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Shaping Access
to the Oceans

Since 1992, 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. We plan it, mobilise for it, and deliver it.

What sets us apart: Three 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
Dominique Thirel, CEO of Seanergy
A word from our CEO

After all these years of projects, of engineering and adaptation, of successes and resilience I can say today that there are few scenarios we haven’t taken on over the course of our history. Port and river works, dams, open sea, concrete or steel, whether it floats or sinks, we have faced it and overcome it so that today, our experience becomes the key to the success of your projects.

Quality and Safety, above all. That has been our guiding principle through all these years.

Dominique THIREL
CEO · Seanergy
100%
of projects performed in demanding environments
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.

Seanergy team, the people behind our marine operations
Those who work behind the scenes for you
Fernando FENOMANANA · Cyril LALLEMAND · Venance RALAINDRIRANA · Berthino RAZAFINTSALAMA · Dominique THIREL · Jean Hélias TSARAFIDISON · Thirio FLEMOND · Tsiry Zafimamy RALAIMAHEFA · Marine SOSO · Miarintsoa Jhon RABEANTOANDRO · Hobinirina ANDRIANANTENAINA · Kasy Emilia Juvette Gracia TONGALAZA · Jocelyne RASOARILALAO
Team Portraits
Jean Hélias, Country Manager, Madagascar
Jean Hélias TSARAFIDISON Country Manager · Madagascar
Gracia, Administrative Manager, Madagascar
Gracia KASY TONGALAZA Administrative Manager · Madagascar
Cyril, Dive Supervisor, Madagascar
Cyril LALLEMAND Dive Supervisor · Madagascar
Sara BACAR, Country Manager, Mozambique
Sara BACAR Country Manager · Mozambique
Jeronimo FONSECA, Dive Supervisor, Mozambique
Jeronimo FONSECA Dive Supervisor · Mozambique

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. Above all, your satisfaction and encouragement are what keep us moving forward.

Built for Real Conditions

Seanergy operates across any 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
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 partnership 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

2500+ projects across the Indian Ocean

Seanergy operates from five regional offices, with more than 2500 projects completed since 1992 across civil engineering, energy, ports, dams and water & sanitation.

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