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APM 2024 Interview: GCMD examines decarbonisation of Singapore’s bunkering fleet, promotes biofuel fingerprinting

Dr. Prapisala Thepsithar, Director of Research & Projects, GCMD provides an update on the IMO 2030 readiness of Singapore’s bunkering fleet and discusses the significance of a completed fingerprinting study for biofuels.

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Prapisala THEPSITHAR GCMD

Dr. Prapisala Thepsithar, Director of Research & Projects, Global Centre for Maritime Decarbonisation, recently spoke with Singapore-based bunkering publication Manifold Times, ahead of the Asia Pacific Maritime (APM) 2024 to be held on 13 to 15 March. 

MT: How far is Singapore's bunkering fleet on target to meet IMO 2030 requirements?

While emissions from bunker fleets are accounted for under national emissions budget, and as such do not contribute directly to IMO’s overall GHG emissions targets, bunker vessels are responsible for delivering bunkers that contribute directly to shipping’s scope 1 emissions, and therefore play an indirect but crucial role in enabling maritime decarbonisation. As the world’s largest bunkering port (50 MPTA of bunker), Singapore thus stands to significantly contribute to achieving IMO’s targets. This will be achieved by ensuring the readiness of its future bunker fleet to supply alternative fuels to international shipping.

Singapore is home to around 200 fossil fuel bunker vessels; these are interoperable for carrying and bunkering fuel oil blends with up to 24% biofuels (B24). In a recent positive development, Annex II bunker vessels capable of bunkering fuel oil blends with more than 24% biofuels have been recently delivered to Singapore. The addition of Annex II bunker vessels will allow ship operators to readily bunker fuel blends with higher biofuels concentrations and Singapore should accordingly see an uptick in biofuels delivery as a consequence.

The port waters of Singapore is also serviced by three LNG bunker vessels that can readily bunker bio-LNG in the future, offering another “drop-in” green fuel.

As for other green fuels, the outlook for bio-methanol, green methanol, green ammonia, presents a mixed picture. Following a successful methanol bunkering trial in 2023, the construction of methanol bunker vessel is underway. The uptake of methanol as a marine fuel will depend on the life-cycle assessment (LCA) of the methanol supply.

While several approvals-in-principle (AIP) have been granted for ammonia bunkering vessels, final investment decisions are premature at this stage. This is due to the lack of commercially available ammonia-fuelled engines and the uncertain market demand for ammonia as a marine fuel. The construction of such first-of-a-kind asset faces potential low returns on investments. To facilitate commissioning, a commercial arrangement that allows shared financial and operational risks will be required.

MT: How would findings from GCMD’s fingerprinting studies with VPS impact the practicalities of local/ global deployment of biofuel blends?

Biofuels, particularly FAME and biodiesels, are promising green fuels candidates today given their "drop-in" compatibility with existing engines and bunkering infrastructure. Yet, concerns remain over their long-term impact on engines and the carbon intensities associated with their production. Specifically, land-use change associated with feedstock acquisition can lead to increased GHG emissions.

Additionally, the variable performance of biodiesels due to their chemical composition and response to environmental conditions, raises challenges within the vessel’s fuel delivery system and engines and potentially across the biofuels supply chain.

Fingerprinting techniques therefore offer a vital tool for addressing these concerns. This technique acts as a dual indicator, to trace and authenticate feedstock provenance and predict biofuels properties.

Traceability

Chemical fingerprinting can help identify the origin of FAME in biofuels. This technique, combined with others, like physical tracers and lock and-seal methodology, provides a comprehensive suite of tools for detecting fraudulent fuels. This transparency is essential for both upstream suppliers and downstream stakeholders to safeguard the green premium of biofuels, and ultimately safeguard the integrity of marine fuels supply chain.

Predicting biofuels properties

The FAME that composes biofuels determines its physical and chemical properties. Consequently, identification through chemical fingerprinting of biofuels can help predict fuel characteristics relevant to vessel performance, such as cold flow properties and oxidation stability.

This information will aid vessel operators in their handling and storage of biofuels, mitigating any potential issues, like inadvertent heating that would lead to wax formation, and clogging due to fuel degradation.

