Business

NASA study finds evidence that IMO 2020 sulphur cap reduced air pollution from shipping

Researchers concluded the global fuel regulation played the dominant role in reducing ship tracks in 2020; pandemic-related disruptions played a secondary role.

Published

3 years ago

October 20, 2022

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The IMO 2020 sulphur cap has reduced artificial “ship track” clouds to record-low levels in 2020, reveals a new study conducted by the National Aeronautics and Space Administration (NASA) which it announced on Wednesday (19 October).

NASA explained ship tracks, the polluted marine clouds that trail ocean-crossing vessels, are a signature of modern trade.

“Like ghostly fingerprints, they trace shipping lanes around the globe, from the North Pacific to the Mediterranean Sea. But in 2020, satellite observations showed fewer of those pollution fingerprints,” it said.

Drawing on nearly two decades of satellite imagery, researchers found that the number of ship tracks fell significantly after a new fuel regulation went into effect.

“A global standard implemented in 2020 by the International Maritime Organization (IMO) – requiring an 86% reduction in fuel sulfur content – likely reduced ship track formation. COVID-19-related trade disruptions also played a small role in the reduction,” NASA added.

Scientists used advanced computing techniques to create the first global climatology (a history of measurements) of ship tracks. They used artificial intelligence to automatically identify ship tracks across 17 years of daytime images (2003-2020) captured by NASA’s Moderate Resolution Imaging Spectroradiometer (MODIS) aboard the Aqua satellite.

“Without this kind of complete and large-scale sampling of ship tracks, we cannot begin to completely understand this problem,” said lead author Tianle Yuan, an atmospheric scientist at NASA’s Goddard Space Flight Center in Greenbelt, Maryland, and the University of Maryland, Baltimore County.

Ship tracks were first observed as “anomalous cloud lines” in early weather satellite images acquired in the 1960s. They are formed by water vapor coalescing around small particles of pollution (aerosols) in ship exhaust. The highly concentrated droplets scatter more light and therefore appear brighter than non-polluted marine clouds, which are seeded by larger particles such as sea salt.

“By capping fuel sulfur content at 0.5% (down from 3.5%), IMO's global regulation in 2020 changed the chemical and physical composition of ship exhaust. Less sulfur emissions mean there are fewer of the aerosol particles released to form detectable ship tracks,” NASA said.

According to the Yuan and colleagues, similar but regionally defined sulfur regulations – such as an IMO Emission Control Area in effect since 2015 off the west coast of the U.S. and Canada – had not had the desired effect because operators altered their routes and charted longer courses to avoid designated zones.

While analysing 2020 data, the researchers found that ship-track density fell that year in every major shipping lane. (See the map above.) Ship-based tracking data indicated that the COVID-19 pandemic played a role by decreasing global shipping traffic by 1.4% for a few months. But this change alone could not explain the large decrease in observed ship tracks, which remained at record-low levels through several months of 2021 (the most recent data analysed).

The researchers concluded that the new global fuel regulation played the dominant role in reducing ship tracks in 2020.

Photo credit: NASA / NASA Earth Observatory
Published: 20 October, 2022

Winding up

Singapore: Annual general meetings scheduled for Xihe Holdings subsidiaries

Development includes Da Xin Tankers, Dong Sheng Tankers, Dong Ya Tankers and Hua Zhong Shipping; meetings will be held electronically on 7 and 8 May, according to Government Gazette notices.

Published

21 hours ago

April 23, 2025

Admin

Several notices were published on the Government Gazette on Tuesday (22 April) regarding the annual general meetings of the companies and creditors to be held electronically on 22 April for Xihe Holdings subsidiaries.

The subsidiaries are Dong Sheng Tankers Pte Ltd, Da Xin Tankers Pte Ltd, Dong Ya Tankers Pte Ltd, and Hua Zhong Shipping Pte Ltd.

Annual general meeting for Dong Sheng Tankers are to be held on 8 May at the following times:

For the company: 2pm

Annual general meetings for Da Xin Tankers are to be held on 7 May at the following times:

For the company: 10am
For the creditors: 11am

Annual general meetings for Dong Ya Tankers are to be held on 8 May at the following times:

For the company: 10am
For the creditors: 11am

Annual general meetings for Hua Zhong Shipping are to be held on 7 May at the following times:

For the company: 2pm
For the creditors: 3pm

The agenda for all the meetings are:

To receive an update on the liquidation.
To receive an account of the Liquidators’ acts and dealings, and of the conduct of the winding up

Manifold Times previously reported on the winding up of Da Xin Tankers, Dong Ya Tankers and Hua Zhong Shipping Pte Ltd and the appointment of the joint and several liquidators of the firms.

