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Windward on dark fleet: What the Venezuela tanker seizure signals

Company highlighted US’ seizure of tanker “Skipper” and how this indicates that the dark fleet’s days of operating with impunity are numbered.

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RESIZED Shaah Shahidh on Unsplash

Maritime AI™ company Windward on Tuesday (16 December) wrote an article highlighting US’ seizure of tanker Skipper and how this indicates that the dark fleet’s days of operating with impunity are numbered: 

From Monitoring to Intervention

The dark fleet – tankers engaging in dark activities while moving sanctioned oil, cycling through false flags, and obscuring ownership – has continued to expand, reaching more than 1,900 vessels by the end of Q3. Governments had visibility into this activity. What was less consistent was how that intelligence translated into enforcement outcomes.

That changed with the seizure of Skipper.

When U.S. forces boarded and seized the large crude carrier off the coast of Venezuela, it marked a shift in how sanctions enforcement is being applied. The operation did not rely on a military escalation or a declared conflict. It was grounded in documented sanctions violations, false flagging, and the vessel’s lack of legitimate nationality.

For years, dark fleet vessels operated in the space between detection and consequence. The Skipper seizure shows that this space is narrowing. Vessels that rely on spoofing, false registries, and legal ambiguity are now facing direct intervention, not just continued monitoring.

What the Skipper Seizure Reveals About the Modern Dark Fleet

Skipper was not an outlier. It represented the dominant operating model of today’s dark fleet.

Sanctioned in 2022 for its role in an oil-smuggling network tied to Iran and Hezbollah, the vessel continued operating by exploiting systemic weaknesses. It broadcast AIS data that later proved inconsistent with its true movements.

At the time of the boarding, Skipper’s AIS placed the tanker more than 500 nautical miles away, off the coast of Guyana. Windward’s Remote Sensing Intelligence showed otherwise. Satellite-based detections confirmed the vessel was nowhere near its declared position and had been conducting GNSS manipulation since October 28, broadcasting false coordinates while covertly loading sanctioned crude at Venezuela’s José terminal.

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Its position reappeared more than 360 nautical miles from its last spoofed signal. It sailed under the flag of Guyana, a registry that has not existed since 2021, rendering the vessel effectively stateless.

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This combination – sanctions exposure, AIS manipulation, and false flagging – is now common. Roughly 400 tankers are currently broadcasting affiliation with fraudulent registries listed by the International Maritime Organization, with nearly 300 already sanctioned. Together, they form part of a broader dark fleet of around 1,000 tankers transporting sanctioned oil for Russia, Iran, and Venezuela.

What distinguishes Skipper is not its behavior, but the response it triggered.

What Has Changed in Enforcement Posture

The seizure of Skipper reflects a more direct application of existing sanctions authorities rather than a new legal framework.

The day after the seizure, the United States sanctioned six shipowners whose VLCCs had been transporting Venezuelan crude. According to the U.S. Treasury, four of those vessels manipulated AIS to conceal port calls and vessel movements. These practices were already well documented. What changed was how that information was acted upon.

In Skipper’s case, the vessel was sanctioned, falsely flagged, and effectively stateless. Those conditions removed many of the protections that dark fleet operators have historically relied on to continue trading despite enforcement pressure. The seizure did not require a military escalation or a new sanctions regime. It relied on existing legal authorities applied decisively.

This signals a narrower but more consequential shift: when sanctions violations, AIS manipulation, and false flagging converge, enforcement may no longer stop at designation alone. Physical intervention has become a viable outcome under specific, documentable conditions.

What Governments Should Expect Next

As enforcement accelerates, pressure will shift upstream.

Interdictions will increasingly rely on early detection rather than last-minute response. Authorities will need to identify which vessels are moving toward seizure-grade risk before they enter contested waters or complete cargo transfers. That requires more than static sanctions lists or AIS tracks viewed in isolation.