GCMD, in collaboration with VPS, has developed and deployed test methods, including one that complies with EN14103:2020 to identify FAME fingerprint in residual fuels. This process has a turnaround time of less than 24 hours; the turnaround time can potentially be further reduced to under an hour with the deployment of gas chromatography-mass spectrometry (GC-MS) for fuel compositional analysis. The swiftness of this test can lower the barrier for frequent fuels testing, which should ultimately bolster the integrity of the marine fuels supply chain.

GCMD looks forward to share more on the organisation’s work in the biofuels space at the upcoming Asia Pacific Maritime 2024.

Related: Marine Fuels 360: Fingerprinting to play key role in proving biofuel feedstock authenticity and beyond, says VPS
Related: GCMD-led consortium completes trials of sustainable biofuel bunker supply chains
Related: Singapore: VPS panel discussion presents a masterclass in shipping’s biofuel bunker adoption issues to the deck

 

Photo credit: Global Centre for Maritime Decarbonisation
Published: 12 March 2024

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Bunker Fuel

Singapore: KPI OceanConnect, partners deliver first renewable diesel to cruise industry

Delivery of bunker fuel from Neste was made at Singapore Cruise Terminal, with the fuel sourced from Vopak Penjuru Terminal and transported to a cruise ship via barge “Maple”, operated by Global Energy.

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Singapore: KPI OceanConnect, partners deliver first renewable diesel to cruise industry

Global provider of marine energy solutions KPI OceanConnect on Wednesday (8 January) said it partnered with Neste and Global Energy on the first successful delivery of renewable diesel, also known as HVO100, for the cruise industry in Singapore.

The landmark delivery of Neste MY Renewable Diesel™ took place in November 2024 and marked a significant milestone for the Asia-Pacific marine sector.

Neste MY Renewable Diesel™ is made from 100% renewable raw materials and is a direct replacement for fossil diesel, helping the industry meet its sustainability goals. 

The use of this renewable diesel can result in up to 90% greenhouse gas (GHG) emissions reduction over its lifecycle compared to fossil diesel. 

The fuel is a drop-in solution and is suitable for all diesel-powered engines without the need for additional investment or modification to engines or fuel infrastructure.

The delivery of renewable diesel from Neste was made at the Singapore Cruise Terminal, with the fuel sourced from Vopak Penjuru Terminal and transported to the cruise ship via bunker barge Maple, operated by Global Energy. 

KPI OceanConnect facilitated the successful delivery of the renewable diesel, working closely with the vessel's technical team to ensure engine compliance. KPI OceanConnect collaborated with Neste to source the fuel and with Global Energy for operational agreements in Singapore waters. 

Ee Pin Lee, Head of Commercial APAC, Renewable Products at Neste, said: "This first supply of Neste MY Renewable Diesel to the marine sector in Asia-Pacific is a significant milestone and demonstrates the versatility of the product across a wide range of applications where it can replace fossil diesel. It is an effective solution for enabling the marine sector to be more sustainable."

Chow Munee, Group Business Manager, Global Energy, added: “Partnering with Neste and KPI OceanConnect to supply renewable diesel to the marine sector in Singapore is an important step in helping our clients reduce their environmental impact. By providing seamless and reliable delivery of HVO, we are supporting the industry’s transition without compromising operational efficiency. We’re proud to play a role in driving these crucial efforts within the maritime sector.”

Jesper Sørensen, Head of Alternative Fuels and Carbon Markets at KPI OceanConnect, said: “We are proud to be industry first movers in sourcing and delivering HVO for our clients, helping them reduce their carbon footprint and achieve their environmental goals. By working closely with Neste and Global Energy, we were able to offer high-quality biofuel to our client, laying the groundwork for further fuel uptake and decarbonisation progress. This successful delivery is a testament to how partnerships can help advance the industry’s green transition.”

 

Photo credit: KPI OceanConnect
Published: 9 January, 2025

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Biofuel

CTI-Maritec: Why accurate testing of energy content is essential for bio bunker fuels

Owing to the composition of bio-marine fuels, accurate measurement of NSE / Net Heat of Combustion to correctly gauge energy content of bio-marine fuels is key for efficient fuel management onboard ships.

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Louis Reed from Unsplash

Marine environmental services and fuel testing solutions company CTI-Maritec on Wednesday (8 January) shared on why one of the most important testing parameters or properties of bio-marine fuel is energy content.

