Ashtead Technology Inc
About
Ashtead Technology is a UK-based international subsea equipment rental and solutions provider founded in 1985, publicly traded on the London Stock Exchange AIM, with a fleet exceeding 23,000 rental assets across 12 global hubs and approximately 650 employees. The company operates through three divisions — Survey and Robotics, Mechanical Solutions, and Asset Integrity — serving offshore energy, renewables, and infrastructure sectors. Its environmental division, established in 2003 and based in Bedfordshire, UK, provides rental, sales, and calibration of monitoring instrumentation for groundwater and surface water applications. Water quality products include multiparameter meters, peristaltic pumps for low-flow sampling, oil and water interface probes for detecting hydrocarbon layers in monitoring wells, CTD sensors measuring conductivity-temperature-depth, SVP sound velocity profilers, ADCPs for current profiling, and waverider buoys for metocean monitoring. On the mechanical side, Ashtead supplies subsea dredging systems in 4-inch through 12-inch configurations (electric, hydraulic, and airlift), subsea cutting systems, marine growth removal equipment, and leak detection systems for pipeline infrastructure. The company also delivers remote operations services from centers in the UK and Canada, providing real-time underwater inspection without on-site personnel. Calibration services cover environmental instruments from Inficon, RAE Systems, Testo, and TSI. While not a manufacturer — Ashtead sources equipment from leading OEMs worldwide — the company adds value through fleet readiness, technical support, and bespoke engineering for custom subsea challenges.
Key Products
Multiparameter in-situ measurement of groundwater and surface water quality parameters (rental)
Low-flow water sampling pumps for groundwater and remediation projects (rental)
Detects hydrocarbon product layers in groundwater monitoring wells
Measure seawater conductivity, temperature, and depth from ROV or vessel-mounted platforms
Measure sound velocity in seawater for hydrographic survey corrections
Acoustic Doppler Current Profilers measure ocean current speed and direction profiles
Measure wave height, period, and direction for metocean monitoring
Electrically driven subsea dredge for sand, gravel, clay, or rock excavation
Airlift dredge system for deep subsea excavation and debris clearance
Cut subsea structures and pipelines during decommissioning
Remove marine biofouling from subsea infrastructure
Detect leaks in subsea pipelines and infrastructure
Measure airborne particulates and ambient air quality for environmental compliance
Detect and measure gas concentrations for emissions surveys
Measure noise levels and vibration exposure for environmental and safety compliance
Service and calibration for environmental monitoring instruments from Inficon, RAE Systems, Testo, and TSI
Remote underwater inspection from operations centers in UK and Canada
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