Seanergy
- Company typePrivate
- Founded2007
- HeadquartersLe Port, France
- Headcount1–10
- GTM typeB2B
- OfferingServices
What Seanergy does
Seanergy OI is a French-registered marine and underwater works company headquartered in Le Port, Reunion Island (a French overseas department in the Indian Ocean), founded in 2007 by Dominique Thirel, who serves as Founder, CEO, and Commercial Diver. The company provides specialized underwater services including civil engineering (cutting, welding, wreck removal, drilling, underwater concrete pouring, hydraulic refusal jetting, blasting, and embankment support), maritime infrastructure works (pipeline laying, aids to navigation, dredging-pumping, port structure installation, and offshore dismantling), underwater structure inspection, oceanographic measurements (multi-beam and mono-beam bathymetry, side-scan sonar, geotechnical surveys, ADCP and instrumented buoys), and confined-environment industrial maintenance (sewer inspection, drinking water basin work, treatment plant interventions). It also operates an in-house vocational training centre for commercial diver certification. Customers span civil engineering, energy, ports, dams, water/sanitation, and special works sectors across the Indian Ocean region.
The technical stack is built around a capital-intensive fleet: ROVs rated to 300 msw, a Seabat 8125 multi-beam echo sounder deployable on ROVs to 1500m, USBL sub-meter diver positioning systems, photogrammetry/3D reconstruction rigs, hyperbaric recompression chambers (4-6 person capacity), a propelled jack-up barge, a SEAWORK vessel, and diving support plus crew transfer vessels. The company is qualified to ISO 9001, OHSAS 18001, and ISO 14001 standards under an integrated QHSE policy, and holds Bureau Veritas approval for in-water surveys, QUALIANOR Hyperbare certification, IDSA accreditation, and PORALU Marine certification — a credential stack that gates participation in regulated inspection work for port authorities and large owners.
Seanergy's commercial model is direct enterprise sales on a project-quoted basis, with turnkey delivery from site assessment through engineering and execution. It has completed 600+ projects since 2007 and operates permanent offices with locally-embedded area managers in Le Port (Reunion, headquarters), Tamatave (Madagascar), Port Louis (Mauritius), Cape Town (South Africa), and Maputo/Pemb
Seanergy firmographics
Firmographics- Name
- Seanergy
- Legal name
- SEANERGY OI
- Website
- https://seanergy-oi.com
- Company type
- Private
- Founded year
- 2007
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Ownership category
- akta.pro rank
Seanergy industry classification
Industry- Product category
- Marine and Underwater Works Services
- NAICS
- Support Activities for Water Transportation (4883)
- SIC
- Ship & Boat Building & Repairing (3730)
- akta.pro primary industry
- Underwater Inspection, Maintenance & Repair (UWILD, Diving/ROV, In-water Cleaning) (IMAJAFAJ)
- akta.pro secondary industries
- Underwater Salvage & Diving Operations (UWILD, Cutting, Welding) (IMAJANAD), Subsea & Nearshore Civil Works (Trenching, Rock Placement, Mattressing) (IMAFAJAI), Navigation & Aids-to-Navigation Works (Beacons, Buoys, Markers) (IMAFAJAH), Marine & Offshore Energy O&M (Offshore Wind, Platforms, Subsea Assets) (EUAEAGAO)
Keywords
Where Seanergy is headquartered
LocationHeadquarters
- HQ city
- Le Port
- HQ country
- France
- HQ region
- Europe
Offices5 records
Markets served
Seanergy business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Infrastructure, Technology or R&D, Marketing or Sales
Distribution channels1 record
Marketing channels4 records
Seanergy product offering
Product offeringCore offering
Seanergy OI delivers specialized marine and underwater works for enterprise clients across the Indian Ocean, including professional diving, underwater civil engineering (cutting, welding, wreck removal, concrete), maritime infrastructure (pipeline laying, dredging, port structures), in-water inspections with Bureau Veritas approval, and oceanographic measurements. Operations are supported by an integrated equipment fleet (ROVs, vessels, hyperbaric chambers) and regional offices in five countries.
Product overview
Seanergy OI is a marine and underwater works company providing specialized services across the Indian Ocean region. The company operates a multi-service portfolio centered on underwater civil engineering (cutting, welding, wreck removal, drilling, underwater concrete), maritime infrastructure (pipeline laying, dredging, port structures), underwater inspections, oceanographic measurements, and confined environment interventions. Equipment and logistics services including ROV operations, vessels, and recompression chambers support these core activities. The company also operates a vocational training centre for professional diver certification.
Differentiator
Problem solved
Functional benefit
Products and services
- Underwater Works - Civil Engineering
Quantifiable outcome
- 600+ projects completed successfully since 2007
- +2 more outcomes
Companies that use Seanergy
Customer profileNamed customers11 records
Segments6 records
Ideal customer profiles4 records
Seanergy technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature5 records
Seanergy partnerships and signals
Strategic signalPartnerships
Five partnerships are on record, tiered core and minor.
