Singapore Bunker Fuel Supply Is Under Pressure. Here Is What That Means for Vessel Schedules and Freight Costs.

Key Takeaways

Singapore, the world’s largest bunkering hub, is operating on bunker fuel inventories estimated to cover less than a month of demand.
VLSFO prices in Singapore surged from around $486/mt in mid-February to nearly $1,000/mt by late March 2026, roughly doubling in five weeks. Prices have since eased somewhat but remain well above pre-war levels.
Lead times for securing bunker fuel in Singapore have extended to 10-12 days for VLSFO, up from typical levels. HSFO and LSMGO supply is also tight.
The pressure traces directly to Hormuz: more than 50% of Singapore’s bunker fuel supply historically flows through the strait. With Hormuz operating at a fraction of normal throughput, the supply chain is running on reserves and alternative sourcing from Brazil, Russia, and Atlantic Basin refineries.
Fujairah, previously the world’s third-largest bunkering hub, has effectively lost reliability as a refueling stop. Some bunkering continues ship-to-ship from barges, but once those stocks are depleted, bunkering at Fujairah stops.
For shippers and forwarders, the downstream effects include: longer vessel bunkering stops, potential schedule delays, carrier slow steaming to conserve fuel, and continued upward pressure on emergency fuel surcharges.

Who This Is For

This post is for freight forwarders, importers/exporters, logistics managers, and operations teams whose cargo moves on vessels that bunker in Singapore or Southeast Asia. If you are managing ocean freight schedules, quoting rates, or tracking carrier performance, the bunker supply situation is affecting your shipments even if you are not directly paying for fuel.

Why Singapore Matters for Global Shipping Fuel

Singapore is the world’s largest ship refueling port. In a normal year, it supplies bunker fuel to roughly 130,000 vessel calls. It sits at the crossroads of Asia-Europe, Asia-Americas, and intra-Asia trade lanes, making it the default refueling point for a large share of the global container, tanker, and bulk fleet.

The port’s bunkering market depends on a mix of fuel sources. Historically, a significant share of Singapore’s fuel oil and marine gasoil supply originates from or passes through the Middle East. When the Strait of Hormuz was operating normally, this supply chain was reliable and well-understood.

That supply chain is now disrupted.

What Changed

The Strait of Hormuz conflict, which escalated in late February 2026, reduced crude oil and refined product exports from the Gulf to less than 10% of pre-war levels, according to industry estimates. For Singapore’s bunkering market, this created three simultaneous problems:

1. Direct supply loss. Less fuel oil and gasoil is reaching Singapore from Gulf sources. The volumes that do arrive are taking longer and costing more.

2. Fujairah effectively offline as a bunkering hub. Fujairah, located just outside the strait on the Gulf of Oman coast, was the world’s third-largest bunkering port. Repeated attacks and operational disruption have degraded it as a reliable refueling stop. According to Ofiniti CEO Tue Nielsen, as reported by the Financial Times, bunkering at Fujairah is now limited to ship-to-ship transfers from barges, and once those stocks are gone, bunkering stops entirely. Vessels that would normally refuel at Fujairah are redirecting to Singapore, increasing demand on an already strained hub.

3. Price volatility is making suppliers cautious. Bloomberg reported that Singapore bunker distributors have been holding off on larger fuel purchases because of extreme price swings. When prices can move hundreds of dollars per metric ton in a week, distributors face significant commercial risk on inventory they have purchased but not yet sold. This caution reduces the available supply in the market even when physical stocks exist.

The Numbers

Inventory: Singapore’s residual fuel oil stocks averaged about 24 million barrels in March, supported by a 51% increase in net fuel oil imports, according to Enterprise Singapore data. That sounds robust, but at current consumption rates, it represents less than a month of demand. The buffer is real, but it is finite.

Prices: The Singapore VLSFO cargo benchmark surged from approximately $486/mt in mid-February to $988.50/mt by mid-March, according to Argus Media. By March 31, it had eased to $842.75/mt. That is still approximately 73% higher than pre-war levels. The HSFO/VLSFO spread in Singapore surged by $133 in a single week at one point, briefly reaching $250.

Lead times: ENGINE, a marine fuel procurement platform, reported that Singapore VLSFO lead times extended to 10-12 days in late March, up from 8-11 days the prior week. HSFO remained constrained at 9-13 days. LSMGO prices held at elevated levels with tight supply.

