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DNV: IMO to review circular on bunker tankers carrying biofuel blends up to B30

IMO PPR12 finalised an interim circular allowing conventional bunker ships certified as oil tankers under MARPOL Annex I to carry biofuel blends containing up to 30% biofuel; circular is subject to approval by MEPC 83 in April.

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Classification society DNV on Monday (3 February) shared a statutory news article that provides a summary of the 12th session of the IMO’s Sub-Committee on Pollution Prevention and Response (PPR 12).

The following is an excerpt from the news update relating to bunker fuels:

The 12th session of the IMO’s Sub-Committee on Pollution Prevention and Response (PPR 12) was held in London from 27 to 31 January 2025. PPR 12 finalized guidance on in-water cleaning of ships’ biofouling and guidelines on certification of Selective Catalytic Reduction systems. A wide range of other topics was on the agenda, including cargo tank cleaning procedures, carriage of biofuel blends, black carbon, discharge water from Exhaust Gas Cleaning Systems, sewage treatment and marine plastic litter.

Meeting highlights

  • Finalized a circular on guidance on in-water cleaning of ships’ biofouling
  • Revised guidelines on certification of Selective Catalytic Reduction (SCR) systems
  • Agreed on an interim circular allowing bunker ships certified as oil tankers to carry biofuel blends containing up to 30% biofuel
  • Discussed amendments to MARPOL Annex II on cargo tank stripping, tank washing operations, and prewash procedures
  • Continued the revision of MARPOL Annex IV on sewage treatment
  • Reviewed the Action Plan to address marine plastic litter from ships

Safety and pollution hazards of chemicals and preparation of amendments to the IBC Code

Carriage of biofuel blends on bunker ships

Currently, oil tankers are permitted to carry biofuel blends containing up to 25% biofuel, while blends exceeding this limit are restricted to transport on chemical tankers. PPR finalised an interim circular allowing conventional bunker ships certified as oil tankers under MARPOL Annex I to carry biofuel blends containing up to 30% biofuel. The circular is subject to approval by MEPC 83 in April. 

Prewash requirements for FAME  

Due to the physical properties of Fatty Acid Methyl Ester (FAME) and several pollution incidents in the North Sea resulting from tank cleaning after unloading of FAME, PPR 12 considered a proposal to add operational requirement 16.2.7 to the IBC Code entry for FAME. This would mandate a prewash after unloading FAME. The geographical area of concern will be as defined by Regulation 13.9 in MARPOL Annex II, extending from Gibraltar in the south, along the Norwegian coast, including the Baltic Sea, as well as the UK and Ireland. The ESPH Technical Group, reporting back to PPR 13 in 2026, was tasked with further consideration of this proposal. 

Air pollution

Black carbon (BC)

PPR 12 reviewed the “polar fuels” concept based on five key characteristics for discussion: density, viscosity, carbon residue content, cetane index or number, and pour point. However, there was no consensus on recommending distillate fuels as “polar fuels”. ISO provided insights on defining a polar fuel standard and the impact of a proposed pour point requirement, concluding that a maximum 0°C pour point would have minimal global impact.

PPR 12 agreed to further work on the “polar fuels” concept at PPR 13, supported by scientific studies and BC measurement campaigns.

Discharge water from Exhaust Gas Cleaning Systems (EGCS)

PPR 12 discussed developing possible regulatory provisions on restrictions of discharge water from EGCS but noted that a global ban was outside the scope its work.

PPR 12 reviewed the terms of reference for the GESAMP Task Team on EGCS, with the aim of developing a methodology for emission factors to ensure a uniform evaluation of regional restriction areas. The draft terms were forwarded to MEPC 83 for approval, with an extension of the target completion year to 2026.

Review of the IBTS guidelines and amendments to the IOPP certificate and Oil Record Book

PPR 12 considered two proposals to amend MARPOL Annex I, aiming to introduce requirements that would recognize forced evaporation of oily bilge water as an acceptable disposal method. However, due to mixed support for the proposals and time constraints, this agenda item was deferred to PPR 13.