Owing to the composition of bio-marine fuels, the accurate measurement of Net Specific Energy (NSE) / Net Heat of Combustion to correctly gauge energy content of bio-marine fuels is key for efficient fuel management onboard ships: 

Introduction

Bio-marine fuel is widely adopted as a drop-in fuel to achieve the current emission requirements in the shipping industry. ISO 8217:2024 specification allows bio-marine fuels to contain up to 100% fatty acid methyl ester (FAME). The major production route of FAME is transesterification of vegetable oils, animal fats or used cooking oils with methanol using alkaline catalysts. The ISO 8217:2024 version has included additional test parameters to measure FAME content, energy content and oxidation stability for bio-marine fuels.

Accurate Net Specific Energy (NSE) assists with efficient fuel consumption management

In this newsletter article, we review why one of the most important testing parameter or property of bio-marine fuel is Energy Content. Accurate measurement of NSE for energy content of bio-marine fuels is essential for efficient fuel management onboard ships with respect to:

  • Fuel consumption
  • Voyage planning
  • Operating cost
  • Machineries or equipment performance
  • Emission & environmental implications

Why accurate testing of Energy Content is an essential test parameter for Bio-marine fuel

Marine fuel containing FAME typically has lower energy content compared to conventional marine fuels.

The heating value of a fuel is the total energy released as heat when a fuel undergoes complete combustion with oxygen under standard conditions. The chemical reaction is typically a hydrocarbon reacting with oxygen to form carbon dioxide, water and heat as shown in the equation below:

Hydrocarbon + Oxygen à Carbon Dioxide + Water + Heat Released

Conventionally, NSE of marine fuels (which consist of predominantly hydrocarbons from petroleum sources) is calculated using a formula specified in Annex of ISO 8217 (Annex J of ISO 8217:2024) with acceptable accuracy. For marine fuels containing FAME, the NSE cannot be calculated using the formula specified in Annex J of ISO 8217:2024 and shall be measured using ASTM D240 method. FAME molecules contain the Carbonyl group and Ester bonds as shown in Figure 1 below and do not consist purely of carbon and hydrogen atoms.

Figure 1: An Ester of a Carboxylic Acid

Figure 1: An Ester of a Carboxylic Acid

The density of potential energy of a hydrocarbon is determined by the number of carbon to hydrogen bonds that can be replaced by oxygen to carbon (CO2) and oxygen to hydrogen bonds (H2O), in other words, the amount of energy released is dependent on the oxidation state of the carbons in the hydrocarbon. For marine fuel containing FAME, the FAME molecule itself contains oxygen atoms in the Carbonyl group and Ester bond. The Ester group of FAME has a carbon forming 3 bonds with oxygen atoms, this means esters are more oxidised than hydrocarbons and esters release less energy content when compared to hydrocarbon since higher oxidation reactions are needed for hydrocarbons.

The paragraphs above explain the reasons marine fuel containing FAME typically have lower energy content compared to conventional marine fuels, which consist of predominantly hydrocarbons and the calculated formula for NSE is not applicable to marine fuel containing FAME.

According to ASTM D240 test method, heat of combustion is determined by burning a weighed sample in an oxygen bomb calorimeter under controlled conditions. The heat of combustion is computed from temperature observations before, during, and after combustion, with proper allowance for thermochemical and heat transfer corrections. The average of gross specific energy (GSE) or gross heat of combustion, and NSE or net heat of combustion of MGO, VLSFO, HSFO and Bio-marine Fuels are tabulated in Table 1 below:

Why accurate testing of Energy Content (Net Heat of Combustion) is essential for Bio-Marine Fuels

Note: The average GSE and NSE for each of the fuel types was obtained from at least 50 samples.

Based on Table 1, bio-marine fuel B30 has 8% lower energy content when compared to MGO. The energy content of bio-marine fuel will become lower when the FAME content is higher.

Energy content of marine fuel containing FAME shall be determined by ASTM D240 method and cannot be calculated using the current NSE formula, which is commonly used for the conventional marine fuels.

Note: The full article by CTI-Maritec can be found here

 

Photo credit: Louis Reed from Unsplash
Published: 9 January, 2025

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Bunker Fuel

Revitalising JCT Oil Bank will be key to unlock Sri Lanka potential in bunkering

Dr. Prabath Weerasinghe, a Senior Lecturer at University of Ruhuna, says analysts predict the country can generate about USD 5 billion annually from bunker fuel operations by 2030 if improvements are made to JCT Oil Bank.