Premium over other hubs: The Singapore-Rotterdam VLSFO price spread widened from approximately $26/mt before the war to $250/mt by late March. Asian buyers are outbidding Atlantic market orders for spot fuel, creating a regional premium that reflects the severity of Asian supply tightness relative to Europe.

Where Alternative Supply Is Coming From

The market is adapting. Singapore is not about to run dry tomorrow. But the adaptation involves longer supply chains, higher costs, and less predictability.

Brazil and Russia have increased fuel oil exports to Singapore, helping offset the Gulf shortfall. According to Vortexa analyst Xavier Tang, these arrivals have kept Singapore inventories at seasonal highs in the short term.

Atlantic Basin refineries are ramping up run rates to capture high refinery margins, producing more fuel oil for export eastward. This long-haul supply is keeping the market supplied but at higher cost and with longer lead times.

Saudi Red Sea ports (Jeddah, Yanbu) and Indian/Sri Lankan ports are emerging as alternative bunkering stops for vessels rerouting away from the Gulf. This shifts the bunkering geography but does not solve the overall supply constraint.

Vessels are being used as fuel shuttles. In some cases, operators are skipping cargo altogether to transport fuel to where it is needed. Some voyages between the U.S. and Singapore have become ad hoc fuel corridors. This is unusual and signals how stretched the system has become.

What This Means for Vessel Schedules

The bunker supply situation in Singapore affects vessel operations in ways that cascade into schedule reliability for shippers:

Longer bunkering stops. With extended lead times (10-12 days for VLSFO), vessels may need to wait longer at Singapore for fuel availability. Even if the wait is only a day or two beyond normal, across hundreds of vessel calls per week, this adds up.

Slow steaming. Carriers are likely conserving fuel where possible. Slower speeds reduce fuel consumption but extend transit times. If your carrier has not announced schedule adjustments, it may be implementing them quietly through speed reductions.

Port omissions and blank sailings. If fuel cannot be sourced reliably at planned bunkering stops, carriers may adjust rotations. The risk of blank sailings tied to fuel availability is low in the short term but increases if the disruption extends past April.

Bunkering location changes. Vessels that would normally refuel in the Gulf are now bunkering in Singapore, Port Klang, Zhoushan, or even Jeddah. Changed bunkering stops can add deviation time, affecting ETAs for downstream port calls.

Emergency fuel surcharges remain in place. The bunker supply situation is the underlying driver of the emergency fuel surcharges we covered in our April 2026 EFS update. As long as Singapore VLSFO is trading 70%+ above pre-war levels, carriers have no reason to withdraw those surcharges and every reason to revise them upward.

Off-Spec Fuel Risk

Adding another layer: ENGINE flagged recent alerts around off-spec VLSFO in Singapore linked to engine damage. When supply is tight and prices are elevated, the risk of quality issues increases because the fuel being blended and sold may come from less familiar supply chains or under more commercial pressure to meet volume commitments.

For vessel operators, this means fuel quality testing and supplier vetting become more important than usual. For shippers, it means that a bunkering-related mechanical issue on your vessel is a more realistic risk factor than it would be in a normal market.

Operational Note: When bunkering constraints add uncertainty to vessel schedules, the cargo-level impact is often invisible until the ETA slips. A vessel delayed by 24 hours at a bunkering stop may not trigger a carrier advisory, but it shifts the arrival window at the discharge port and compresses the time available for inland coordination. Shipment-level visibility that tracks vessel position against schedule helps operations teams see these delays as they develop rather than after the fact.

What to Watch

Singapore inventory levels. Enterprise Singapore publishes weekly data. If residual fuel oil stocks fall below 20 million barrels, the supply buffer is thinning faster than alternative sourcing can replenish it.
Lead time trends. If VLSFO lead times in Singapore extend past 12-14 days, that signals tightening beyond what the market has already priced in. ENGINE and Manifold Times report these regularly.
Fujairah status. Any return of reliable bunkering at Fujairah would relieve pressure on Singapore. Conversely, any further attacks or disruption at Fujairah would increase the concentration of demand on Asian hubs.
Carrier schedule adjustments. Watch for quiet speed reductions, port call changes, or bunkering stop additions on Asia-Europe and transpacific services. These may not be announced as “bunker-related” but that is often the underlying driver.
Emergency fuel surcharge revisions. MSC, Maersk, CMA CGM, ONE, and Hapag-Lloyd all have active emergency fuel surcharges tied to bunker cost and availability. If Singapore prices re-spike or supply tightens further, expect upward revisions.