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Foreship: Energy density and safety aspects of alternative marine fuels must be addressed in future ship designs

‘Methanol-ready’ term has been overstretched to include ships which are far from ready for the alternative marine fuel, Jan-Erik Räsänen, Chief Technology Officer, Foreship tells Manifold Times.

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Foreship: Energy density and safety aspects of alternative marine fuels must be addressed in future ship designs

The increasing use of alternative marine fuels due to IMO 2030/2050 regulations is creating challenges that ship designers still need to overcome, according to Helsinki-based ship design and engineering specialist Foreship.

“’Future proof design’ is one of the key words of the shipping industry these days,” Jan-Erik Räsänen, Chief Technology Officer, Foreship told bunkering publication Manifold Times.

“While clearly still challenging, designing ships for lower emissions was more straightforward in the early days because it involved heavy fuel oil (HFO) and marine gas oil (MGO); their superior energy density and relatively high flash point offer great flexibility when designing ships.

“However, while alternative bunker fuels are a good thing due to their lower emissions, they also come with challenges. Ship designers have to consider the energy density, energy content and, due to their low flash points, these fuels must be accessed and stored in separate tanks.”

Foreship 14 Large format

Challenges of marine engine retrofits to use methanol and LNG

The option of retrofitting vessel engines to use alternative marine fuels such as methanol and liquified natural gas (LNG) also pose their own set of issues, highlights Räsänen.

“Today most shipowners thinking about a retrofit probably consider methanol as their starting point; for ship designers the methanol is a good bunker fuel as it offers flexibility in choosing between different storage tank locations on a vessel,” he explained.

“However, one of challenges for methanol is the need to do more structure-wise when compared to traditional bunker fuels such as HFO and MGO. Designers must strengthen the hull to cope with additional weight from the weight and introduction of cofferdams; containerships will most likely lose cargo space as a result of the conversion.

“Foreship has already done several conversion designs for cruise ships to use methanol, and the conversion can be more straight forward than some might expect, with double bottom tanks and ballast water tanks used to store the bunker fuel. However, doing so comes at a cost - structure-wise.”

Räsänen points out that classification societies also offer initial thoughts on engine retrofit plans to consume methanol. Additionally, engine manufacturers such as Wärtsilä and MAN offer retrofit kits for their own two-stroke engines to simplify the process.

“As such, today we usually ask shipyards to strengthen the hull to accept alternative bunker fuel,  ,”  Räsänen noted, although he expressed reservations on the use of LNG as a future marine fuel. “We are debating heavily on methane slip especially on four-stroke LNG engines,” he said.

‘Methanol-ready’ term overstretched

Moving forward, Räsänen felt the term ‘methanol-ready’ has been over-used, at a time when its definition has not been standardised by class societies.

In general, to secure approval-in-principle (AiP) status as a ‘methanol-ready’, ship owners must agree that a certain number of vessel modifications need to be  carried out so that the ship can consume methanol as a bunker fuel.

However, shipowners can secure the in-principle approval before all of the modifications are carried out, with the ship notated as ‘methanol-ready’ on the basis that it is on the right path.

“This is a departure from the ordinary understanding of what it means for something to be ‘technology-ready’, said Räsänen. “Given what is at stake, it’s essential that these terms aren’t vulnerable to being considered gimmicks.”

Potential risks included ship managers taking a vessel on long term charter on the grounds that it was ‘methanol-ready’ when a full evaluation of its conversion had not been undertaken.

“This AiP has varied between different class societies, and I’d say there certainly needs to be standardisation on what ‘methanol-ready’ notation means – as a matter of priority .”

 

Photo credit: Foreship
Published: 7 May 2024

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Interview

Maersk: Bunkering hubs to witness first steps of shipping’s transition to alternative marine fuel

‘You need close partnership with the many, many different players in the supply chain,’ notes Emma Mazhari, Vice President, Head of Energy Markets, A.P. Moller – Maersk.

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The marine fuels transition will first take place at global bunkering hubs before spreading to other regional ports, forecasts Emma Mazhari, Vice President, Head of Energy Markets, A.P. Moller – Maersk.

Mazhari, also CEO of Maersk Oil Trading, was responding to an enquiry from Manifold Times about the possibility of bunkering volume for alternative marine fuels being moved closer to production sources [e.g. such as methanol bunkering volume to China], affecting bunker sales at current marine refuelling hubs prior to IMO 2030.

“What we've learned is that after ordering the vessel you need to have line of sight of the fuel coming which means you need to get the infrastructure such as barges, tank, storage, bunker, licenses, permits, etc in place,” she said on the sidelines of a naming ceremony for dual-fuel methanol container vessel A.P. Moller on Thursday (28 November).

“You need close partnership with the many, many different players in the supply chain and this takes time.

“For the early years you want to concentrate liquidity to some hubs globally where you can get everything set up, like in Singapore in Asia, for example where you can have the fuel being transported in and consolidated for sale as bunkers to many different players in the market.

“Then further down the line we have to development other bunkering locations globally. We're not going to have the end game from the start. It takes time for this transition.”