- Bureau VeritascoreBureau Veritas approved for In-water Survey inspections, providing certified underwater structure inspections with official certification and compliance verification
- Tideland Indian OceancoreSeanergy represents Tideland Indian Ocean for supply and installation of aids to navigation, serving as the regional distribution partner for marine navigation equipment
- QUALIANOR HyperbarecoreQUALIANOR Hyperbare certification for hyperbaric/diving operations, demonstrating compliance with professional standards for underwater work
- IDSA (International Diving Schools Association)coreIDSA certification for professional diver training and standards, ensuring international compliance for diving operations
- ECOPLAGEminorOfficial partner providing sustainable beach erosion solutions that combine coastal protection, wave energy production, and seawater desalination
Scale indicators2 records
Recent moves4 records
Expansion highlights5 records
Seanergy competitors and assessment
Company assessmentBroad incumbents
- DeepOcean: Subsea services provider covering IMR, survey, and subsea construction for offshore energy and utilities. Comparable to Seanergy in survey/ROV inspection and subsea intervention, but operates globally and at much larger scale.
- Stolt-Nielsen Offshore: Operator of subsea construction and offshore service vessels globally. Overlaps with Seanergy in subsea inspection and intervention support but is a publicly listed incumbent with materially larger fleet and capital base.
- Helix Energy Solutions: US-based offshore energy services company with a well-intervention and subsea robotics business. Comparable to Seanergy in subsea robotics and intervention services but with global offshore energy focus and a much larger asset base.
- Subsea 7: Global subsea engineering, construction, and services company. Overlaps with Seanergy on subsea inspection, construction support, and ROV operations, but operates at vastly larger scale and project scope.
- Bourbon SA: French offshore marine services provider offering vessel operations and subsea support across a much broader global footprint. Overlaps with Seanergy on marine services to offshore/port clients but at significantly larger scale.
- DOF Subsea: Norwegian subsea services provider offering IMR, survey, and subsea construction. Comparable to Seanergy on inspection and subsea operations but with a global offshore energy focus and considerably larger scale.
Direct peers
- Rever Offshore: UK-based subsea services contractor focused on inspection, maintenance, and repair (IMR) using ROVs and divers. Directly comparable to Seanergy on subsea IMR service model and customer base (energy and offshore).
- Comex: French-headquartered underwater engineering and commercial diving specialist, closely comparable to Seanergy in heritage and core service mix (subsea interventions, inspection, hyperbaric work). Both serve enterprise clients with diving-led delivery.
Regional players
- Mermaid Maritime: Southeast Asia-focused subsea and offshore services company serving oil & gas and regional infrastructure. Comparable to Seanergy in service mix and emerging-market geographic focus, though operating in a different region.
Emerging players
- ROVCO: UK-based subsea inspection and survey specialist using ROVs and AI-based 3D reconstruction. Closely comparable to Seanergy's ROV-based inspection and 3D photogrammetry service, though focused on offshore wind.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights6 records
Customer concentration
Seanergy social profiles
Digital presenceSeanergy compliance and trust
Trust signalCompliance9 records
Seanergy financial estimates
Financial estimateRevenue estimate
Valuation estimate
Seanergy leadership team
Management profileNumber of profiles
Profiles1 record
Seanergy funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Seanergy M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Seanergy
What does Seanergy do?
Seanergy OI delivers specialized marine and underwater works for enterprise clients across the Indian Ocean, including professional diving, underwater civil engineering (cutting, welding, wreck removal, concrete), maritime infrastructure (pipeline laying, dredging, port structures), in-water inspections with Bureau Veritas approval, and oceanographic measurements. Operations are supported by an integrated equipment fleet (ROVs, vessels, hyperbaric chambers) and regional offices in five countries.
Is Seanergy a public or private company?
Seanergy is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Seanergy founded?
Seanergy was founded in 2007. It employs 1 to 10 people.
Where is Seanergy based?
Seanergy is headquartered in Le Port, France, in the Europe region.
Who are Seanergy's main competitors?
Broad incumbents on record are DeepOcean, Stolt-Nielsen Offshore, Helix Energy Solutions, Subsea 7, Bourbon SA and DOF Subsea. Direct peers are Rever Offshore and Comex. Mermaid Maritime is listed as a regional player. ROVCO is listed as an emerging player.
Does Seanergy have an API?
No public API is recorded for Seanergy.
What industry is Seanergy in?
Seanergy's product category is Marine and Underwater Works Services. Its primary akta.pro industry code is IMAJAFAJ, Underwater Inspection, Maintenance & Repair (UWILD, Diving/ROV, In-water Cleaning), with a secondary code of IMAJANAD, Underwater Salvage & Diving Operations (UWILD, Cutting, Welding). Its NAICS code is 4883 and its SIC code is 3730.