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North P&I: Call for clarity on the enforcement of IMO’s sulphur cap

North has dealt with numerous bunker fuel claims and disputes – but nothing has kept the Club busier than reports of potential marginal non-compliance.

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While the IMO 0.50% sulphur cap on marine fuels has been successful from a safety perspective, complying with the regulation has proved a headache for many shipowners. North P&I Club Loss Prevention Executive Alvin Forster calls for clarity and consistency on how the cap is enforced.

The International Maritime Organization’s cap on fuel sulphur content was met with some predictions of vessels suffering loss of electrical power or losing propulsion in busy shipping lanes. Thankfully, widespread problems never materialised, and the industry came through the transition period largely unscathed.

However, concerns over the poor stability characteristics of some of the new very-low-sulphur fuel oils and the incompatibility between stems were realised, while operational issues that were perhaps not as well foreseen, such as engine liner wear, also arose.

North has dealt with numerous claims and disputes related to these issues – but nothing has kept the Club busier than reports of potential marginal non-compliance.

The problem scenario

Imagine the following scenario: the vessel requests the delivery of compliant bunkers, and the party ordering the bunkers – the owner or time charterer – specifies compliant fuel to be supplied to the vessel.

Upon completion of bunkering, the supplier issues a bunker delivery note (BDN) declaring the fuel to be compliant (0.50% sulphur or less). The receiving vessel then sends a sample drawn during bunkering to an independent laboratory where it is tested against ISO 8217-listed parameters for commercial purposes.

Days later, the test result returns a sulphur content between 0.51% and 0.53%, indicating non-compliance with the limit specified in MARPOL Annex VI.

What happens next? Are the bunkers off-specification, non-compliant or both? Can the fuel be used? Who should be notified? Will the vessel be targeted by the authorities and what action will they take? Should it be de-bunkered?

This is where confusion reigns, leading to commercial disputes and, in some cases, de-bunkering.

Are the bunkers off-spec?

According to existing industry guidance issued by organisations such as IBIA and CIMAC, if the receiving vessel’s own sample returns a result of 0.53% or less, a claim cannot be brought against the supplier. The rationale behind this cut-off point is ‘single-test reproducibility’, which describes the allowance applied to a lab test result that recognises the limitations in accuracy of a single test.

If the vessel’s sample test result is over 0.53%, a claim against the supplier may be initiated. The supplier’s retained sample is usually contractually binding and therefore tested. If this test returns a result of 0.51% or more (single-test reproducibility is not applied at this stage), it is deemed off-spec for commercial purposes.

However, these are only guidelines, and a supplier may have different terms in their bunker contract.

Are the bunkers non-compliant?

If the receiving vessel’s own sample returns a result above 0.50%, it does not automatically mean that the bunkers are non-compliant with MARPOL. Non-compliance can only be confirmed by testing the MARPOL-delivered sample, the MARPOL in-use sample or the MARPOL onboard sample.

Commercial samples – such as the vessel’s own sample – should not be considered definitive evidence of non-compliance. However, few administrations have confirmed this explicitly, and experience suggests that some port state control functions are taking a contrary view.

Port state control officers in some countries are not applying the single-test reproducibility tolerance to in-use samples during their inspections, as it is not mandatory for them to do so, but the IMO is promoting its early adoption. Again, the lack of a consistent approach by port states around the world causes confusion for calling vessels.

Who should be notified?

In general, shipowners have been advised to follow the notification process in MEPC.321(74) 2019 GUIDELINES FOR PORT STATE CONTROL UNDER MARPOL ANNEX VI:

“…  if the BDN shows compliant fuel, but the master has independent test results of the fuel oil sample taken by the ship during the bunkering which indicates non-compliance, the master may have documented that through a Notification to the ship’s flag Administration with copies to the competent authority of the relevant port of destination, the Administration under whose jurisdiction the bunker deliverer is located and to the bunker deliverer.”

However, as the document’s title suggests, this is the IMO guidance for port state control. There is no published guidance to shipowners, and the statement “the master may…” implies that the notification process is voluntary and there is no obligation to notify the referenced parties.

There is also uncertainty as to what is meant by “indicates non-compliance”. Is the IMO’s intention that the notification process applies when the ship’s sample test result exceeds 0.50%, or is it 0.53% to allow for single-test reproducibility?

Further clarification on the notification process is needed.

Will the vessel be targeted by PSC?

It is important not to disincentivise the reporting of potentially non-compliant fuel, as the IMO GISIS module – which allows flag states to report on behalf of shipowners – relies on these reports to identify suppliers that provide non-compliant fuel.

It stands to reason that if PSC targets a vessel for inspection following the submission of a voluntary notification, it is likely to disincentivise reporting.

How port state authorities around the world are acting upon these notifications is not yet known; and as Covid-19 influences their current inspection protocols, we may not be seeing an accurate picture of how this will be dealt with in a post-pandemic world.

However, the European Maritime Safety Agency Inspection Guidance states clearly that EU ports will target a vessel for inspection if the owner submits a voluntary notification of potential non-compliance.

A call for clarity and consistency

Marginally off-spec bunkers are causing lengthy disputes and, in some cases, de-bunkering. Considering the carbon footprint of the de-bunkering process, these developments could be considered as contradicting established industry environmental goals.

Shipowners need to feel sure they understand the rules and confident of their consistent enforcement worldwide.

We have a wealth of information on the IMO 2020 sulphur cap including articles, news and resources, available at: https://www.nepia.com/topics/2020-vision/

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Photo credit: North P&I
Published: 22 June, 2021

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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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