What TSC Subsea does

TSC Subsea is a private UK-headquartered provider of remotely deployed subsea non-destructive testing (NDT) inspection services and proprietary robotic systems, operating as a product brand within the NDT Global corporate group (owned by Eddyfi/NDT and backed by Novacap, CDPQ, National Bank of Canada, and Investissement Quebec). The company targets enterprise customers in oil and gas, offshore wind, maritime/shipping, and flow assurance, including supermajor operators such as Shell, bp, Equinor, Repsol, and Ørsted, delivering integrity assessments of subsea pipelines, flexible risers, offshore structures, FPSOs, and vessels in water depths from splash zone to ultra-deepwater. The platform combines five proprietary NDT modalities — ACFM (Alternating Current Field Measurement) for surface-breaking crack detection, ART (Acoustic Resonance Technology) for through-coating wall thickness measurement, SPA (Subsea Phased Array) for volumetric corrosion and weld inspection, SPECTA (Pulsed Eddy Current) for heavily corroded surfaces, and ToFD for sub-millimeter defect sizing — with a fleet of purpose-built robotic scanners (ARTEMIS, ORCA, MagCrawler, NodeScanner, TRITON, vCompact, and specialised sub-scanners). The company monetizes primarily through professional services inspection contracts delivered via ROVs and divers, supplemented by technology licensing and bespoke custom robotic development for unique inspection challenges. Multi-year program contracts (e.g., 2026-2029 Brazil flexible-pipe engagement), DNV-approved service supplier status, and Lloyd's Register validation for ART hull thickness measurement underpin procurement access with major operators and classification societies, while offices in the UK, Norway, Brazil, US, and Australia support regional execution.

Name

TSC Subsea

Legal name

TSC Subsea Limited

Website

https://tscsubsea.com

Company type

Private

Founded year

2015

Operating status

Operating

Headcount range

11–50 employees

Short description

TSC Subsea provides remotely deployed subsea non-destructive testing inspection services and proprietary robotic systems — including ACFM, ART, and Subsea Phased Array technologies — for oil and gas, offshore wind, and maritime operators globally.

Ownership category

akta.pro rank

Product category

Subsea Non-Destructive Testing Inspection Services

NAICS

Testing Laboratories and Services (541380), Navigational, Measuring, Electromedical, and Control Instruments Manufacturing (33451), Electronic and Precision Equipment Repair and Maintenance (811210)

SIC

Services-Testing Laboratories (8734), Industrial Instruments For Measurement, Display, And Control (3823)

akta.pro primary industry

Non-Destructive Testing (NDT) & Advanced Inspection (Phased Array, TOFD, Guided Wave) (EUAEAKAF)

akta.pro secondary industries

Marine Surveys, Testing & NDT (Thickness Gauging, UT/MPI, Pressure Testing, Commissioning) (TLAHAMAK), Non-Destructive Testing (NDT) & Inspection Services (IMAIACAI), Corrosion Inspection & Coating/CP Surveys (CUI, CP, DCVG/ACVG) (EUAEAHAF), NDT/Inspection & Testing Services (Aviation) (IMABALAJ)

Keywords

• Subsea inspection services
• Non-destructive testing NDT
• Robotic pipeline inspection
• Subsea weld inspection
• Offshore asset integrity

Headquarters

HQ city

Houston

HQ country

United States

HQ region

North America

Offices6 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Technology or R&D, Operations, Infrastructure, Marketing or Sales, Supply Chain

Revenue model

1. Subsea Inspection Services: Inspection services for subsea pipelines, risers, structures, vessels, and FPSOs using proprietary NDT technologies. Services delivered via ROVs, divers, or robotic crawlers. Contracts include multi-year inspection programs (e.g., 2026-2029 Brazil flexible pipes contract).
2. Technology Licensing and Equipment: Deployment of proprietary inspection technologies and robotic systems. Customers gain access to patented ACFM, ART, SPA, and other NDT technologies through service contracts.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

TSC Subsea delivers subsea non-destructive testing (NDT) inspection services and proprietary robotic inspection systems for offshore oil & gas, offshore wind, and maritime customers. The company deploys a portfolio of NDT technologies (ACFM, ART, SPA, SPECTA, ToFD) integrated with custom-built robotic scanners (ARTEMIS, ORCA, NodeScanner, TRITON, MagCrawler, vCompact) operated via ROVs or divers to assess pipelines, risers, FPSOs, vessels, and offshore structures.

Product overview

TSC Subsea provides a comprehensive portfolio of subsea non-destructive testing (NDT) inspection services and proprietary robotic inspection systems. The offering consists of five core robotic platforms (ARTEMIS for large pipeline/riser scanning, ORCA for hull inspection, MagCrawler for magnetic weld inspection, NodeScanner for nodal weld inspection, and TRITON for internal pipeline inspection) supported by specialized sub-scanners (vCompact, LinearScanner, vCaliper, vPush, ART GUIDE, ExtradosScanner, DexScanner, VISTA) and five proprietary NDT technologies (ACFM for crack detection, ART for wall thickness measurement through coatings, SPA for phased array ultrasonic inspection, SPECTA for pulsed eddy current testing, and ToFD for volumetric weld inspection). The company also offers custom-designed robotic solutions for unique inspection requirements. Services are deployed via ROVs or divers to assess subsea pipelines, flexible risers, offshore structures, vessels, and FPSOs across oil & gas, offshore wind, and maritime industries.