Dark fleet operations are networked. Vessels share ownership structures, registries, operational patterns, and deceptive behaviors across regions. AIS manipulation rarely occurs alone. It coincides with false documentation, implausible routing histories, and coordinated loitering patterns that only become visible when viewed as part of a wider system.

Governments that surface these connections early will be positioned to act decisively. Others will remain reactive.

 

Photo credit: Shaah Shahidh on Unsplash and Windward
Source: Windward
Published: 18 December, 2025

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Technology

Malaysia: Maharani Freeport to implement MFM and e-BDN technologies for enhanced bunkering transparency

Initiatives reflect the Freeport’s commitment to delivering transparency, operational integrity and international best practices across its bunkering ecosystem, says MEG spokesperson.

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Maharani Freeport, a National Project officially launched by His Majesty Sultan Ibrahim, King of Malaysia, in November 2025, will be introducing mass flowmeter (MFM) and electronic bunker delivery note (e-BDN) technologies to its bunkering operations, learns Manifold Times.

These strategic initiatives underscore the port’s commitment in establishing a highly transparent, efficient and trustworthy bunkering environment, aligned with global best practices and addressing critical industry demands, according to a Maharani Energy Gateway (MEG) spokesperson.

MEG is the Master Developer of Maharani Freeport and seeks to position the Freeport as a strategic nexus for shipment, storage and trading operations on a global scale. MEG Synergy is the trading division and a wholly owned entity of MEG; it seeks to position Maharani Freeport as a strategic nexus for shipment, storage, and trading operations on a global scale.

As part of its long-term bunkering strategy, the Freeport is currently in the process of acquiring bunker vessels of various sizes to support marine fuel deliveries and accommodate the evolving requirements of regional and international customers. These vessels will be equipped with MFM technology to ensure accurate, transparent and efficient fuel transfer operations.

Including bunkering and ship-to-ship (STS) trading operations from its High Sulphur Fuel Oil (HSFO) Floating Storage Unit (FSU), MEG Synergy already oversees a healthy volume of Bunker cargo deliveries to regional players each month.

MFM for Trust, Transparency and Traceability

MEG highlighted the custody transfer of bunker fuels at the Freeport will be handled by MFM-equipped bunker tankers.

“The adoption of MFM technology to support bunkering operations is a direct response to persistent industry challenges such as quantity discrepancies and delivery disputes,” explained the spokesperson.

“By equipping our bunker vessels with certified mass flowmeters, we aim to ensure precise and verifiable fuel delivery measurements.

“This initiative is pivotal in fostering trust among customers and strengthening the Freeport’s reputation as a professionally managed zone where businesses can operate with confidence. The overarching goal is to create a secure and well-governed environment for commercial activities, reducing operational risks and uncertainties while supporting efficient and transparent trade.”

e-BDN to Digitalise Documentation Workflow

The implementation of electronic bunker delivery notes (e-BDN), together with MFM technology, further aligns with the Freeport’s focus on creating comprehensive digital custody transfer records and robust data retention systems, added the spokesperson.

This digital approach, integrated with MFM technology, will streamline operational workflows, reduce administrative burdens and provide an immutable record of transactions to enhance transparency, minimising potential friction and expediting dispute resolution

MEG emphasised that the Freeport’s commitment extends beyond technological enhancements to encompass a comprehensive governance framework.

The port aims to adhere to stringent international standards, including those established by the International Maritime Organization (IMO), while offering dispute resolution mechanisms under the International Chamber of Commerce (ICC) to ensure the swift and fair handling of disagreements.

This holistic approach to operational integrity and governance is designed to address perceived transparency gaps, positioning the Freeport as a reliable and commercially attractive hub for the maritime and commodities sectors.