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Dr. Prabath Weerasinghe, a Senior Lecturer of the Department of Electrical and Information Engineering Faculty of Engineering at University of Ruhuna, shared that analysts predict the country can generate about USD 5 billion annually from bunker fuel operations by 2030 with a focused investment and improvements to Jaya Container Oil Bank Terminal (JCT Oil Bank):

Sri Lanka, strategically positioned on one of the busiest maritime routes in the world, holds immense potential to become a leading regional bunkering hub. Experts suggest that with targeted infrastructure upgrades and strategic policy initiatives, the country can generate nearly USD 5 billion annually from bunker fuel operations by 2030. The key lies in revitalising the Jaya Container Oil Bank Terminal (JCT Oil Bank) to match regional standards and meet the growing global demand for efficient bunkering services.

The Jaya Container Oil Bank Terminal, once seen as a critical asset for Sri Lanka’s maritime economy, has faced years of neglect, underutilisation, and inadequate capacity expansion. Despite its strategic location adjacent to the busy Port of Colombo, the terminal operates well below its potential. Competitors like Singapore, Fujairah, and Indian ports have surged ahead, offering large-scale fuel storage facilities, efficient refuelling systems, and world-class operational infrastructure.

The lack of consistent investment, outdated technology, and limited storage capacity at JCT Oil Bank has deterred major shipping lines and bunker operators from considering Sri Lanka as their preferred choice for refuelling.

The USD 5 Billion Vision

With global shipping volumes projected to grow steadily, the demand for bunker fuel is expected to rise exponentially. Analysts predict that with focused investment in the JCT Oil Bank Terminal, Sri Lanka could capture a significant share of the Indian Ocean bunkering market, generating approximately USD 5 billion annually by 2030.

Key improvements required to achieve this goal include:

  • Increased Storage Capacity: Expanding storage facilities to accommodate both conventional and sustainable fuels like LNG and biofuels.
  • Enhanced Distribution Networks: Modernising fuel delivery systems to reduce refuelling times and increase efficiency.
  • Policy and Regulatory Clarity: A transparent and investor-friendly policy framework to attract global players.
  • Technological Upgrades: Adoption of digital systems to streamline inventory management and improve transaction transparency.

Regional Competition: The Need for Urgency

Regional competitors like Singapore have set benchmarks in bunker fuel supply, handling nearly 50 million metric tons of bunker fuel annually. Ports in India, UAE, and Malaysia are also scaling up their bunkering capacities with substantial government backing. If Sri Lanka delays infrastructure upgrades, it risks losing market share to these emerging competitors.

Government and Private Sector Collaboration

Achieving this ambitious target requires strong collaboration between the government and private sector stakeholders. Private investment in storage infrastructure, technology integration, and distribution systems will play a crucial role. Simultaneously, the Sri Lanka Ports Authority (SLPA) must ensure that red tape is minimised, and strategic policies are implemented effectively.

The International Maritime Organisation (IMO) has set strict emission targets for the shipping industry. As a result, the demand for clean fuels like LNG, biofuels, and green ammonia is expected to rise significantly. If Sri Lanka can position the JCT Oil Bank Terminal as a hub for sustainable fuel distribution, it will secure a long-term competitive advantage in the global bunkering market.

The Roadmap to 2030

  • Short-term (2024-2026): Immediate expansion of storage capacity and improvement of refuelling facilities.
  • Medium-term (2026-2028): Adoption of advanced technologies and digital systems for seamless operations.
  • Long-term (2028-2030): Integration of sustainable fuel infrastructure and establishment of global partnerships.

Sri Lanka stands at a critical juncture. The Jaya Container Oil Bank Terminal is not just a piece of infrastructure—it represents a multi-billion-dollar economic opportunity. With the right mix of policy direction, strategic investment, and sustainable practices, Sri Lanka can re-establish itself as a leading bunkering hub in the Indian Ocean.

If the government prioritises the revival and expansion of the terminal, the country could unlock an annual revenue stream of USD 5 billion by 2030, boosting foreign exchange reserves, creating employment opportunities, and driving long-term economic stability. The time to act is now—delays will only allow regional competitors to widen the gap further.

 

Photo credit: Chathura Anuradha Subasinghe on Unsplash
Published: 9 January, 2025

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