Sallaum Lines‘ latest order for an LNG dual-fuel, ammonia-ready Pure Car and Truck Carrier (PCTC) represents more than another fleet expansion. It reinforces a growing trend among the world’s leading vehicle carriers in investing in vessels that reduce emissions today while preserving flexibility for tomorrow.
The company has signed a contract with China Merchants Shipyard for one firm and one optional 8,600 CEU PCTC for delivery in 2029. The order follows Sallaum‘s recent agreement with Xiamen Shipbuilding for two further 8,600 CEU vessels and brings the company’s newbuilding programme to nine ships with a reported value exceeding US$850 million.
On its own, the announcement covers another newbuild in a very active PCTC sector orderbook. However, it also shows how fuel strategy within the sector is beginning to converge.
While different shipping sectors continue to explore competing fuel pathways, many of the world’s largest vehicle carrier operators are arriving at remarkably similar conclusions. When moving from standard marine fuels, LNG is increasingly being adopted as the practical transition fuel for vessels entering service during the second half of this decade, while ammonia is emerging as the preferred long-term option should fuel availability, regulation and economics develop as anticipated.
Grimaldi Group has ordered one of the industry’s largest ammonia-ready fleets, with up to 17 vessels carrying RINA ammonia-ready notation. Wallenius Wilhelmsen‘s 9,300 CEU Shaper-class vessels combine methanol dual-fuel capability with ammonia-ready designs, while Höegh Autoliners‘ Aurora-class newbuilds have been engineered to accommodate both ammonia and methanol in the future. Sallaum’s latest order now places the company firmly alongside that group.
For PCTC operators, that approach reflects the commercial realities of deep-sea shipping. Newbuilds are expected to remain in service for 25 to 30 years, yet there remains considerable uncertainty over which low-carbon fuels will become widely available, where bunkering infrastructure will develop and how future regulation will evolve. Building fuel flexibility into today’s ships has become a way of managing that uncertainty.
The strategy also reflects the operational characteristics of the PCTC sector. Vehicle carriers typically operate on long international routes linking major automotive production centres with consumer markets across Europe, Asia, North America and the Middle East. Unlike regional shipping sectors, they require fuels that can support long voyages while being available across an expanding global bunkering network.
That may help explain why LNG has gained such strong traction. It offers immediate emissions reductions and an increasingly established global supply network, while ammonia-ready designs preserve the option of adopting a carbon-free fuel if production, infrastructure and regulation mature during the vessels’ operating lives.
The broader significance extends beyond the PCTC sector itself.
Recent developments across maritime decarbonisation suggest the industry’s focus is gradually shifting away from identifying a single fuel. Instead, shipowners are increasingly investing in optionality while waiting for fuel production, bunkering infrastructure and regulation to mature.
Hydrogen developers are concentrating on building complete supply chains rather than individual vessels. Methanol projects are increasingly focused on creating integrated regional fuel ecosystems. Carbon markets are evolving to provide the commercial signals needed to support investment. The latest generation of PCTCs reflects the same thinking, recognising that future competitiveness may depend as much on flexibility as on fuel choice.
Whether ammonia ultimately becomes the dominant zero-carbon fuel for deep-sea vehicle carriers remains uncertain. Methanol, hydrogen and other alternatives continue to evolve, while the economics of each pathway remain highly dependent on future production costs and infrastructure development.
For now, however, rather than trying to predict which fuel will prevail, leading PCTC owners are building fleets designed to adapt. Sallaum‘s latest order suggests that, in one of shipping’s most specialised sectors, optionality has become one of the industry’s most valuable design features.