Note: For enquiries in respect of Maharani Freeport, readers may reach out to:

[email protected]

Related: Interview: Maharani Energy Gateway – Forging a new energy nexus in the Straits of Malacca
Related: New Johor bunkering hub: Maharani debuts as Malaysia’s first duty-exempted energy freeport

 

Photo credit: Maharani Energy Gateway
Published: 15 July 2026

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Norwegian Cruise Line to enhance bunker procurement process with ZeroNorth

By leveraging ZeroNorth’s Bunker Procurement Solution, NCLH will create greater efficiencies across the bunker procurement process while enhancing transparency, supplier collaboration, and decision-making.

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Norwegian Cruise Line to enhance bunker procurement process with ZeroNorth

Maritime technology solutions provider ZeroNorth on Thursday (9 July) said it is partnering with Norwegian Cruise Line Holdings to enhance bunker procurement processes through digital innovation.

“By leveraging ZeroNorth’s Bunker Procurement Solution, NCLH will create greater efficiencies across the bunker procurement process while enhancing transparency, supplier collaboration, and decision-making,” the company said in a social media post. 

ZeroNorth added that fuel procurement is one of the most complex functions in operating a global cruise fleet. 

“Balancing market dynamics, supplier options, operational schedules, and cost considerations require timely insights and the right technology,” it said. 

Lory Urdaneta, Senior Director Energy Strategy at Norwegian Cruise Line Holdings, said: “At Norwegian Cruise Line Holdings, we are committed to embracing innovative technologies that strengthen our operations and deliver long-term value. 

“Our partnership with ZeroNorth is an important step in enhancing our bunker procurement process through greater transparency, data-driven decision-making, and operational efficiencies. We look forward to working together to drive innovation and support the continued evolution of our procurement capabilities.”

 

Photo credit: ZeroNorth
Published: 10 July, 2026

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Interview

StormGeo: UAE’s OPEC exit raises stakes for bunker procurement

UAE’s exit from OPEC could weaken the group’s market influence, increasing crude and bunker fuel volatility and boosting demand for digital bunker procurement and voyage optimisation tools, says Julie Louise Nielsen.

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Julie Nielsen Global Head of Bunker Sales StormGeo MT

Julie Louise Nielsen, Global Head of Bunker Sales at StormGeo, highlighted to Singapore-based bunkering publication Manifold Times that the UAE’s departure from OPEC marks a more significant shift than the earlier exits of Qatar and Angola, reflecting the country’s strategic importance as a major producer with substantial spare capacity.

Nielsen said the move is expected to increase uncertainty in crude and marine fuel markets, prompting shipping companies to strengthen bunker procurement strategies through greater use of digital decision-support platforms: 

MT: How significant is the UAE’s departure from OPEC compared with previous exits by Qatar and Angola, and what does it mean for OPEC’s ability to influence global oil markets?

The UAE’s exit is materially more significant than Qatar’s or Angola’s because the UAE has been one of OPEC’s most strategically important producers, with meaningful spare capacity and a much larger role in market balancing. Qatar’s departure in 2019 and Angola’s in 2024 were important politically, but they were smaller in market impact. The UAE’s move is therefore more than symbolic – it raises a real question about how much cohesion OPEC can still maintain, and whether the group can continue to steer prices as effectively as it has in the past.

MT: How might this development affect expectations for crude oil and marine fuel prices over the next 12 to 24 months?

In the next 12 to 24 months, I would expect the market to price in a little less discipline and a little more uncertainty. If the UAE uses its new flexibility to lift output, that could cap upside in crude over time, but the bigger effect may be on volatility rather than direction. For marine fuel buyers, that means more frequent swings in bunker costs and less confidence that prices will stay in a narrow range for long. In StormGeo we already see a spike of interest for our s-Bunker solution which includes one of the market’s most advanced bunker planner solutions. Companies are facing the issue of keeping up with the market volatility, and see the benefits of having a solution recommending where to bunker and how much, as well as having a full audit trail of the decision to prove that this was the right decision at the time. We have also lately hosted a webinar about this, which also showed us the real interest from the market, with many participants as well as many good questions.

