Alternative Fuels

DNV white paper tackles decarbonisation, alternative bunker fuels for naval vessels

New white paper concludes developing “green” drop-in fuels alone may not be sufficient in determining feasibility of low- or zero-carbon fuels for the naval segment.

Published

4 years ago

April 25, 2022

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A white paper published by classification society DNV on Wednesday (20 April) has concluded that developing “green” drop-in fuels alone may not be enough for the naval segment as there are other practical considerations such as logistics and fuel availability in determining the feasibility of different low- or zero-carbon fuels.

The white paper titled “Alternative Fuels for Naval Vessels” explores how naval vessels can minimise their environmental impact without increasing their operational vulnerability.

Navies around the world are becoming increasingly aware that they will also be affected by the decarbonisation challenge facing the maritime world.

However, to fulfil their defensive purpose, naval vessels must also meet specific requirements which add complexity to their search for the most sustainable fuel types, says DNV.

Despite navies not being subject to the same scrutiny as the commercial shipping industry, they are nevertheless coming under growing societal pressure to reduce their environmental footprint.

Furthermore, they will need to face potential global challenges affecting logistics and, therefore, fuel availability.

This has implications for the design of future naval vessels and developing “green” drop-in fuels alone may not be sufficient.

While the scientific and practical advancements made in developing and testing alternative fuels and propulsion technologies for private sector shipping are of great value to the military, combatant naval vessels must be able to operate under direct threat, at high speeds, and for extended periods of time without refuelling.

“Alternative fuels are the most effective measure to fully decarbonise in the future, but practical considerations such as logistics, fuel availability, fuel change flexibility and design impacts are critical factors in determining the feasibility of the different low- or zero-carbon fuels for the naval segment,” said Christian von Oldershausen, DNV Maritime Segment Director for Navy.

“The new paper evaluates different fuel options to provide a solid decision support for newbuilds and vessels in operation.”

“This white paper provides an excellent starting point for us to work together to protect our environment and at the same time ensure the operational readiness of our navies,” said Jan Christian Kaack, Vice Admiral, Chief German Navy, Commander Fleet and Supporting Forces.

The white paper is based on a wide range of public-domain information sources as well as a survey conducted among 130 stakeholders from 12 countries to ascertain current trends and expectations.

It summarises recent technology developments; discusses current and emerging fuel choices including their pros and cons, as well as their technical and military implications; looks at other carbon abatement and efficiency enhancing measures; and analyses the current navel fleets and their respective uptake of alternative fuels.

The authors differentiate between the needs of combatant vessels and those of auxiliary, non-combatant ships, which usually operate closer to shore and travel shorter distances. Special attention is given to the unique operating patterns of submarines and the resulting requirements.

The document sees significant potential – especially for non-combatant ships – to adopt alternative fuels which are available today and increasingly used by the merchant fleet. In the survey conducted for this white paper, more than 83% of respondents saw biofuels as a more realistic option for naval ships than ammonia, methanol, hydrocarbons or other power sources.

The paper also explores the advantages and disadvantages of nuclear propulsion, which has been used by the United States Navy for decades because of the speed and endurance it gives to combatant vessels.

The full copy of the whitepaper can be downloaded here.

Photo credit: DNV
Published: 25 April, 2022

Bunker Fuel

Singapore: Bunker fuel sales down by 3.8% on year in July 2026

4.73 million mt of various marine fuel grades were delivered at the world’s largest bunkering port in July, up from 4.92 million mt recorded during the similar month in 2025.

Published

1 day ago

August 17, 2026

Admin

Singapore: Bunker fuel sales down by 3.8% on year in July 2026

Sales of marine fuel at Singapore port fell by 3.8% on year in July 2026, according to data from the Maritime and Port Authority of Singapore (MPA).

In total, 4.73 million metric tonnes (mt) (exact 4,731,900 mt) of various marine fuel grades were delivered at the world’s largest bunkering port in July, up from 4.92 million mt (4,918,000 mt) recorded during the similar month in 2025.

Deliveries of marine fuel oil, low sulphur fuel oil, ultra low sulphur fuel oil, marine gas oil and marine diesel oil in July (against on year) recorded respectively 1.95 million mt (zero from 1.95 million mt), 2.33 million mt (-2.1% from 2.38 million mt), 1,600 mt (+100% from zero), 700 mt (-82% from 3,900 mt) and zero (from zero).

