TO SAY that Singapore is an important maritime power is to state the obvious. The port of Singapore is the second-busiest port in the world by traffic. But its role as the world’s largest bunkering and transhipment hub makes it stand out when it comes to decarbonisation.

Much of the maritime activity passing through Singapore exists because the country is a node in somebody else’s journey, not because Singapore itself produces or consumes the cargo. That makes measuring its maritime transition particularly important. It also makes it complicated.

T&E’s recent dashboard looks at Singapore’s maritime emissions across different boundaries. In a maritime system such as Singapore’s, a single emissions figure misses the point.

Looking at vessel types and the emissions linked to their voyages, we can see which parts of the fleet matter most. Containerships and tankers account for nearly 85% of vessel emissions linked to Singapore. That makes sense for a key transhipment and bunkering hub connecting some of the world’s biggest markets.

Once ships are in Singaporean waters, 54% of emissions occur at berth. That helps put Singapore’s growing focus on electrification into context. Electric harbour craft, charging infrastructure and an increasingly electrified and automated Tuas mega port are no longer just separate maritime initiatives. We can see what these efforts are trying to address.

Identifying where change can happen is one thing. Making it happen at scale is another.

Singapore has done this before. When the International Maritime Organization sulphur cap came into force in 2020, its bunker market adapted quickly to the new rules. High-sulphur fuel oil, which had long dominated bunker sales, rapidly gave way to very low sulphur fuel oil. For the world’s largest bunkering hub, that meant changing what was supplied to ships at enormous scale.

Emission reductions paths

The next transition will be much harder. Shipping needs to move away from fossil fuels altogether, while electrifying vessels and port operations wherever possible. That means understanding which fuel pathways can deliver real emissions reductions, where electrification makes sense and which vessels and routes are best suited for it.

We can already see the beginnings of that shift. Sales of alternative marine fuels in Singapore have accelerated since 2022, including LNG, methanol and biofuels. But a changing fuel mix alone does not tell us whether shipping is decarbonising. How those fuels are produced and the emissions they generate across their lifecycle matter too.

And Singapore cannot make this transition alone. Ships move between ports, fuel supply chains cross borders and decisions here are shaped by what happens elsewhere in the region. That means progress will increasingly depend on regional co-operation too, especially as neighbouring ports face many of the same choices around fuels, infrastructure and electrification. Shorter regional routes, including ferry connections with Singapore’s neighbours, could offer some of the clearest opportunities to start. Moving together also matters for competitiveness.

Singapore can act as a window into whether the transition is actually happening. The country is simultaneously a port, bunkering hub, transhipment hub, regulator and meeting point for international shipping. That gives us several ways to track change across the sector, from the fuels being sold and the vessels calling to what happens in port.

This is why Singapore is crucial to maritime decarbonisation. The transition requires coordination across the whole shipping ecosystem, something Singapore already does at enormous scale.

That makes the little red dot not just a useful place to measure the transition, but a place to see what progress actually looks like.