Differentiator

Problem solved

Functional benefit

Products and services

• ARTEMIS ROV-deployed automated scanner utilizing Acoustic Resonance Technology (ART) for 360-degree scanning through pipeline and riser coatings, designed for wall thickness measurement and corrosion mapping of subsea assets including unpiggable pipelines and flexible risers.
• ORCA Deck-launched, diverless robotic crawler for in-service hull inspections above and below the waterline. Powered by ART technology, delivers wall thickness measurements with ±0.22 mm accuracy through coatings without dry-docking.
• MagCrawler ROV-deployed magnetic crawler for subsea weld inspection with array probe capability for efficient weld scanning and rotating head for complete weld and heat-affected zone coverage.
• NodeScanner ROV-deployed robotic inspection system for complex nodal weld connections on subsea jacket structures, pipe-to-pipe and cone-to-pipe welds. Built on ACFM expertise with added PAUT and ToFD capabilities for full volumetric inspection coverage.
• vCompact Compact, motorised ROV-deployable ultrasonic scanner with full 360-degree circumferential drive. Paired with high-powered phased array system for corrosion mapping and ToFD for weld integrity assessment. Accommodates diameters from 89mm to 3,000mm.
• TRITON Tethered ILI Pipeline Crawler Bi-directional tethered in-line (ILI) pipeline crawler for internal inspection of unpiggable or non-piggable pipelines. Features triple independently powered tracks, delivers multiple NDT techniques up to 300m distance in submersed conditions up to 150m depth.
• LinearScanner Motorised ROV-deployable system specifically designed for inspecting ferrous and non-ferrous subsea pipe bends. Incorporates internal encoder for precise distance measurement and magnetic attachment for ferrous pipes.
• vCaliper Customised tool designed specifically for ovality and wall thickness inspection in constricted locations. Used for tight access field joint inspection.
• ART GUIDE Acoustic Resonance Technology Grout Underwater Inspection Delivery system. Detects and confirms presence of grouting while identifying voids, crushing, cracks, and dis-bonding behind pile sleeves from the external surface.
• vPush ART scanner on a moving platform pushed by ROV for rapid pipeline content assessment. Specifically designed for hydrate plug detection and flow assurance applications through coating inspection.
• ExtradosScanner Custom designed scanner for inspection of subsea gas lift risers and small diameter pipe bends.
• DexScanner Subsea weld inspection scanner for complex weld geometries and inspection requirements.
• VISTA Underwater diver-deployed NDT scanner for inspections requiring manual deployment.
• Custom Subsea Inspection Robotics Custom-designed robotic inspection solutions developed to meet specific client requirements for unique subsea inspection challenges.
• ACFM (Alternating Current Field Measurement) Electromagnetic NDT inspection method for detecting and sizing surface-breaking cracks in welds. Recognised and approved by DNV, ABS, and Lloyd's Register. Features no on-site calibration requirement and uniform field inducer.
• ART (Acoustic Resonance Technology) Proprietary ultrasound-based technique for high-precision quantitative wall thickness measurements. Tolerates coatings, surface deposits, and marine growth without liquid couplant requirement. Used for through-coating inspection.
• SPA (Subsea Phased Array) Subsea Phased Array Ultrasonic Testing for high-resolution corrosion mapping and volumetric weld inspection. Incorporates Total Focusing Method (TFM) technology for subsea deployment via ROV.
• SPECTA (Subsea Pulsed Eddy Current Testing Array) Pulsed Eddy Current Testing Array for inspecting highly corroded and scab surfaces through thick protective coatings including concrete weight coat.
• ToFD (Time-of-Flight Diffraction) Subsea Time-of-Flight Diffraction technique for volumetric weld inspection. Uses ultrasonic probes to detect and size planar defects by measuring diffraction from defect tips.
• Subsea Pipeline Inspection Services Inspection services for subsea pipelines, risers, structures, vessels, and FPSOs using proprietary NDT technologies, delivered via ROVs, divers, or robotic crawlers. Contracts include multi-year inspection programs.
• Flexible Riser Inspection Services Inspection of flexible risers using ARTEMIS robotic inspection system with ART technology, enabling assessment of flexible pipe integrity including detection of unwanted media within the annulus region.
• In-Service Hull Inspection Services In-service hull inspection services using ORCA deck-launched robotic crawler, providing wall thickness measurements through coatings without dry-docking for naval, commercial shipping, and offshore production assets.

Quantifiable outcome

• Detection probability >95% for defects ≥1mm
• +4 more outcomes

Named customers10 records

Segments4 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature14 records

Partnerships

Six partnerships are on record, tiered core and minor.

