Ammonia Dual-Fuel VLACs: What the New Gas Fleet Means

Eastern Pacific Shipping named its first ammonia dual-fuel very large ammonia carrier at HD Hyundai Heavy Industries in Ulsan, with delivery scheduled for November after sea trials, according to Splash247 (October 2026). In the same week, Maersk Tankers moved closer to converting four VLACs to run on the cargo they carry after its RIPPLE retrofit proposal was selected for support under the EU Innovation Fund, Splash247 reported.

For a ship chandler, bunker supplier, port agent or repair yard, the signal is a new class of gas carrier entering service. These vessels carry ammonia as cargo and, in the retrofit case, intend to burn it. That changes what they need at a berth.

What happened and when

Two separate announcements landed within hours of each other on 22 October 2026.

• Newbuild: Idan Ofer's Eastern Pacific Shipping christened the 93,000 cubic metre Terra Clove at the Ulsan yard, bringing the vessel closer to commercial debut.
• Retrofit: Maersk Tankers confirmed its RIPPLE project would install dual-fuel, two-stroke ammonia engines on four vessels, pending finalisation of the grant agreement, per Hellenic Shipping News (October 2026).

Both point the same way. Ammonia is moving from a cargo handled at a handful of terminals to a fuel a commercial fleet intends to consume.

Why the technical side matters to suppliers

Ammonia dual-fuel engines are not a simple drop-in. A 2023 study in Renewable and Sustainable Energy Reviews examined an ammonia/diesel dual-fuel marine engine and identified high ammonia slip and high nitrogen oxide and nitrous oxide emissions as the main issues, with combustion behaviour sensitive to injector configuration and injection timing.

Read that as an operational fact: a VLAC burning ammonia needs tighter monitoring, trained crews and specialist support than a conventional gas carrier. The same review found that replacing natural gas with ammonia at the same diesel energy share produced considerably poorer combustion performance, so engine tuning and fuel handling remain active engineering questions.

Electrification is advancing in parallel for smaller vessels. A 2023 paper in IEEE Access set out a geometric-programming method for sizing lithium-ion batteries on a coastal bulk carrier, showing how design-stage optimisation is being applied to alternative propulsion. A companion article in IEEE Electrification Magazine notes that variation in ship sizes, types and routes, plus their distance from grids, complicates marine electrification. Neither technology removes the need for shore-side service work at the berth.

The market context: a fleet that is not switching as fast as orders suggest

Shipowners speaking at the tenth Annual International Shipping Forum in Pudong, Shanghai, warned that regulatory uncertainty and limited shipbuilding capacity could delay wider adoption of alternative fuels beyond 2030. Orders for methanol-capable vessels may not translate directly into fuel demand, Hellenic Shipping News reported (October 2026).

That gap between orderbook and fuel use is where suppliers earn money. Dual-fuel vessels still burn conventional fuel on most voyages while the ammonia supply chain builds out. A VLAC on a gas carrier berth needs the same husbandry, provisions, spares and technical support as any other ship, plus the specific requirements of a gas carrier.

Two other market forces shape the timing. Drewry counted 55 containership transits of the Suez Canal in the week ended 18 October, describing steady transit traffic, according to Hellenic Shipping News (October 2026). Routing decisions change which ports see which vessels. Meanwhile Goldman Sachs analysis released on a Wednesday put global average crude freight rates above $20 per barrel, up from $3 a year earlier, with the rise starting in the VLCC segment and Middle Eastern routes before spreading, Hellenic Shipping News reported (October 2026). Higher freight income funds retrofit and newbuild decisions of exactly the kind Maersk Tankers and Eastern Pacific have just made.

What it means commercially for maritime service providers

A gas carrier port call is not a container ship port call with a different hull colour. The buying pattern differs by role and by vessel type.

Service providerWhat the new gas fleet changesWho to reach Ship chandlerProvisions, bonded stores and deck/engine consumables for a technically demanding vessel; longer alongside time during gas operationsTechnical superintendent, purchasing superintendent, port captain Bunker supplierDual-fuel vessels need conventional fuel now and alternative fuel capability later; enquiries shift to fuel-grade questionsChartering, fuel procurement, operations Port agentHusbandry for gas carriers involves terminal liaison, documentation and crew movement around cargo operationsPort operations, fleet manager, DOC holder Repair yardRetrofit and engine work on dual-fuel installations, plus scheduled dry-dock planningTechnical manager, fleet director

Three practical responses follow.

1. Track the vessel, not the headline. A named VLAC has a delivery date, a sea trial and a maiden voyage. Each of those is a port call you can plan around before the ETA is confirmed.
2. Quote the gas carrier specification. Ammonia handling, gas detection and crew competence are legitimate reasons your service costs more than a standard bulker call. Say so in the quotation.
3. Separate the fuel story from the service story. The fuel transition may slip past 2030. The vessel still needs stores this quarter.

Reading the wider news flow correctly

Not every headline in a shipping week is a demand signal. The Loadstar reported that Mexican airlines are eager to launch new US flights after restrictions were lifted, but with no freighters involved (The Loadstar, October 2026). Air cargo capacity has no bearing on a chandler's order book.

Freight forwarding consolidation does matter indirectly. The Loadstar also reported Kuehne + Nagel cementing its Air & Sea leadership position (The Loadstar, October 2026) and covered Brazil's Craft in a European M&A story (The Loadstar, October 2026). Consolidation among forwarders shifts volume between ports and changes which accounts are worth a call.

Security risk remains a live variable in the Gulf. Seatrade Maritime News reported a fire on a KOTC vessel struck off Oman and a tanker hit near Iraq, noting attacks have slowed from the first half of October (Seatrade Maritime News, October 2026). Suppliers quoting Gulf port calls should keep war risk and crew safety in the conversation.

Shipyard capacity is the other constraint. A union leader began a sit-in on a crane at Hyundai Heavy Industries' Ulsan yard, according to The Maritime Executive (October 2026). Labour disruption at a major yard affects delivery schedules for vessels like the Terra Clove and, by extension, when their first port calls happen.

Autonomy is advancing alongside. HD Hyundai and Anduril reported the first demonstration of an autonomous vessel for the US Navy, The Maritime Executive reported (October 2026). Fewer crew on some hulls changes provisioning volumes, not the need to win the account.

How VesselReach helps

Gas carrier port calls reward suppliers who contact the right person before the vessel berths. VesselReach detects vessels near your chosen ports and those scheduled or expected to arrive, so you see a VLAC on the approach rather than after it docks.

• AI company targeting identifies which company behind each vessel is the right one to approach, which means you reach the technical manager who buys engine support rather than a chartering desk that does not.
• Decision-maker discovery finds operations, technical and purchasing superintendents by role, so your gas carrier quotation lands with the person who approves it.
• Staged email, WhatsApp and phone outreach with automated follow-ups keeps a dual-fuel retrofit enquiry alive across a long planning cycle, and AI enquiry handling answers routine questions from approved information while escalating anything it cannot verify to your team on the Android or iOS app.

Book a VesselReach demo to see how vessel arrivals at your ports become qualified sales conversations.