Mazhari, meanwhile, highlighted China to be amongst top producers of green methanol for bunkering due to state policies enhancing their production.

“We've signed some large offtake agreements on green methanol with production in China. China has got great potential; a lot of land, cheap renewable electricity, and large amounts of bio feedstock,” she shared.

“They also see that's the way to become more energy independent. There's a lot of scalability potential.”

Even though Maersk has looked at many projects in other parts of the world, the economics of having a commercially viable production source of alternative bunker fuel are still very much dependant on mass balancing, local government policies and infrastructure supporting specific products.

“Different factors are needed to enable this, you need to have permits, sufficient land, access to the port, or even local government subsidies and regulatory support to scale up production. Basically, these all come together to make for a commercially viable project,” explained Mazhari.

“For biodiesel, it's very much tied to the feedstock availability.

“For biomethane, you must depend on a gas grid because without this it’s going to be very, very expensive to truck the gas around.”

Maersk Oil Trading, an accredited bunker supplier at the Port of Singapore, took position as top biodiesel supplier at the port in 2023 by recording volumes close to 250,000 metric tonnes.

Related: Maersk names latest methanol dual-fuel vessel after founder in Singapore
Related: Maersk secures bio-methanol bunker fuel supply from China’s LONGi

 

Photo credit: A.P. Moller – Maersk
Published: 5 December, 2024

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Battery

Yinson GreenTech: Bunker tankers at Singapore port ‘well suited’ for electrification

‘Short operational distances typical of Singapore’s bunker tanker market could accelerate economic viability,’ Jan-Viggo Johansen tells Manifold Times.

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Jan Viggo Johansen OSEA 2024 (Photo credit Yinson GreenTech)

The approximate 200 bunker tankers operating at the world’s largest bunkering port are a prime candidate for electrification, believes the Managing Director of marinEV, a business within Yinson GreenTech, the green technologies unit of Malaysia-listed Yinson Holdings Berhad.

Jan-Viggo Johansen was speaking to Manifold Times on the sidelines of Offshore Energy Week (OSEA) 2024 when he noted Singapore bunker tankers primarily operating over short distances within port waters and nearby shipping lanes, making them promising candidates for electric or hybrid-electric propulsion.

“These vessels spend a significant portion of their time at port, transferring marine fuel to docked or anchored ships, and are not required to undertake long-haul journeys,” he explained.

“This operational profile allows them to leverage charging infrastructure during docked periods or quick turnarounds.

“Electrification is particularly viable for vessels designed for short trips between terminals, shipyards, and anchored ships within Singapore’s waters, presenting a strong opportunity to adopt more sustainable propulsion systems.”

Electrification of bunker tankers at the republic presents both opportunities and challenges, added Johansen.

“One key challenge is the higher upfront capital cost compared to conventional fuel-powered vessels, driven primarily by the expense of battery systems and retrofitting existing fleets. However, the short operational distances typical of Singapore’s bunker tanker market could accelerate economic viability. Operators can gain returns on investment through reduced fuel consumption, lower maintenance costs, and potential access to regulatory incentives,” he said.

“On the opportunity front, electrification enhances the environmental profile of companies within the sector. As the global shipping industry increasingly prioritises sustainability, the ability to operate electric-powered vessels provides a competitive advantage. Bunker suppliers and operators can leverage this shift to meet the growing demand for green shipping solutions while aligning with international sustainability goals.”

Johansen, meanwhile, shared Yinson GreenTech's marinEV division has been collaborating with the Maritime and Port Authority of Singapore (MPA) to advance high-power DC charging solutions, including the Megawatt Charging System (MCS), within Singapore's ports.

MCS technology is designed to deliver large amounts of energy in significantly shorter durations, catering to the charging needs of larger vessels such as ferries and harbour tugs which rely on substantial battery capacity and require rapid turnarounds to ensure operational efficiency and flexibility.

“The strong support from MPA, enthusiasm from industry leaders in adopting greener practices in their operations and the substantial commercial and environmental benefits have positively charged the growth of electrified solutions in the marine space over the past few years,” stated Johansen.

“We are proud to be part of an innovative maritime community working towards cleaner port waters through vessel electrification and developing MCS charging infrastructure to support the growth of electric vessels in the industry. “

Manifold Times earlier reported Yinson GreenTech launching Singapore’s first fully electric hydrofoil vessel, the Hydroglyder, at OSEA 2024.

Related: Yinson GreenTech reveals Singapore’s first fully electric hydrofoil vessel
RelatedGoal Zero Consortium launches Singapore’s first electric cargo vessel Hydromover

 

Photo credit: Yinson GreenTech
Published: 26 November 2024

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Biofuel

ENGINE: Knowledge gaps are hidden barriers to biofuel term contracts, says FincoEnergies

Lack of knowledge on pricing, quality and product availability for biofuels is leading to hesitation in signing term agreements, FincoEnergies told ENGINE.

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Lack of knowledge on pricing, quality and product availability for biofuels is leading to hesitation in signing term agreements, FincoEnergies told ENGINE.  

