A foundation supplier moves up the value chain
The offshore wind supply chain has spent years sorting itself into two camps: the factories that build monopiles and jackets, and the contractors that own the expensive, specialised vessels needed to install them. That divide is now being tested from the Chinese side.
On 28 September 2026, Offshore Wind reported that UlsteinDajin Heavy Industry had selected Norwegian naval architecture firm Ulstein Design & Solutions' ULSTEIN HX122 design for a new offshore installation vessel. If the project proceeds, it would extend Dajin's activities from foundation manufacturing, logistics and transportation into offshore installation itself — a step that few foundation fabricators have attempted.
This is not a transactional shipbuilding order in the conventional sense. It is better understood as a vertically integrating strategic move by a Chinese industrial group, paired with a Norwegian design house that has spent the last decade building a niche in heavy offshore wind construction vessels.
What the HX122 design is (and is not)
The HX122 is an Ulstein heavy offshore construction and installation vessel design. It sits within the company's established offshore wind installation portfolio, which includes the ULSTEIN HX118 and HX120 series used for foundation and turbine installation work. These vessels share several defining features:
- Heavy-lift capability for monopiles, jackets and transition pieces
- Large, unobstructed deck areas for component storage and pre-assembly
- Dynamic positioning (DP) for station-keeping in offshore wind farm conditions
- Accommodation blocks sized for large installation crews, often 100–200 persons
Ulstein's better-known design innovation is the X-BOW and X-STERN hull form — a reversed, rounded bow that cuts through waves rather than slamming into them, and a mirrored stern that allows the vessel to operate efficiently when moving in either direction. Whether the HX122 incorporates the X-STERN specifically is not confirmed in the public evidence available, though the design lineage strongly suggests a heavy-lift, DP2-class vessel in the same family. Some reporting and industry discussion around HX-series vessels has referenced very large crane capacities in the 8,000-tonne class; that figure should be treated as unconfirmed for the HX122 until Ulstein or UlsteinDajin publishes specifications.
What is known is the pattern: Ulstein designs these vessels for the foundation and turbine installation market, not for oil and gas construction, and they are typically built at Asian yards with European and Asian contractors operating them.
Why the announcement matters more than the vessel
A single installation vessel order is not, by itself, a market-moving event. What makes this announcement notable is the who, not the what.
UlsteinDajin Heavy Industry is not a traditional offshore contractor. It is a foundation manufacturer — part of the Dajin group that has been building offshore wind foundations, logistics and transport capacity in China. Foundation fabrication is a low-margin, capacity-intensive business. Installation is where the margin lives, because vessels are scarce, day-rates are high, and the barrier to entry is capital and know-how.
By selecting a Ulstein design, Dajin is signaling three things:
- It wants to control more of the value chain. Owning foundations and the ship that installs them reduces dependence on third-party installation contractors.
- It is targeting non-Chinese markets as well as Chinese ones. Ulstein design legitimacy is a calling card in European and Asian tenders where Chinese-built, Chinese-operated vessels are increasingly scrutinised.
- It is betting that the next wave of offshore wind buildout — in China, Asia-Pacific, and potentially Europe — will reward integrated suppliers.
The Ulstein Design & Solutions role is equally significant. Norwegian naval architecture has become a de facto standard for heavy offshore wind installation vessels, with Ulstein, Knud E. Hansen, Salt Ship Design and others competing for a relatively small number of orders per year. Each design win extends that franchise.
Steel and industrial implications
For readers of MetalMate, the announcement carries a steel demand signal, though it is measured in hundreds or low thousands of tonnes per vessel rather than the hundreds of thousands consumed by a major pipeline project.
| Component | Typical steel content (order of magnitude) | Notes |
|---|---|---|
| Hull, decks, superstructure | 8,000–20,000 t | Varies with size and DP/ice class |
| Heavy-lift crane steel structure | 500–2,000 t | Often supplied by crane OEM as fabricated assembly |
| Foundation and jacket interfaces | Project-specific | Depends on installation method |
| Mooring, deck fittings, casings | 200–800 t | Includes castings and forgings |
These figures are indicative estimates based on comparable installation vessels, not published HX122 specifications. The steel that matters most here is not necessarily volume — it is grade and provenance. Heavy-lift crane pedestals, A-frames and DP-critical structural nodes typically demand high-strength, crack-arrest-tested plate, often with classification society approval (DNV, ABS, Lloyd's Register). Chinese yards have demonstrated they can produce this, but the qualification and traceability requirements are the gate.
A Chinese-built, Ulstein-designed vessel would likely combine Chinese plate and fabrication with European or Asian classification and a mix of imported and domestic equipment. That mix matters to steel suppliers tracking where the next tranche of high-value plate demand lands.
The commercial and strategic context
Offshore wind installation vessel supply has been tight since 2021. Day-rates for heavy installation vessels peaked above €300,000 in some European tenders, and newbuild lead times stretched to 2027–2029. That tightness created a window for newcomers — particularly Chinese yards and Chinese owners, who can build and finance vessels at lower cost than European incumbents.
The countervailing force is policy risk. European and US markets have increasingly restricted or scrutinised Chinese-owned vessels, and Chinese-controlled installation capacity in European waters remains politically sensitive. Dajin's challenge is therefore not purely technical; it is whether a Chinese-owned, Ulstein-designed vessel can win contracts in markets where Chinese ownership is a liability.
The alternative is that Dajin builds primarily for Chinese and Belt-and-Road offshore wind markets, where the vessel is less controversial and demand is growing. That would still be a meaningful volume for the shipyard involved and for Chinese steel supply.
What we do not know
The announcement is early-stage, and several important questions remain open:
- Has the vessel actually been ordered? Selecting a design is not the same as placing a construction contract. Financing and yard selection may still be pending.
- Which shipyard? Ulstein designs are commonly built in China (at yards including CMHI, CIMC and others) or in Europe. No yard has been confirmed in available evidence.
- Timeline. No construction or delivery schedule has been published.
- Specifications. Crane capacity, DP class, ice class, accommodation and steel grades are not yet public.
- Procurement status. No steel or major equipment procurement has been confirmed.
- Operator and charter strategy. Whether Dajin will operate the vessel itself or charter it to a third party is unclear.
Readers tracking this project should watch for three signals: a formal shipbuilding contract (usually the moment steel procurement begins), a classification society announcement, and a named crane supplier. Those three events would convert this from a design selection into a real industrial project.
Bottom line
The HX122 selection is a small event with a longer tail. It marks another step in the vertical integration of Chinese offshore wind suppliers, extends Ulstein's design franchise into a new owner, and creates a future option on steel and equipment demand that depends entirely on whether the vessel gets built. For now, it is a design win — significant for the participants, speculative for the supply chain.