• SubseaRobotixcoreStrategic or Co-development Partner · 1 August 2023Strategic partnership to deliver combined subsea inspection expertise to Nigeria's subsea market. SubseaRobotix provides subsea deployment capabilities with 300+ successful deployments worldwide. TSC Subsea provides advanced NDT technologies including ACFM, ART, and robotic inspection systems. Focus on pipelines, flexible risers, and offshore structures in Nigeria and West Africa.
• DeepOceancoreImplementation/ SI/ Consulting PartnerProject partnership for subsea inspection campaigns. DeepOcean acts as ROV operator for TSC Subsea's inspection technologies. Notable project: Yme field pipe bend inspection using LineScanner with SPA technology for Repsol Norge AS.
• bpcoreStrategic or Co-development PartnerCollaborative development of TRITON tethered ILI solution for inspecting bp's unpiggable 365mm duplex riser in North Sea. Joint engineering effort to design custom robotic crawler capable of navigating 110m pipe with multiple bends and conducting 360-degree internal inspection.
• Seawide ServicesminorChannel Partner/ Reseller/ DistributorDiver deployment partnership for underwater ACFM inspections. Seawide Services divers deploy TSC Subsea's ACFM technology for propeller and hull inspections. Example: Archon Gabriel Bulk Carrier propeller inspection in Gulf of Finland.
• Lloyd's RegistercoreStrategic or Co-development PartnerTechnology validation partnership for ART Acoustic Resonance Technology. Lloyd's Register validated ART for quantitative Ultrasonic Thickness Measurement (UTM) for ship hull carbon steel plate through coating. Supports ORCA hull inspection system credibility for maritime classification.
• NDT GlobalcoreOthersTSC Subsea is a product brand within NDT Global company. NDT Global is the leading provider of inline diagnostic solutions, advanced data insights, and integrity management services for energy-sector infrastructure. NDT Global acquired Halfwave (owner of ART technology) in 2020 and merged Halfwave Subsea with TSC Subsea.

Scale indicators5 records

Recent moves9 records

Expansion highlights6 records

Broad incumbents

• Eddyfi Technologies: Eddyfi is the parent group that owns both NDT Global and TSC Subsea, and is the leading advanced NDT equipment manufacturer serving industrial inspection markets globally. It provides the broader technology ecosystem and instrument portfolio that complements TSC Subsea's specialized subsea service delivery.
• Intertek: Intertek is a global testing, inspection, and certification (TIC) leader serving oil & gas, maritime, and offshore wind with asset integrity services. While not subsea-NDT specialized, they compete for major operator integrity budgets that TSC Subsea also targets.
• Rosen Group (Rosen Inspection): Rosen is a global leader in pipeline integrity inspection services, including inline inspection tools and integrity management solutions. They serve the same oil & gas operator customers as TSC Subsea with overlapping pipeline integrity capabilities.

Emerging players

• DeepOcean: DeepOcean is an integrated subsea services provider offering ROV operations, inspection, and survey for offshore oil & gas and renewables. They actively partner with TSC Subsea as an ROV operator and compete as a one-stop inspection provider for the same North Sea and Norwegian clients.
• NDT Global: NDT Global is the sister entity (parent company) of TSC Subsea and the leading provider of inline diagnostic (ILI) solutions for energy pipelines. It is a sister not competitor, but uses overlapping NDT technologies (acoustic, ultrasonic, eddy current) for pipeline integrity on similar end customers.

Direct peers

• Mistras Group: Mistras is a major provider of NDT services, including ultrasonic, eddy current, and acoustic testing for energy infrastructure, pipelines, and industrial assets. Their service portfolio overlaps directly with TSC Subsea's NDT capabilities, especially in pipeline integrity and corrosion inspection.
• Fugro: Fugro offers subsea inspection, surveying, and asset integrity services for offshore energy infrastructure using ROV-based technologies. They serve the same oil & gas, offshore wind, and maritime clients with geophysical and inspection capabilities overlapping TSC Subsea's subsea NDT scope.
• Tracerco (part of Johnson Matthey): Tracerco provides non-destructive testing, subsea inspection, and reservoir diagnostics for upstream oil & gas operators worldwide. Their pipeline inspection and integrity services use comparable NDT methods (radiation-based, ultrasonic) and serve the same operator customer base as TSC Subsea.
• Oceaneering International: Oceaneering is one of the largest subsea services and ROV operators globally, providing underwater inspection, intervention, and integrity services to oil & gas, offshore wind, and maritime customers — directly comparable to TSC Subsea's ROV-deployed NDT offering across overlapping geographies.

Regional players

• Ashtead Technology: Ashtead Technology rents and operates subsea inspection equipment (including NDT tools and ROVs) and provides offshore survey services. They serve oil & gas and offshore wind customers in the North Sea and other offshore basins with adjacent inspection technologies and deployment models.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UCH5t5glOBQUykeY-nZvyztA
• LinkedInlinkedin.com/company/tsc-subsea

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about TSC Subsea