THE GROUP

Welcome to ONEX Group

A Greek industrial group active in shipbuilding, ship repair, defense support, technology, and critical infrastructure.

BUSINESS SECTORS

Redefining the Greek industrial & maritime landscape

Through an integrated industrial ecosystem, ONEX Group combines engineering, technology, and operational expertise to support large-scale industrial development and the modernization of Greece’s maritime and industrial capabilities.

PROJECTS

Explore some of ONEX Group's most recent projects

From Shipbuilding, ship repair, desfense and naval projects to advanced industrial and infrastructure initiatives, the Group’s projects reflect a long-term vision focused on innovation, operational excellence, and the modernization of Greece’s industrial and maritime ecosystem.

NEWS & MEDIA

Stay up to date with the latest developments across ONEX Group

Explore company news, industry insights, strategic partnerships, and announcements that highlight our ongoing contribution to shipbuilding, technology, infrastructure, energy, and industrial innovation.

CAREERS

Join a leading Greek industrial and technology group

A career at ONEX Group means becoming part of a growing industrial and technology ecosystem with long-term opportunities across multiple sectors.

CONTACT

Get in touch with ONEX Group

Contact us and connect with the people shaping the future of industry, technology, and maritime innovation.

Group Overview

ONEX Shipyards & Technologies Group celebrates Greece's definitive return to the global shipbuilding map. Leveraging an impressive track record of 900 successful repairs since 2019, the Group transforms its expertise into a new era of industrial supremacy and local economic growth, supporting thousands of jobs and domestic suppliers.

The Group has a vertically integrated business model spanning shipbuilding, defense, technology, energy, and transportation infrastructure. At the core of its operations are shipbuilding and ship repair activities, including the construction of commercial and specialized vessels, vessel maintenance and conversions, and the development of next-generation ships such as advanced tugboats.

In parallel, ONEX is expanding dynamically in the defense sector through the construction and support of naval vessels, participation in international defense programs, and the development of strategic partnerships in naval defense across Europe and the Mediterranean.

The group also develops advanced technology solutions, digital platforms, and operational systems serving the energy, security, industrial, and infrastructure sectors. Its activities further extend into energy and critical infrastructure projects, including LNG and energy systems, port infrastructure, logistics, and the development of industrial facilities and energy hubs.

As part of its broader industrial strategy, ONEX has also entered the railway sector, focusing on rolling stock production and maintenance, while developing integrated industrial and logistics solutions across multiple sectors.

By combining industrial production capabilities, advanced technology, innovation, and high value-added services, ONEX delivers integrated end-to-end solutions to commercial, defense, transportation, and energy clients in Greece and internationally.

The Group has a vertically integrated business model spanning shipbuilding, defense, technology, energy, and transportation infrastructure. At the core of its operations are shipbuilding and ship repair activities, including the construction of commercial and specialized vessels, vessel maintenance and conversions, and the development of next-generation ships such as advanced tugboats.

ONEX at a glance

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Currently owning and managing assets

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investment plan globally

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dynamic workforce directly and inderictly

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successful repairs completed since 2019

€0B

euro in completed and delivered projects

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years of maritime heritage

Overview & Strategy

01

Asset Management

Currently owning and managing assets totaling €1.5 billion

02

Investment Plan

Committed to a massive €2 billion investment globally

03

The Hub

Transforming Elefsina into a world-class Port & Logistics Hub, driving growth for the local economy and the domestic supply chain

Shipbuilding & Repair Excellence

Shipbuilding & Repair Excellence
  • Proven Track Record: Over 900 successful repairs completed since 2019

  • New Constructions: Full capacity for new vessel builds of all types.

  • Tugboat Production: Launching dedicated production lines for 20 + 20 (option) tugboats

  • Ship Ownership: Strategic expansion into vessel ownership, including the iconic "Eleftherios Venizelos" and a dedicated fleet of tugs

A maritime legacy of 229 years

ONEX stands on a maritime legacy that spans 229 years and an corporate legacy of 248 yeras, rooted in Greece’s long-standing relationship with shipbuilding, seafaring, and industrial craftsmanship. This heritage is not treated as history alone, but as a living foundation that continues to shape the company’s identity, technical culture, and strategic direction today.

Built upon generations of maritime expertise, the company has inherited a deep understanding of shipyard operations, vessel construction, and complex industrial processes. Over time, this accumulated knowledge has evolved into a modern industrial capability that combines traditional craftsmanship with advanced engineering, digital systems, and large-scale industrial execution.

Throughout its development, ONEX has focused on preserving this continuity while driving transformation. The modernization of historic shipyards and the introduction of new technologies have allowed the group to bridge its maritime heritage with contemporary global industry standards. This evolution reflects a consistent commitment to operational excellence, industrial resilience, and long-term value creation.

Today, ONEX represents the convergence of historical depth and modern industrial ambition. Its 229-year maritime foundation serves not only as a reference point, but as a strategic asset shaping its role as a forward-looking industrial group in shipbuilding, energy, defense, and infrastructure.

Energy & Global Alliances

01

Energy & Global Alliances

Strong alliance with HANWHA and strategic financial backing from the U.S. International Development Finance Corporation (DFC).

02

Energy Leadership

Specialized focus on energy constructions and the shipbuilding of LNG vessels.

03

Future Vision

Building a technologically advanced energy and maritime ecosystem in the Eastern Mediterranean.

Through the modernization and operation of major Greek shipyards, the group has contributed to repositioning Greece on the international shipbuilding map

Quality & Certifications

We are committed to delivering products and services that exceed client expectations through continuous improvement, rigorous process control, and adherence to the highest international standards

Quality & Certifications

Our integrated management system is certified by leading international bodies, ensuring compliance and safety.

ISO 9001
ISO 45001
ISO 50001
ISO 27001
THE ONEX ECOSYSTEM