onex neorion shipyards

What onex neorion shipyards does

ONEX Shipyards & Technologies Group, commercially referenced as ONEX Neorion Shipyards, is a privately-held Greek industrial group founded in 2004 by Panos T. Xenokostas. The group manages two historic shipyards — the Syros Shipyard (established 1861, assumed under ONEX management in 2018) and the Elefsina Shipyard (established 1962, assumed under management in 2022) — delivering integrated shipbuilding, ship repair, naval and defense construction, green retrofits, port-logistics infrastructure, and technology systems. The group employs a 3,000+ workforce directly and indirectly, owns and manages €1.5B in assets, has executed €3B in delivered projects since 2019, and holds ISO certifications across quality (9001), environmental (14001), occupational health (45001), energy management (50001), and information security (27001).

The product portfolio is anchored by the RAstar 2800 escort/terminal tugboat series co-developed with naval architecture firm Robert Allan Ltd., a fleet maintenance and MRO services line that includes scrubber and carbon capture installation, naval construction covering modern manned and unmanned surface and underwater units, and transportation/critical infrastructure systems including rolling stock via ONEX RSIS. The Elefsina facility is structured as a vertically integrated shipbuilding-repair-defense-logistics hub with intermodal rail and highway connectivity through the Elefsis-Thriasio corridor; Syros is being repositioned as a strategic ship repair and industrial hub. The technology stack combines heavy industrial fabrication with digital systems integration, ICT/security solutions, and maritime decarbonization technology for IMO Tier III and emissions compliance.

Revenue is generated across six streams through a B2B enterprise sales motion: newbuilding/shipbuilding (one-time project licensing), ship repair and maintenance (per-project service contracts), defense and naval programs (long-cycle government contracts), green technology retrofits (project-based installation), technology systems and digital solutions (professional services), and transportation/infrastructure (project delivery). ONEX targets Greek and international shipowners, defense customers, government entities, and maritime operators, with selective participation in international public tenders (e.g., the Algeria ENTMV fleet maintenance award). Distribution combines direct enterprise sales with strategic technology and industry partnerships — including Hanwha Ocean, Hanwha Power Systems, AKTOR, Robert Allan Ltd., Attica Group, and Port of Antwerp-Bruges — and active presence at major industry events such as Posidonia 2026, Delphi Economic Forum, and Naftemporiki Shipping Conference.

Name

onex neorion shipyards

Legal name

ONEX Shipyards & Technologies Group

Website

https://onexsyrosshipyards.com

Company type

Private

Founded year

2004

Operating status

Operating

Headcount range

11–50 employees

Short description

ONEX Shipyards & Technologies Group (ONEX Neorion Shipyards) is a privately-held Greek industrial group managing the historic Syros and Elefsina shipyards, providing shipbuilding, repair, naval/defense construction, green retrofits, port-logistics, and technology systems to shipowners, defense customers, and government clients in the Eastern Mediterranean and beyond.

Ownership category

akta.pro rank

Product category

Shipbuilding & Ship Repair

NAICS

Ship Building and Repairing (336611)

SIC

Ship & Boat Building & Repairing (3730)

akta.pro primary industry

Surface Combatants (Destroyers, Frigates, Corvettes) (IMAJABAA)

akta.pro secondary industries

Naval & Government Vessel Maintenance & Modernization (TLAKAKAB), Hull, Structure & Steelwork Repair (TLAKAKAE), Mechanical Systems Repair (Engines, Propulsion, Pumps) (TLAKAKAF), Auxiliary & Logistics Naval Vessels (Replenishment, Support, Hospital) (IMAJABAD)

Keywords

• Shipbuilding services
• Ship repair
• Naval defense programs
• Maritime decarbonization
• Port logistics

Headquarters

HQ city

Ermoúpoli

HQ country

Greece

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Shipbuilding & Newbuilding: Design and construction of new commercial vessels including tugboats, tankers, and specialized maritime vessels with collaboration from international naval architecture partners
2. Ship Repair & Maintenance: Scheduled and unscheduled vessel maintenance, repair and overhaul services, systems maintenance, engineering analyses and modifications. Over 900 successful repairs completed since 2019
3. Defense & Naval Programs: Naval construction, fleet sustainment, modernization, integrated logistics, and fleet lifetime technical support for modern naval units
4. Green Technology Retrofits: Installation of scrubbers, carbon capture systems, and green smart retrofits for vessel environmental compliance and decarbonization
5. Technology Systems & Digital Solutions: ICT and security solutions, digital systems integration for maritime and industrial applications
6. Transportation & Infrastructure: Rolling stock, railway systems, metro infrastructure, smart networks, and logistics corridors development and support