Photo credit: Drew Beamer
Published: 23 April, 2025

LNG Bunkering

Osaka Gas launches shore-to-ship LNG bunkering service at its terminal

Company says it is the first gas utility company in Japan to offer LNG bunker fuel at its terminal to vessels and is also exploring the potential of replacing LNG with e-methane as a marine fuel.

Published

22 hours ago

April 23, 2025

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Osaka Gas launches shore-to-ship LNG bunkering service at its terminal

Osaka Gas on Monday (21 April) said it has launched its shore-to-ship LNG bunkering service, becoming the first gas utility company in Japan to offer liquefied natural gas (LNG) at its terminal to vessels.

The first delivery took place today at Osaka Gas’ Senboku LNG Terminal in Takaishi City, Osaka Prefecture, where LNG was supplied to Verde Heraldo, a bulker operated by Mitsui OSK Lines (MOL).

Manifold Times previously reported that the bulker will sail under long-term transport contracts to supply raw materials for JFE Steel Corporation's mills.

With the launch of the shore-to-ship service, in addition to its existing truck-to-ship LNG bunkering service—operational since 2019—Osaka Gas enhances its LNG fuel delivery capabilities to address the current scarcity of facilities in Japan that can supply LNG to vessels.

The company’s future plans include the introduction of a ship-to-ship LNG bunkering service utilising a dedicated LNG bunkering vessel, scheduled to commence in fiscal 2026.

These supply methods aim to provide a stable and flexible LNG fuel supply to an increasing number of LNG-fuelled vessels as the maritime industry transitions away from heavy fuel oil.

This growth in LNG-fuelled vessels is driven by global decarbonisation trends and the International Maritime Organization’s target to achieve net zero greenhouse gas emissions by 2050. Through its LNG bunkering services, Osaka Gas is well-positioned to contribute to maritime industry sustainability.

Osaka Gas launches shore-to-ship LNG bunkering service at its terminal

In addition to expanding LNG fuel supply to vessels, Osaka Gas is exploring the potential of replacing LNG with e-methane as a marine fuel.

Photo credit: Osaka Gas
Published: 23 April, 2025

Alternative Fuels

Japan: J-ENG begins co-firing of first full-scale marine engine with ammonia

Company says the first Japanese-developed and manufactured commercial full-scale, low-speed, ammonia-fuelled two-stroke engine has started co-firing operation with ammonia.

Published

22 hours ago

April 23, 2025

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Japan: J-ENG begins co-firing of first full-scale marine engine with ammonia

Japan Engine Corporation (J-ENG) on Monday (21 April) said the first Japanese-developed and manufactured commercial full-scale, low-speed, ammonia-fuelled two-stroke engine has started co-firing operation with ammonia, which will be installed in a vessel.

J-ENG is developing the engine under the “Green Innovation Fund Project: Next-generation Ship Development” of the New Energy and Industrial Technology Development Organization (NEDO).

Since May 2023, when J-ENG started the world's first ammonia co-firing operation of a large, low-speed, two-stroke engine in a test engine, J-ENG has obtained many results and knowledge, including stable operation at high ammonia co-firing rates and safe handling of ammonia, through various test operations over a period of about a year and a half.

J-ENG will conduct verification operations on the full-scale engine and plans to ship the engine in October of this year. The engine will be installed on an Ammonia-fuelled Medium Gas Carrier (AFMGC) and then demonstration operations of the vessel will be carried out then.

In order to accommodate a wide variety of ammonia-fueled vessels, J-ENG is also concurrently developing an ammonia-fueled engine with a cylinder bore of 60cm, following the first engine with a 50cm cylinder bore mentioned above, for several promising follow-on projects.

Furthermore, after achieving the development and social implementation of these engines, the company has decided to construct a new plant with the support of a subsidy project by the Ministry of the Environment and the Ministry of Land, Infrastructure, Transport and Tourism through the GX Economic Transition Bonds.

The new plant, which is scheduled for completion in 2028, will expand the production of ammonia fuel engines (in the product mix with fuel oil engines) and promote the spread and expansion of zero-emission ships.

“J-ENG, as a first mover of next-generation fuel engines, will contribute to the development of the Japanese shipping and shipbuilding industries through the early launch and expansion of these engines, and at the same time, contribute to the reduction of greenhouse gases (GHG) in international shipping and the achievement of carbon neutrality by 2050,” the company said on its website.

Photo credit: Japan Engine Corporation
Published: 23 April, 2025