MT: Could the weakening of OPEC’s cohesion lead to more regional disparities in bunker fuel pricing across major ports?

Yes, most probably. A less cohesive OPEC means the market becomes increasingly influenced by regional supply dynamics and geopolitical events rather than coordinated production policy. For shipping, the Strait of Hormuz remains one of the most critical chokepoints, with around one-fifth of global oil passing through it. Any disruption – whether from political tensions, security incidents, or shipping restrictions – can quickly affect crude availability, freight costs, insurance premiums, and ultimately bunker prices in ports across the Middle East and Asia. As a result, we are likely to see greater regional price disparities, where local market conditions become just as important as movements in global crude benchmarks.

MT: How does increased fuel price volatility affect bunker procurement strategies and voyage planning?

Volatility pushes shipping companies to be much more disciplined in how they buy fuel and plan voyages. Instead of relying on fixed assumptions, they need to time purchases more carefully, compare more ports, and test whether a deviation or a different stem location actually improves net voyage economics. It also makes scenario planning more important, because a small change in bunker price can quickly alter voyage margin, cargo economics, and even routing decisions. I foresee that those companies who are not considering going digital on bunker management will fall short compared to their competitors who have already implemented a fully digital process for their voyage optimization.

MT: How can digital bunker management and voyage optimisation platforms help shipowners navigate a more volatile fuel market?

Digital platforms help by giving owners better visibility, faster decision-making, and a more consistent way to compare fuel options across ports, suppliers, and voyage scenarios. In a volatile market, the value is not just automation – it is control: being able to see expected cost, compare alternatives quickly, and lock in a better decision before the market moves. They also help reduce manual work, which matters when procurement teams are making more decisions under tighter time pressure. What I believe is important as well is to not silo the voyage optimizations. Combining your full voyage optimization with a software provider having a full end-to-end solution is key, to ensure that all decisions are made on the same data inputs. In StormGeo, we are proud of being a one-solution provider, and we do see that this is becoming a growing requirement from the market.

MT: Have you observed growing demand from shipping companies for real-time bunker pricing and procurement tools in recent years? Could you share some data to demonstrate this?

Yes, without question. Over the past few years, we’ve seen a clear shift in how shipping companies approach bunker procurement. Rising fuel costs, increased market volatility, and a greater focus on operational efficiency have all driven demand for real-time pricing, market intelligence, and digital procurement tools.

That said, we still meet companies that believe their current manual bunker procurement process is the right way of working. A common response is, “We’re already performing well.” I never challenge whether they are doing something wrong – that’s for them to conclude. Instead, I ask a simple question: How do you know you’re performing well if you’re not using data to measure it? And this questions are very often not being met with an answer, but more a questionable expression. In today’s shipping industry, where digital solutions are transforming almost every operational process, I still find it surprising that some organizations remain hesitant to embrace data-driven decision-making in bunker procurement.

Companies that have adopted digital solutions are no longer looking for a simple list of bunker prices. They want the ability to compare suppliers, evaluate alternative bunker ports, understand the commercial impact of different procurement strategies, and make informed decisions based on real-time market intelligence. This is particularly important when fuel remains one of the largest operating expenses for a vessel.

We continue to see growing adoption of digital bunker management solutions among both shipowners and operators, and our onboarding pipeline continues to grow. More companies are moving away from manual, spreadsheet-based processes towards integrated platforms that combine live pricing, procurement workflows, voyage planning, and advanced data analytics. Based on customer performance reviews conducted after implementing our platform, we frequently see bunker cost improvements of up to USD 30 per metric tons compared with previous manual procurement processes. Beyond the direct financial savings, the objective is to improve transparency, reduce administrative workload, and enable procurement teams to make faster, more informed decisions in an increasingly volatile fuel market.

 

Photo credit:StormGeo
Published: 1 July, 2026

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