Go-to-market motion3 records

Distribution channels4 records

Marketing channels6 records

Core offering

ONEX Shipyards & Technologies Group operates the historic Syros and Elefsina shipyards in Greece to design, build, repair and modernize commercial vessels, naval units, tugboats and specialized maritime craft. The group also delivers defense and naval programs (including unmanned surface and underwater units), green retrofit and decarbonization services (scrubbers, carbon capture), and integrated port-logistics-critical infrastructure solutions. Operations are supported by a digital/ICT backbone and a 3,000+ workforce across Greece.

Product overview

ONEX Shipyards & Technologies Group operates as an integrated industrial ecosystem offering multiple interconnected services rather than a single unified product. The portfolio centers on shipbuilding and ship repair through revived Elefsina and Syros shipyards, supplemented by defense and naval programs (constructing manned and unmanned surface/underwater naval units), technology systems providing the digital backbone, energy and green solutions (including scrubbers, carbon capture, and green retrofits), ports and logistics infrastructure, and transportation/critical infrastructure services. Key product offerings include the RAstar 2800 Tugboat series developed with Robert Allan Ltd., fleet maintenance and support services, and comprehensive shipbuilding capabilities. The Group manages €1.5B in assets, has a €2B+ global investment plan, employs 3,000+ workers, and has completed €3B in delivered projects since 2019.

Differentiator

Problem solved

Functional benefit

Products and services

• RAstar 2800 Escort/Terminal Tugboats High-performance ASD escort tugboats developed in collaboration with Robert Allan Ltd., featuring minimum 85T bollard pull, sponsoned hull-form for superior escort performance in rough sea conditions, IMO Tier III compliant, ATEX guidelines compliance for LNG/LPG environments, firefighting capability (FIFI), and oil recovery functionality. Sold to terminal operators, port authorities and escort service customers.
• Shipbuilding and Ship Repair Services Integrated shipbuilding and ship repair services delivered through the Elefsina and Syros shipyards at the Eastern Mediterranean, providing strategic industrial capacity for newbuilding, scheduled and unscheduled maintenance, systems MRO, engineering analyses and modifications. Targeted at Greek and international shipowners and fleet operators.
• Defense and Naval Programs Naval shipbuilding infrastructure and services enabling development of modern manned and unmanned surface and underwater naval units. Includes naval construction, fleet sustainment, modernization, integrated logistics, and fleet lifetime technical support for defense ministries, navies and government ship operators.
• Technology Systems and Business Solutions Digital backbone and technology solutions providing ICT, security systems, and business process optimization for industrial and maritime operations, including telecom, security systems and business solutions for industrial clients.
• Energy and Green Solutions Strategic energy and green solutions platform focused on maritime decarbonization, offshore energy infrastructure, sustainable industrial modernization, scrubber installation, carbon capture installation, and green and smart retrofits. Sold to shipowners and operators needing environmental compliance.
• Ports, Logistics and Maritime Infrastructure Integrated port and logistics platform in Elefsina combining intermodal port operations with national railroad and highway connections, logistics infrastructure, industrial services, and strategic maritime support with shipyard facilities. Delivered to port authorities, logistics operators and infrastructure developers.
• Transportation and Critical Infrastructure Railway systems, metro infrastructure, smart networks, and logistics corridors. Includes rolling stock manufacturing and lifecycle support through ONEX RSIS, with the Elefsis-Thriasio corridor connecting ship, rail, and warehouse logistics. Provided to public sector and infrastructure customers.
• Fleet Maintenance and Support Services Comprehensive maintenance and support services for maritime vessels including scheduled and unscheduled maintenance, systems MRO, engineering analyses, scrubber and carbon capture installation, green and smart retrofits, spare parts provision, and security equipment installation. Delivered under enterprise and government contracts such as the Algeria ENTMV fleet maintenance tender.

Quantifiable outcome

• 900+ successful repairs completed since 2019
• +3 more outcomes

Named customers4 records

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Six partnerships are on record, tiered flagship and core.