Note: The full statutory news article on PPR 12 by DNV can be found here.

 

Photo credit: CHUTTERSNAP on Unsplash
Published: 6 February, 2025

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Alternative Fuels

Yang Ming orders six LNG dual-fuel, ammonia-ready containerships from Hanwha Ocean

Each of the six new vessels will have a capacity of up to 13,650 TEU and feature LNG dual-fuel propulsion and Ammonia Fuel Ready specifications.

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Yang Ming orders six LNG dual-fuel, ammonia-ready containerships from Hanwha Ocean

Taiwanese shipping firm Yang Ming Marine Transport Corporation (Yang Ming) and South Korean shipbuilder Hanwha Ocean on Wednesday (2 September) signed a shipbuilding contract for six 13,000 TEU class LNG dual-fuel container vessels. 

The contract was signed by Dr. Chuck Tsai, Chairman of Yang Ming, and Mr. Charles Kim, CEO of Hanwha Ocean. The vessels are scheduled for delivery between 2028 and 2029. 

They will complement Yang Ming’s existing fleet of 10,000+ TEU vessels and serve as key vessels on East-West services, with deployment flexibility across trade lanes connecting Asia with the East and West Coasts of North America, South America, and the Mediterranean. 

Each of the six new vessels will have a capacity of up to 13,650 TEU and feature LNG dual-fuel propulsion and Ammonia Fuel Ready specifications.

“As Yang Ming transitions toward net-zero emissions, LNG provides a relatively mature and economically viable alternative fuel solution, capable of reducing greenhouse gas emissions by approximately 20%,” the company said. 

“At the same time, ammonia can serve as a carbon-free fuel by utilising converted LNG storage facilities, while offering relatively lower conversion costs and comparatively well-developed supply chains and infrastructure. The Ammonia Fuel Ready design will therefore provide Yang Ming with greater flexibility in responding to increasingly stringent international regulations on greenhouse gas emissions.”

In addition, the vessels will be equipped with Type B LNG fuel tanks with a design pressure of 1.0 bar to enhance the safety and efficiency of LNG operations, together with a range of energy-saving technologies, including Wind Shields, Rudder Bulbs, Pre-Swirl Stators, and Shore Power Systems. Smart ship technologies and cybersecurity protection features will also be incorporated to enhance operational efficiency, safety, and reliability while effectively reducing fuel consumption and greenhouse gas emissions.

Deliveries under Yang Ming’s next-generation fleet optimization plan commenced earlier this year. By 2030, a total of 24 new vessels are expected to enter service. 

This includes 18 LNG dual-fuel vessels—comprising five 15,500 TEU, seven 16,000 TEU, and the six 13,000 TEU vessels under this contract—alongside six 8,000 TEU methanol dual-fuel-ready ships. 

 

Photo credit: Yang Ming Marine Transport
Published: 4 September, 2026

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Alternative Fuels

LR, China’s MARIC unveil tanker concept ready for three future bunker fuels

Both secured AiP for a new 114,000 DWT product and crude oil tanker designed to accommodate future conversion to LNG, methanol or ammonia.

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LR, China’s MARIC unveil tanker concept ready for three future bunker fuels

Lloyd’s Register (LR) and the Marine Design and Research Institute of China (MARIC) on Thursday (3 September) have secured Approval in Principle (AiP) for a new 114,000 DWT product and crude oil tanker designed to accommodate future conversion to LNG, methanol or ammonia.

Announced at SMM 2026, the concept addresses one of the biggest investment challenges facing shipping today: the need to develop vessels and capabilities that can support a range of alternative fuel options and pathways as technologies, infrastructure and regulations evolve.

While LNG is already a mature fuel pathway, methanol and ammonia remain at an earlier stage of development, with questions around global fuel availability, infrastructure development, economics and long-term adoption.

