3. Maj
3. Maj is a historic Croatian shipyard in Rijeka that builds commercial vessels including tankers, bulk carriers and container ships.
Last updated August 31, 2026
Overview
3. Maj, officially Treći Maj Brodogradilište d.d., is a historic shipyard located in Rijeka, Croatia. Its industrial lineage reaches back to 1892, when the first docks were established as an affiliate of Howaldtswerke of Kiel. After the initial lease ended in 1902, activity was limited for a period before three Budapest businessmen restarted operations in 1905 under the Danubius name. The yard was renamed Ganz & Co. Danubius in 1911 and expanded during the 1910s. Rijeka, then known as Fiume, occupied an important position within the maritime economy of the Kingdom of Hungary. During this period, the yard became one of the major shipbuilding facilities in the Hungarian industrial system. It constructed commercial ships and naval vessels, including SMS Szent István, described in reference material as the largest ship or warship ever built by Hungary. The shipyard’s identity and political environment changed repeatedly as control of Rijeka shifted after the First World War. In 1920, following the establishment of the Free State of Fiume and the subsequent transfer of the city to Italian control, the facility was renamed Cantieri Navali Quarnero. The shipyard was heavily damaged or destroyed during the Second World War and required postwar reconstruction. In the Yugoslav period it initially operated as Kvarnersko Brodogradilište. In 1948 it adopted the name 3. Maj, meaning “3 May,” commemorating 3 May 1945, the date associated with the liberation of Rijeka from Axis occupation. The name has remained the central contemporary identity of the yard. 3. Maj’s principal business has been the construction of large commercial vessels for shipping and industrial customers. Its documented product mix includes oil tankers, bulk carriers and container ships, with occasional construction of smaller passenger ferries and yachts. The yard’s capabilities have also included ship design, fabrication, outfitting, conversion and repair, although the available reference material does not provide a complete current service catalogue. Following Croatian independence, 3. Maj continued as part of Croatia’s shipbuilding sector. Like many European shipyards, it has operated in an industry affected by global competition, volatile ordering cycles, financing requirements and changes in maritime demand. In 2013, the shipyard was merged into Uljanik shipbuilding company, marking a significant change in its corporate organization. The supplied sources do not establish the company’s present ownership, workforce, order book or independent legal and operating status with sufficient certainty. Accordingly, 3. Maj is best described as a historically important Croatian shipyard whose current status requires verification through up-to-date corporate records and official announcements.
History
3. Maj developed within Rijeka’s long-standing role as a port and industrial center. The first docks associated with the yard were erected in 1892 as an affiliate of Howaldtswerke, a German shipbuilding company based in Kiel. When the lease connected with that arrangement expired in 1902, the facility entered a period of low activity. In 1905, three businessmen from Budapest resumed operations under the name Danubius. The company adopted the name Ganz & Co. Danubius in 1911. The yard expanded during the 1910s, when Rijeka was known as Fiume and formed part of the Kingdom of Hungary’s maritime and industrial framework. It became the largest shipyard in Hungary and built a wide range of vessels, including commercial ships and warships. Its most historically prominent construction was SMS Szent István, a battleship associated with the Austro-Hungarian navy and regarded in the reference material as the largest ship or warship built by Hungary. The end of the First World War brought major political and administrative changes to Rijeka. In 1920, after the creation of the Free State of Fiume and the movement of the city into Italian possession, the yard was renamed Cantieri Navali Quarnero. Its operations were subsequently shaped by the Italian maritime environment and by the changing strategic importance of the port. During the Second World War, the shipyard was destroyed and had to be rebuilt. In the postwar Yugoslav period it operated under the name Kvarnersko Brodogradilište. In 1948, it was renamed 3. Maj, or “3 May.” The name commemorates 3 May 1945, the date associated with Rijeka’s liberation from Axis occupation. The renamed yard became part of Yugoslavia’s state-supported industrial and maritime system. Throughout the Yugoslav era and in the period after Croatia’s independence, the yard concentrated on commercial shipbuilding. Its principal vessel categories included oil tankers, bulk carriers and container ships. It also built smaller passenger ferries and yachts on occasion. The shipyard’s work consequently covered both heavy industrial production for global shipping customers and more specialized vessel projects. Croatia’s transition to an independent state placed 3. Maj within a shipbuilding industry facing international competition, cyclical demand, complex vessel financing and pressure from larger global production centers. The available reference material does not provide a continuous account of every ownership change, restructuring program or production period. It does establish that, in 2013, 3. Maj was merged into Uljanik shipbuilding company. That transaction connected the Rijeka yard with a broader Croatian shipbuilding organization. The supplied material does not reliably document the shipyard’s current corporate ownership, operating capacity, workforce, order book or legal status. Its historical importance, however, is clear: 3. Maj is one of Rijeka’s major industrial institutions and a long-running representative of Croatian and former Yugoslav commercial shipbuilding.
