Demonstrated experience with comparable offshore environments, ordnance hazards, survey conditions, and project requirements.
- Survey Technology and Sensor Capabilities: Availability of appropriate magnetic, electromagnetic, acoustic, and underwater inspection equipment for the anticipated targets and seabed conditions.
- Offshore Vessel, AUV, and ROV Capabilities: Access to suitable survey platforms, positioning systems, and subsea intervention equipment for broad-area surveys and targeted investigations.
- UXO Identification and EOD Expertise: Qualified personnel capable of investigating potential ordnance and carrying out authorized clearance or disposal operations where required.
- Detection Performance and Survey Coverage: Ability to establish appropriate target detection requirements, survey line spacing, sensor configurations, positioning accuracy, and data quality assurance procedures.
- Environmental and Regulatory Compliance: Procedures for managing offshore safety, marine permitting, environmental impacts, and applicable explosive ordnance requirements throughout the project.
- Data Processing and Reporting Capabilities: Provision of geophysical datasets, anomaly lists, georeferenced target positions, investigation records, and UXO risk management reports suitable for project decision-making.
- Offshore Project Mobilization and Operational Support: Capacity to deploy personnel and equipment within project schedules and coordinate effectively with offshore construction, marine operations, and other project teams.
The most appropriate provider depends on whether the project requires preliminary marine UXO risk assessment, a detailed underwater UXO survey, targeted anomaly investigation, or complete clearance and disposal services.