The 114,000 DWT tanker concept has been designed as a product and crude oil carrier that can accommodate future conversion to LNG, methanol or ammonia as technologies, regulations and fuel supply chains mature. By incorporating conversion readiness at the design stage, the concept aims to reduce future retrofit complexity and provide owners with greater confidence when planning long-term fleet investments.

The design concept was reviewed against LR’s July 2026 class rules and regulations, including requirements relating to ships using gases and other low-flashpoint fuels, alongside relevant IACS Common Structural Rules for oil tankers. Final classification and statutory approval remain subject to full compliance with all applicable rules and regulations.

Theo Kourmpelis, Global Business Director for Tankers, Lloyd’s Register, said: “Shipowners are being asked to make major investment decisions today despite continued uncertainty around which fuels will dominate in the decades ahead. Alternative fuel solutions each offer potential pathways to compliance, but fuel infrastructure, regulation and economics continue to evolve at different speeds around the world.

“Designs that preserve flexibility will be critical in helping owners manage risk while preparing for multiple future scenarios.”

Si Nan, Marine & Offshore Marketing Department Vice Director, MARIC, said: “As the industry explores different decarbonisation pathways, shipowners need vessel designs that can adapt alongside technological and regulatory developments. This concept was developed specifically to provide greater fuel flexibility and long-term resilience, allowing owners to respond to changing market requirements without being locked into a single fuel strategy.

“Receiving Approval in Principle from Lloyd’s Register is an important milestone that validates the design concept and supports its future development.”

 

Photo credit: Lloyd’s Register
Published: 4 September, 2026

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Alternative Fuels

DNV: Alternative-fuelled vessel orders hit highest monthly level since October 2024

LNG-fuelled vessels accounted for the vast majority of August activity while the strong summer performance marked a significant acceleration in ordering activity after a relatively slow start to the year.

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DNV: Alternative-fuelled vessel orders hit highest monthly level since October 2024

Latest data from classification society DNV’s Alternative Fuels Insight (AFI) platform alternative-fuelled vessel ordering was strong in August, with 52 new vessels added to the platform.

This is the highest monthly total since October 2024 and follows another active month in July, when 47 vessels were added to the database.

LNG-fuelled vessels accounted for the vast majority of August activity, with 46 orders recorded. The container segment led the way with 30 orders, while the car carrier segment contributed a further 12 LNG-fuelled vessels. In addition, four ethanol-fuelled bulk carriers and two hydrogen-powered bulk carriers were added during the month, as well as one LNG bunker vessel.

The strong summer performance marked a significant acceleration in ordering activity after a relatively slow start to the year. In total, 242 alternative-fuelled vessel orders have been placed in the first eight months of 2026, representing a 27% increase compared with the same period in 2025.

LNG remains the dominant fuel choice, accounting for 63% of all alternative-fuelled vessel orders registered so far this year. Container vessels represent the largest share of these LNG orders (59%), followed by car carriers (30%).

Jason Stefanatos, Global Decarbonization Director at DNV Maritime, said: “The past two months have been particularly strong for alternative-fuelled vessel ordering, with August recording the highest monthly total we’ve seen since October 2024. This has helped lift year-to-date orders to a level well above the same period last year.

“LNG remains the leading fuel choice, driven largely by activity in the container and car carrier segments. These sectors have been among the earliest adopters of alternative fuels, supported by predictable liner operations and increasing demand from cargo owners to reduce emissions across supply chains. 

“For many owners, LNG offers a combination of emissions reductions, fuel availability and future flexibility while the longer-term fuel landscape continues to evolve. 

“At the same time, the latest figures include orders for ethanol- and hydrogen-fuelled vessels, highlighting that owners continue to explore a range of decarbonization pathways. Different segments are making different fuel choices, but the overall level of activity demonstrates continued investment in lower-emission shipping.”

Screenshot 2026 09 04 at 12.29.26 PM Screenshot 2026 09 04 at 12.29.36 PM

 

Photo credit: DNV
Published: 4 September, 2026

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