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Shaping Access
to the Oceans

Since 2007, Seanergy has been operating on the most demanding marine and subsea projects across the Indian Ocean and Africa. Safety, reliability, full control: our commitment on every single project.

Who We Are

A marine and subsea
specialist, built on trust

Seanergy is the reference expert for marine and subsea works across the Indian Ocean and Africa. Professional diving, underwater works, confined environment operations. Our teams plan it, mobilise for it, and deliver it.

What sets us apart: nearly two decades of on-the-ground expertise, a deep knowledge of the environments we operate in, and a regional presence that makes all the difference.

“Shaping access to the oceans. Opening the road to maritime excellence.”

— Our Mission
600+
Projects Delivered
19 years
of Expertise
Our Team

The people behind
the operations

Divers, engineers, dive supervisors, safety officers: our people are our standard.

At Seanergy, theory and fieldwork are one and the same. Our founder spent 15 years as a commercial diver before building the company, and that DNA runs through every level of the organisation. From planning to execution, every team member brings the same rigour to every project.

Team Portraits
Dominique Thirel
Dominique Thirel Founder & Managing Director
Offshore Supervisor
Offshore Supervisor Deck operations & mobilization
Commercial Diver
Commercial Diver Underwater inspection & intervention
Dive Supervisor
Dive Supervisor Team lead, offshore projects
Systems Technician
Systems Technician Hyperbaric controls & LARS
Subsea Technician
Subsea Technician Cables, NDT & underwater works

What Drives Us on Every Project

Excellence and challenge are what drive our teams. Every project is an opportunity to push further and deliver the best work we know how to do.

Built for Real Conditions

Seanergy operates across every environment and our teams are trained for all of them. Certified, prepared, and ready to mobilise. Safety first, always.

Global Presence

From the Indian Ocean,
reaching out to the world

From our Indian Ocean base, we operate wherever marine works demand it, with established teams across Africa and specialist deployments on call, worldwide.

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Live Operations Network
Regional office
Our Journey

Twenty years of
maritime history

From Madagascar to the rest of the world. Discover our story.

01/10
2007
Founding

Seanergy OI is founded in Madagascar

After 15 years as a commercial diver, Dominique Thirel creates Seanergy OI in Madagascar, laying the foundation for the company's future expansion across the Indian Ocean.

2009
Expansion

Main office opens in Reunion Island

Seanergy opens its headquarters in Reunion Island. The slowdown of the Malagasy economy later makes Reunion the hub of the company's development.

2012
Certification

ISO 9001 & OHSAS 18001 awarded

Bureau Veritas recognizes Seanergy's quality management and health & safety systems, providing a formal validation of our operational standards.

2014
Expansion

Branch opens in Port Louis, Mauritius

Seanergy continues its Indian Ocean expansion by opening a subsidiary in Port Louis to serve the growing maritime and port infrastructure markets.

2015
Expansion

Subsidiary in Maputo, Mozambique

Seanergy opens a subsidiary in Maputo to make its know-how available in the port area, serving raw material extraction and export sectors.

2015
Expansion

New office in Tanzania

Seanergy extends its reach further into East Africa, consolidating its position as a cross-regional marine operator.

2015
Training

5th French hyperbaric training center

Seanergy OI becomes the fifth professional training center for hyperbaric businesses in France. The first Class 1B session is delivered.

2016
Expansion

New office in Cape Town, South Africa

International expansion continues with a South African office, positioning Seanergy to serve the Southern African maritime and offshore sector.

2017
Certification

AFNOR renews ISO 9001 & OHSAS 18001

Certification renewals confirmed by AFNOR, validating the continuous improvement of our quality and safety management systems.

Today
Present

600+ projects across the Indian Ocean

Seanergy operates from five regional offices, with more than 600 projects completed since 2007 across civil engineering, energy, ports, dams and water & sanitation.

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Work With Us

Have a project
we can help deliver?

Subsea pipeline, port inspection, hydrographic survey, EPCM contract: our teams are ready to mobilise across the Indian Ocean and Africa.