When it comes to biofuels, a lack of knowledge and visibility on biofuel prices is one of the main reasons shipping companies are hesitant to close term contracts today, Johannes Schürmann, commercial director of FincoEnergies’ marine division said.

"We have pitched to quite a few customers about closing a term contract, maybe a 1- or 2-year contract based on one biofuel pricing index, but we haven’t succeeded," Schürmann explained. "The main reason is that internally, they need board approval to lock in certain price levels. They prefer using a floating price with a fossil index, like ICE Gasoil plus a fixed premium, to calculate their exact financial exposure."

While some globally accepted pricing indexes for biofuels exist, shipping companies often lack access to these essential price points. And without reliable pricing information, these companies struggle to make informed decisions, making them reluctant to engage in long-term commitments. 

“The main reason is they have no clue [about] the pricing indexes in biofuel,” Schürmann said.

To address this, Schürmann argued for fixed-term contracts, which lock in prices over an agreed period, reducing exposure to spot market fluctuations and easing logistical challenges related to adjusting barge or cargo deliveries.

Another challenge is uncertainty about availability of biofuels, particularly outside major bunkering hubs like ARA and Singapore. Suppliers in more and more ports have launched biofuel bunker operations, but there is a perception among shipowners that availability is still lacking and that opting for biofuels to comply with regulations like FuelEU Maritime in the EU can reduce their flexibility if they call at ports without availability.

Term contracts can help mitigate these risks by sending firm demand signals to suppliers, who can then plan future investments and establish logistics to meet increased bunker demand, according to Schürmann.

The sulphur factor for biofuels  

Different grades of biofuels can be used in the road, shipping or power generation industries. However, quality differences among these grades can significantly impact pricing in the shipping sector, Schürmann emphasised. This variability can make it difficult for buyers to predict costs accurately, which in turn can influence their decision to sign term contracts.

Some biofuels can be used interchangeably as road or bunker fuels. Others have higher sulphur content, which makes them unsuitable for road while still acceptable for shipping. 

For instance, a product with 20 ppm sulphur content cannot be used by vehicles because it exceeds the road standard cap of 10 ppm. But it can be used in shipping since it is below the International Maritime Organisation's (IMO) 0.10% - or 1,000 ppm - cap. This product may be sold at a discount because it is limited to bunkering, he explained.  

Biomethanol's quality and pricing labyrinth  

The pricing situation becomes even more challenging for new alternative fuels like low-carbon methanol or ammonia, Schürmann argued.  

For instance, he said, green ammonia is not yet widely available, making it difficult to establish prices for it. Methanol, and especially biomethanol, currently lacks a standardised pricing mechanism for shipping. Some companies provide individual quotes, but market prices vary widely across suppliers. This can complicate decision-making for buyers considering these emerging bunker fuels. 

Discrepancy in quality and regulations can add another layer of complexity to the pricing structures for fuels like biomethanol. 

Biomethanol quality, especially for prototype batches, can differ significantly. Specifications of methanol supplied for shipping are gradually aligning with the International Methanol Producers and Consumers Association (IMPCA) Reference Specifications.  

The IMPCA reference specs are a set of standards that define fuel quality of methanol by testing for elements like chloride, sulphur, hydrocarbons, acidity and volatility.

These specifications help ensure consistency within methanol grades. But there remains some uncertainty about the range of methanol grades that engine manufacturers like MAN Energy Solutions and Wärtsilä can accept. Engine manufacturers are still determining which specifications to allow and finalise, which complicates methanol's pricing and market readiness.  

As methanol begins aligning with chemical industry specifications, any quality variations or unmet specifications could create price disparities depending on which industries can utilise the product, he added. 

Given this uncertainty, shipping companies might feel it is more prudent to adopt a wait-and-see approach, preferring to engage in spot or very short-term deals like quarterly agreements, rather than committing to multiple-year contracts. 

Addressing the biomethanol demand drought 

FincoEnergies started offering truck-to-ship biomethanol deliveries in the Port of Amsterdam last year. But demand remains low.

“We have had biomethanol in stock for over a year; we have a truck ready to deliver, and we have the parts ready to deliver, but we see that demand for biomethanol is very, very low,” Schürmann said. 

The company is still betting on this fossil fuel alternative because it expects demand to pick up in the near-term.

"Whilst current demand is developing, the company maintains its commitment to biomethanol, supported by industry movements such as Maersk's recent long-term methanol sourcing agreement," he said.

There are now 43 methanol-capable vessels in operation globally and another 342 vessels are on order for deliveries towards 2033, according to classification society DNV's database.

“So yeah, we need to invest in that [fuel],” Schürmann said.  

To offset financial risks, he thinks that fuel suppliers should strike the right balance between spot deliveries and term contracts.  

"There will be shipping companies that close contracts; you only need to find the right ones, and you need to set up a partnership approach.”  

By Konica Bhatt

 

Photo credit: FincoEnergies
Source: ENGINE
Published: 18 November, 2024

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