Site items in: Global

Article

The IMO approved its Net-zero Framework. Now what?

Trevor Brown Andrea Guati Rojo June 26, 2025

The consensus that has emerged from across the ammonia energy industry carries a very simple message for the IMO: adopt.

Article

Emission performance of ammonia-fueled, four-stroke marine engines

Kevin Rouwenhorst June 03, 2025

We explore recent, full-scale, four-stroke engine testing results from IHI and Wärtsilä. Testing indicates N₂O emissions can be almost fully eliminated with catalytic treatment, and significantly lower NO_X emissions for engines running in ammonia mode, compared to running on diesel. While ammonia slip remains a key consideration due to the design of a four-stroke engine, catalytic treatment of the exhaust can eliminate even high concentrations, and release mitigation systems have already been designed and deployed to ensure safe operations.

Article

Ammonia marine fuel cheapest option from late 2030s, dual-fuel vessels lowest-risk

Julian Atchison May 30, 2025

Based on their analysis, UMAS and the University College of London conclude that scalable e-fuels have the highest potential to meet shipping’s new decarbonization targets, but that the next decade is critical to ensure supply chains are ready to supply these fuels. Ammonia-LNG dual-fuel vessels represent the lowest-risk, cheapest decarbonization option to the mid 2030s.

Article

New modular hydrogen production technology unveiled by InterContinental Energy

Geofrey Njovu May 22, 2025

InterContinental Energy’s new hydrogen production technology, the P2(H₂)Node system, colocates hydrogen production within wind and solar farms, lowering Capex and increasing efficiency through minimising expensive electrical transmission infrastructure.

Article

Class societies prepare for marine ammonia fuel: safe operations, crew training, and risk management

Julian Atchison May 18, 2025

ClassNK, DNV, Lloyd’s Register and the American Bureau of Shipping have all released new resources to support the implementation of marine ammonia fuel. We explore vessel operation guidelines and best-practice recommendations, seafarer training programs, and models for ammonia leak dispersion onboard vessels.

Article

Emission performance of ammonia-fueled, two-stroke marine engines

Kevin Rouwenhorst May 06, 2025

We explore recent, full-scale, dual-fuel engine testing results from leading maritime vendors such as MAN Energy Solutions and WinGD. Testing indicates negligible emissions of the potent GHG N₂O (which can be fully eliminated with catalytic treatment), and significantly lower NO_X emissions for engines running in ammonia mode, compared to running on fuel oil or diesel. Overall, compliance with IMO Tier II and III emission limits is well within reach for the first generation of ammonia-fueled maritime engines.

Article

MEPC 83: global shipping gets its first-ever emissions pricing mechanism

Julian Atchison April 23, 2025

The regulations send a clear signal to industry – business as usual operations will become significantly more expensive, and zero or near-zero (ZNZ) technologies and fuels represent one of the better opportunities to make deep emissions cuts. Following the historic vote at the IMO, we explore critical timelines for the new regulations, compliance thresholds, mechanisms for vessels to comply, and uncertainties that remain.

Article

MAN, COSCO to cooperate on engine retrofits

Julian Atchison April 14, 2025

The collaboration integrates MAN’s dual-fuel engine technology with COSCO Shipping Heavy Industry's repair and vessel modification capabilities.

Organization

CertifHy

Article

ZEMBA launches latest e-fuels tender

Julian Atchison March 25, 2025

The Zero Emission Maritime Buyers Alliance has launched its second tender process for decarbonized fuels. Starting in 2027, the tender aims to cover multi-year cargo shipping demand equivalent to 1.5 million loaded, twenty-foot shipping containers transported from Shanghai to Los Angeles.