Singapore: Bunker fuel sales down by 3.8% on year in July 2026

Bio-blended variants of marine fuel oil, low sulphur fuel oil, ultra low sulphur fuel oil, marine gas oil and marine diesel oil in July, (against on year) recorded respectively 8,200 mt (-83.7% from 50,300 mt), 29,900 mt (-62.9% from 80,500 mt), zero (from zero), zero (from zero) and zero (from zero). B100 biofuel bunkers, introduced in February last year, recorded 1,400 mt (-46.2% from 2,600 mt).

LNG and methanol sales were 58,700 mt (+41.4% from 41,500 mt) and zero (from zero) respectively. There were no recorded sales of ammonia for the month and so far since 2025.

Photo credit: Maritime and Port Authority of Singapore
Published: 17 August, 2026

Alternative Fuels

Ammonia, methanol bunkering workshops to be held at 13th Singapore Safety@Sea Week

Three workshops on ammonia bunkering, methanol bunkering, and crew safety awareness are part of MPA’s Safety@Sea Week, which will be held from 17 to 21 August.

Published

1 day ago

August 17, 2026

Admin

The Maritime and Port Authority of Singapore (MPA), together with industry partners, on Monday (17 August) launched several new initiatives to enhance maritime safety.

Announced at the opening of the 13th Singapore Safety@Sea Week, these initiatives will support shared learning, strengthen operational capabilities, and prepare the industry for the safe adoption of new technologies.

Organised by MPA from 17 to 21 August, this year’s Safety@Sea Week is themed “All Hands on Deck – Safety First!”. About 1,500 participants from across the maritime community are expected to take part in 18 events organised by MPA and its partners.

These include the Safety@Sea Symposium, featuring seven speakers across two panel sessions, and three workshops on ammonia bunkering, methanol bunkering, and crew safety awareness.

Speaking at the opening, Mr Murali Pillai, Senior Minister of State for Law and Transport, highlighted three priorities for strengthening maritime safety: harnessing technology responsibly, preparing early for emerging risks, and keeping people at the centre of safety. He also underscored the importance of strong partnerships across the maritime community in building a strong safety culture.

At the opening of Safety@Sea Week, the National Maritime Safety at Sea Council and the Singapore Shipping Association launched the Singapore Near Miss Reporting System to encourage the reporting and sharing of lessons from near miss incidents.

Modelled on the internationally recognised Confidential Human Factors Incident Reporting Programme (CHIRP), the system provides sea space users with a confidential online channel to report near misses. CHIRP will independently receive the submissions and provide anonymised information to the Council, which will distil key safety lessons for sharing with the wider maritime community.

Note: More information about the event can be found here.

Photo credit: Peter Nguyen on Unsplash
Published: 17 August, 2026

Alternative Fuels

China: SIPG Energy completes first simultaneous two-vessel, two-fuel green bunkering operation

SIPG Energy says the simultaneous LNG and bio-methanol bunkering operations demonstrate Shanghai Port’s expanding capability to supply multiple green marine fuels at anchorage.

Published

1 day ago

August 17, 2026

Admin

Shanghai port completes first simultaneous two-vessel, two-fuel green bunkering operation

SIPG Energy (Shanghai) Co Ltd (SIPG Energy) on Sunday (16 August) completed what it described as China’s first simultaneous two-vessel bunkering operation involving two different green marine fuels at anchorage, supplying LNG and bio-methanol to two vessels.

The company’s LNG bunkering vessel Hai Gang Wei Lai supplied LNG to PIL’s KOTA ELAN, while methanol bunkering vessel Hai Gang Zhi Yuan supplied domestically produced biomass-based methanol to CMA CGM’s dual-fuel container ship CMA CGM OSMIUM.

According to SIPG Energy, the two bunkering operations were carried out simultaneously and safely, highlighting Shanghai Port’s growing ability to provide diversified and large-scale green-fuel bunkering services at anchorage.

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The operation required enhanced coordination in safety management, resource allocation and emergency response. Shanghai Maritime Safety Administration, Shanghai Customs and Shanghai General Station of Immigration Inspection, along with other supporting organisations, provided regulatory guidance and operational support.

“The combined efforts of all parties significantly improved the efficiency of bunkering at anchorage,” the company said.

The company said it will continue to expand its safe bunkering capabilities for bio-methanol, LNG and other green marine fuels, while broadening its fuel supply portfolio and service scenarios to support the shipping industry’s transition to lower-carbon marine fuels.

Photo credit: SIPG Energy
Published: 17 August, 2026