- 2013Merged into Uljanik shipbuilding company
3. Maj was merged into Uljanik shipbuilding company, altering its corporate structure and group affiliation.
- 1948Renamed 3. Maj
The postwar shipyard, previously known as Kvarnersko Brodogradilište, was renamed 3. Maj.
- 1945Rijeka liberated from Axis occupation
3 May became the commemorated date later used in the shipyard’s name, marking the liberation of Rijeka from Axis occupation.
- 1920Renamed Cantieri Navali Quarnero
Following political changes in Rijeka and its transfer into Italian possession, the shipyard received the name Cantieri Navali Quarnero.
- 1911Renamed Ganz & Co. Danubius
The operating company adopted the name Ganz & Co. Danubius as the yard expanded.
- 1905Operations resumed under Danubius
Three businessmen from Budapest restarted the shipyard under the name Danubius.
- 1902Initial lease expired
The original lease arrangement ended, after which the facility experienced a period of limited activity.
- 1892First docks established
The first docks associated with the future 3. Maj yard were established in Rijeka as an affiliate of Howaldtswerke of Kiel.
Products and positioning
A historic Croatian commercial shipyard serving international maritime and industrial customers, with particular experience in large merchant vessels.
Oil tankersCommercial vessels
Oil tankers are one of the main vessel categories associated with 3. Maj. These ships are built for commercial operators transporting liquid petroleum cargoes and require large-scale hull construction, cargo containment, propulsion, safety and systems-integration work.
Bulk carriersCommercial vessels
Bulk carriers formed another important part of the yard’s merchant-shipbuilding portfolio. They are designed to transport unpackaged dry cargoes such as mineral products, agricultural commodities and other bulk materials, combining high-capacity hulls with cargo-handling and loading systems.
Container shipsCommercial vessels
Container ships are among the commercial vessel types attributed to 3. Maj. Their construction involves the integration of cellular cargo spaces, deck equipment, propulsion systems and navigation infrastructure for scheduled liner and intermodal freight operations.
Passenger ferriesPassenger vessels
The yard has also occasionally constructed smaller passenger ferries. These projects differ from large merchant vessels by emphasizing passenger capacity, vehicle or cargo access where applicable, accommodation, accessibility and compliance with passenger-vessel safety requirements.
YachtsSpecialty vessels
Yachts represent an occasional and more specialized part of the yard’s documented output. Compared with standard commercial ships, yacht projects generally require more customized interior, outfitting and accommodation work, although the available source does not specify individual yacht programs.
WarshipsNaval vessels
During the Austro-Hungarian period, the yard built naval vessels as well as merchant ships. The best-known example is SMS Szent István, a major battleship constructed when the facility operated within the Ganz-Danubius system.
Flagship businesses
- Large commercial shipbuilding
- Tanker construction
- Bulk-carrier construction
- Container-ship construction
Brand decisions
- 2013Merger into Uljanik shipbuilding companyM&A
3. Maj was operating within Croatia’s shipbuilding sector, where corporate consolidation formed part of the industry’s changing organizational structure.
What changed. The shipyard was merged into Uljanik shipbuilding company.
Aftermath. The merger placed 3. Maj within the Uljanik shipbuilding structure. The available source does not provide sufficient detail on the transaction’s financial terms or subsequent operating results.
- 1948Adopted the 3. Maj nameStrategy
After wartime destruction and postwar reconstruction, the shipyard operated as Kvarnersko Brodogradilište within the Yugoslav system.
What changed. The yard was renamed 3. Maj in reference to 3 May 1945, the date associated with Rijeka’s liberation from Axis occupation.
Aftermath. The new name became the shipyard’s enduring modern identity.
Recent events
- 20133. Maj merged into Uljanik shipbuilding company
3. Maj was merged into Uljanik shipbuilding company, changing its corporate organization and linking the Rijeka yard with the wider Uljanik shipbuilding structure.
M&A
Sources
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