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Alternative Fuels

Whitepaper: Renewable diesel blends are the ‘immediate solution’ worldwide for maritime sector

Better and safer starting point could be a blend of VLSFO with different percentages of HVO that meet ISO 8217:2017 specs rather than using pure HVO, suggests Blend Tiger LLC study.

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The following is an extract and a continuation of yesterday’s coverage on a recently published whitepaper by Eliseo Curcio and Michele Miceli from American fuels blending consulting company Blend Tiger LLC on “Bio-Bunkers: A today alternative to energy transition”, that was supplied to Manifold Times.

Biodiesel blends with VLSFO

Many large companies are using pure HVO as a main fuel for their ships in lieu of VLSFO/HVO blends without all the needed research on the possible damage of expensive equipment. While pure HVO is definitely a possible solution for the future, I do not believe it’s the best alternative at this time. A better and safer starting point could be a blend of VLSFO with different percentages of HVO. When HVO is blended with other fossil-based blend components to make VLSFO is important that all the ISO:8217-2017 specs are met. It is also important that the order of blend is respected to avoid the final product to be incompatible and unstable.

We know that blending is the arithmetic of properties and prices.  Currently the price of the VSLFO is around $865/ton (Ship&Bunker April 2022), and the price of HVO is around $2000/ton (Argus averaged price April 2022). The HVO price is highly dependent on the feedstock used for its production.

Following we can see a price chart comparing the price of the final blend (VLSFO+HVO) for different mass percentages of HVO:

Whitepaper: Renewable diesel blends are the ‘immediate solution’ worldwide for maritime sector

From the above figure, we can deduct that if high amounts of HVO are used, the final blend price would be higher than using pure VLSFO. Of course, blends with HVO will be healthier, but not very economical. Other aspect to keep in mind is the stability of the blend. Blending HVO (High paraffinic content) in high quantities can decrease the aromaticity of the final blend, producing sludge; it’s absolutely important to analyze the HVO properties with reputable COA (certificate of analysis) before purchasing it. It is also mandatory that pre-blends are checked in the lab or through models to avoid surprises in the middle of the ocean. For those reasons when we make a blend, prices and properties must be counted simultaneously.

We see HVO today as a drop-in fuel choice to be blended on top of a VLSFO with an aromaticity equal or greater than 50 vol% to avoid instability. 

We would advise companies to use HVO in combination with residues such as VTB and ATB in a percentage between 10-40 wt%, in combination with a good dose of LCO and or slurry to maintain the aromaticity and avoid instability.

Possible blends with 10 or 20 wt% of HVO are shown on the following tables:

Whitepaper: Renewable diesel blends are the ‘immediate solution’ worldwide for maritime sector

As the biofuel markets grows and there are unclear regulations controlling it, we hope that ISO8217-2017 gets some modifications taking into account renewable biofuels in a better way.

Related: Bio-bunkers are the immediate alternatives to reduce gas emissions, says study

Photo credit: Blend Tiger LLC
Published: 31 May, 2022

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LNG Bunkering

PIL’s LNG dual-fuel boxship “Kota Elok” arrives in Singapore on maiden call

As the first of 13 new 13,000 TEU vessels joining its fleet, Kota Elok is equipped to operate on LNG and low-sulphur fuel oil that helps reduce our greenhouse gas emissions.

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PIL's LNG dual-fuel boxship “Kota Elok” arrives in Singapore on maiden call

Singapore-based Pacific International Lines Pte Ltd on Monday (20 July) said its first 13,000 TEU LNG dual-fuel container vessel, Kota Elok, recently made her maiden call to Singapore on 15 July.

As the first of 13 new 13,000 TEU vessels joining its fleet, Kota Elok is equipped to operate on liquefied natural gas (LNG) and low-sulphur fuel oil that helps reduce our greenhouse gas emissions. 

The vessel also incorporated energy-saving features and digital technologies to reduce fuel consumption and enhance operational performance, as well as a bow windshield to improve aerodynamics, contributing to improved fuel efficiency and lower emissions over the course of long-haul voyages.

“Following Singapore, Kota Elok will continue her voyage on our East Coast Service 1 (ES1) route to South America, calling at ports in Brazil, Uruguay, and Argentina before returning to Asia,” the company said in a social media post. 

Kota Elok also became PIL’s first vessel to receive Lloyd’s Register certification for compliance with the IACS UR E26 and UR E27 cyber security requirements.

Developed by the International Association of Classification Societies (IACS), UR E26 and UR E27 are mandatory cyber resilience requirements for newbuild vessels contracted from 1 July 2024. 

 

Photo credit: Pacific International Lines
Published: 21 July, 2026

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LNG Bunkering

CIMC SOE secures order for 12,000-cbm LNG bunkering vessel from Sinopec Clean Energy

Once operational, the vessel is expected to strengthen Sinopec’s domestic coastal LNG bunkering network and help address gaps in China’s alternative fuel bunkering infrastructure.

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CIMC SOE secures order for 12,000-cbm LNG bunkering vessel from Sinopec Clean Energy

China’s Nantong CIMC Sinopacific Offshore & Engineering Co., Ltd. (CIMC SOE) recently signed a contract with Sinopec (Beijing) Clean Energy Co., Ltd. to build a 12,000-cubic metre (m3) LNG bunkering vessel, according to Chinese maritime media.

The vessel is scheduled for delivery in 2028 and will support Sinopec’s efforts to expand its presence in the marine clean energy sector.

Once operational, the vessel is expected to strengthen Sinopec’s domestic coastal LNG bunkering network and help address gaps in China’s LNG bunkering infrastructure.

With this signing , CIMC Pacific Offshore Engineering’s LNG bunkering vessel orderbook is further strengthened, maintaining its leading position in the global market for small and medium-sized LNG bunkering vessels.

The contract also marked another milestone for CIMC SOE, which has seen a sharp increase in orders and business performance this year amid a surge in domestic LNG vessel demand.

 

Photo credit: Nantong CIMC Sinopacific Offshore & Engineering
Published: 21 July, 2026

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Nuclear

ABS awards AiP to Korean institute for SMR-powered container ship concept design

KRISO says AiP recognises the technical feasibility and safety of its concept design, marking an important milestone toward the development of next-generation nuclear-powered commercial ships.

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ABS awards AiP to Korean institute for SMR-powered container ship concept design

Korea Research Institute of Ships & Ocean Engineering (KRISO) on Thursday (16 July) received Approval in Principle (AiP) from the American Bureau of Shipping (ABS) for its concept design of a 15,000 TEU Small Modular Reactor (SMR)-powered container ship utilising Molten Salt Reactor (MSR) technology.

KRISO said the AiP recognises the technical feasibility and safety of its concept design, marking an important milestone toward the development of next-generation nuclear-powered commercial ships.

“This achievement demonstrates international recognition of KRISO’s technological capabilities in the rapidly evolving field of nuclear-powered shipping, supporting the transition toward low-carbon maritime transport,” it said. 

Building on this milestone, KRISO will continue advancing basic and detailed ship design, paving the way for future demonstration and commercialisation of SMR-powered vessels. 

Through continued R&D and international collaboration, KRISO remains committed to strengthening next-generation maritime technologies and contributing to the safe deployment of nuclear propulsion in the maritime industry.

 

Photo credit: Korea Research Institute of Ships & Ocean Engineering
Published: 21 July, 2026

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