• Hanwha OceanflagshipStrategic or Co-development Partner · 19 March 2026Landmark agreement announced March 19, 2026 between ONEX Group and Hanwha Ocean for naval shipbuilding and maritime technology cooperation. This strategic alliance represents a major advancement in Greek naval industrial capabilities and international defense technology collaboration.
• AKTORcoreStrategic or Co-development Partner · 11 March 2026Strategic alliance announced March 11, 2026 between ONEX and AKTOR for the Elefsis Port Tender. Combined capabilities for integrated port development, logistics infrastructure, and maritime hub development in Western Attica.
• Hanwha Power SystemscoreStrategic or Co-development Partner · 25 February 2026Trilateral agreement signed February 25, 2026 at the U.S. Department of Transportation between Greek ONEX Shipyards, South Korea's Hanwha Power Systems, and the United States, focusing on shipbuilding and energy cooperation under Project 'Trident'. Represents strategic US support for Greek maritime industrial development.
• Robert Allan Ltd.coreTechnology or IntegrationInternational collaboration with Robert Allan Ltd., a globally recognized naval architecture firm and leader in tug industry with over 1,500 RA-designed tugs built worldwide. ONEX Group uses RAstar 2800 tugboat designs for shipbuilding projects with unique sponsoned hull-form and high-performance features.
• Attica GroupcoreStrategic or Co-development PartnerStrategic partnership with Attica Group focused on enhancing fleet performance, operational reliability, and long-term sustainability. Includes scheduled and unscheduled vessel maintenance, advanced environmental upgrade programs, newbuilding opportunities, and development of synergies across logistics and maritime services.
• Port of Antwerp-BrugescoreStrategic or Co-development PartnerCollaboration announced at Posidonia 2026 for anti-pollution vessel construction and maritime solutions. Represents international partnership with one of Europe's largest ports for sustainable maritime technology development.

Scale indicators8 records

Recent moves8 records

Expansion highlights6 records

Direct peers

• Naval Group: French naval defense company building surface combatants, submarines, and unmanned maritime systems. Directly comparable to ONEX's naval programs segment, with both pursuing modern manned and unmanned surface and underwater naval units for European and allied navies.
• Chantiers de l'Atlantique: French major shipyard building cruise ships, naval vessels, and complex maritime platforms. Comparable to ONEX as a European shipyard with naval construction and large-vessel commercial newbuilding capabilities.
• Navantia: Spanish state-owned shipbuilder and one of Europe's top naval surface combatant builders, also active in ship repair and offshore energy. Comparable to ONEX as a European naval shipbuilder pursuing fleet modernization programs for NATO and allied navies.
• Damen Shipyards Group: Dutch global shipbuilding group with deep portfolio in tugs, workboats, naval vessels, and ship repair. Directly comparable to ONEX given shared focus on tugboat construction, ship repair, and naval support across European and international markets.
• Fincantieri: Italy's largest shipbuilder with a leading global position in naval vessels (frigates, corvettes, patrol boats) and commercial cruise/mega-yacht construction. Directly comparable to ONEX as a Mediterranean naval and commercial shipbuilder competing for similar European naval tenders and fleet sustainment programs.

Regional players

• Sedef Gemi İnşaatı: Turkish shipyard located in Tuzla, Istanbul, active in shipbuilding, ship repair, and naval construction. Comparable to ONEX as a regional Mediterranean shipbuilder competing for similar commercial and naval contracts across the Eastern Mediterranean basin.
• Cammell Laird: UK shipbuilder and ship repairer based in Birkenhead with naval and commercial capabilities, including complex vessel refits. Comparable to ONEX's ship repair and naval sustainment activities, though operating primarily in UK and Northern European waters rather than the Eastern Mediterranean.

Broad incumbents

• Hyundai Heavy Industries: World's largest shipbuilder with diversified naval, commercial, and offshore capabilities. Comparable to ONEX at scale in commercial shipbuilding and naval construction, and a potential competitor for the same European naval modernization programs.
• Samsung Heavy Industries: South Korean shipbuilder specializing in LNG carriers, tankers, drillships, and naval platforms. Comparable to ONEX's commercial and naval newbuilding activities at significantly larger scale.
• Hanwha Ocean: South Korean global shipbuilder (formerly Daewoo Shipbuilding & Marine Engineering) with major naval and commercial capabilities. Functions as both an ONEX partner and a broader incumbent competitor for large naval and commercial newbuild contracts worldwide.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/user/ONEXGroupofCompanies
• Facebookfacebook.com/ONEXgroupofcompanies
• LinkedInlinkedin.com/company/onex-syros-shipyards-sa
• Instagraminstagram.com/onexsyrosshipyards
• Xx.com/onexshipyards

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 onex neorion shipyards