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tems. In many cases, biofuel blends can be used without significant technical modifications, enabling immediate emissions reductions without major capital investments in new vessels.

However, scalability remains a key constraint. Sustainable feedstock availability is limited, and competition for biomass resources is increasing across multiple sectors, including aviation and road transport.

For this reason, biofuels are generally considered a transitional measure rather than a long-term global solution.

REGULATION AS THE PRIMARY MARKET DRIVER

Alongside technological development, regulatory pressure is the most significant driver shaping fuel choices in the maritime sector.

IMO decarbonization strategies, the EU Emissions Trading System( EU ETS), and FuelEU Maritime regulations are all influencing investment decisions and operational strategies. Collectively, these frameworks are increasing the cost of

carbon-intensive fuels and incentivizing lower-emission alternatives.

At the same time, uncertainty remains a defining feature of the transition. With vessel lifespans often exceeding 20 – 25 years, shipowners must make long-term investment decisions without full clarity on which fuel pathways will dominate in the mid- to long-term future.

This creates a complex risk environment for shipyards, operators, and equipment manufacturers alike.

A MULTI-FUEL FUTURE IS INCREASINGLY LIKELY

Despite ongoing competition between different technologies, a single dominant fuel appears increasingly unlikely in the near term. Instead, the industry is moving toward a multi-fuel ecosystem.

Methanol is likely to gain traction in container shipping, ammonia may dominate in deep-sea and high-energy-demand segments, LNG will continue to serve as a transitional solution, and biofuels will support immediate emissions reductions in existing fleets. In parallel, synthetic e-fuels may play a growing role in the longer term as production scales.

For the maritime industry, this diversification presents both challenges and opportunities. While technological uncertainty complicates investment planning, it also creates new business opportunities across fuel systems, engine technology, safety engineering, and infrastructure development.

The fuel transition is still in its early phases. What is already clear, however, is that the future of shipping will not rely on a single energy source, but rather on a combination of multiple fuels operating in parallel under increasingly stringent environmental regulation. n

12 seatec 2 / 2026