Exhaust News

Mitsubishi Heavy Industries Marine Machinery & Equipment Co., Ltd. (MHI-MME) and Mitsubishi Shipbuilding Co., Ltd., both part of the Mitsubishi Heavy Industries (MHI) Group, have obtained Approval in Principle (AiP) from Nippon Kaiji Kyokai (ClassNK) for the basic design of a methane oxidation catalyst system for marine LNG-fueled engines, jointly developed with Daihatsu Infinearth Mfg. Co., Ltd. A presentation ceremony was held today at Sea Japan 2026, an international maritime exhibition being held at Tokyo Big Sight in Koto-ku…

Gotland Horizon X is a 130-meter, 18,300-gt, 1,500-passenger, 400-car, 30-knot catamaran now under construction at Austal for delivery in summer 2028. Positioned as hydrogen-ready from day one, the vessel is not a technology demonstrator. It is a frontline Ro-Pax ferry designed to maintain timetable integrity while opening a credible pathway toward hydrogen. For ports and fuel suppliers, that distinction matters. Horizon X is less about a single vessel and more about what it signals: future-fuel ships are coming that will demand corresponding evolution ashore.Jonas Moberg…

German shipbuilder Meyer Werft has introduced a concept for what it says would be the world’s first fully battery-electric cruise ship exceeding 80,000 gross tons, signaling a bold step forward in the industry’s push toward decarbonization.The concept, dubbed “Vision,” was unveiled at Seatrade Cruise Global in Miami. According to the yard, the 275-meter vessel would accommodate 1,856 passengers and deliver up to a 95% reduction in greenhouse gas emissions compared to conventional cruise ships.The design leans heavily on existing battery technology rather than speculative future solutions.

Jan De Nul has selected Ulstein Design & Solutions to provide the vessel design for a new subsea trenching vessel that will be added to the company’s offshore fleet.The vessel, scheduled for delivery in 2028, will be based on a proven subsea vessel platform adapted to support large-scale trenching operations.Subsea trenching involves creating protective channels on the seabed to bury pipelines, power cables and telecommunications lines.The vessel design will feature a modular configuration allowing it to support activities across several offshore sectors…

Owning and operating a quiet boat offers many benefits, from crew comfort and retention to efficient, safe operations. While the benefits are clear, it’s generally not the first line of design and concern for most vessel owners.Noise is a funny thing in the marine world: it’s invisible, it sneaks up on you, and it’s usually not the headline item on a newbuild spec sheet, until you’re standing in the pilothouse, trying to talk over the machinery, thinking, “oh my gosh, I can’t stand this thing.”That’s the moment Jesse Spence…

Daughter Craft No. 3, commissioned by Purus, is progressing through final outfitting ahead of sea trials. Engines are now installed with Volvo Penta IPS drives, and the vessel’s electronics and interior systems are well underway in outfit.Diverse Marine has worked with Chartwell Marine to produce this daughter craft design, with inboard propulsion systems fitted with IMO Tier 3 exhaust after-treatment to reduce emissions.The Daughter Craft can serve as a nearshore CTV as well…

The IMO's Sub-Committee on Pollution Prevention and Response held its 13th session at IMO Headquarters in London from 9 to 13 February 2026.Outcomes include:Groundwork laid for future legally binding framework on biofoulingFollowing the decision of MEPC 83 to develop a legally binding framework on biofouling management to prevent the spread of invasive aquatic species, the Sub-Committee agreed some fundamental elements that will guide this work. These include the recommendation for the framework to take the form of a standalone instrument…

The shipping industry's biggest players are shrugging off Trump administration opposition to a global carbon price and are forging ahead with billions of dollars in emissions-reducing investments, according to company officials and a Reuters analysis of data.Europe, Brazil and a host of other nations are pushing the sector, which is responsible for nearly 3% of the world's greenhouse gas emissions, to go green. But, in October, the U.S. and Saudi Arabia, the world's two largest oil producers…

The shipping industry's biggest players are shrugging off Trump administration opposition to a global carbon price and are forging ahead with billions of dollars in emissions-reducing investments, according to company officials and a Reuters analysis of data.Europe, Brazil and a host of other nations are pushing the sector, which is responsible for nearly 3% of the world's greenhouse gas emissions, to go green. But, in October, the U.S. and Saudi Arabia, the world's two largest oil producers…

With a growing focus on mitigating climate change and progressing toward the International Maritime Organization’s (IMO) 2050 net-zero target, the marine sector is under intense pressure to decarbonize. Today, maritime transport emits nearly one billion tons of CO2 annually, representing roughly 2-3% of all energy-related carbon emissions worldwide .Substantial progress has been made over the past decade in reducing emissions from small commercial and coastal vessels via all-electric and diesel-electric propulsion (DEP) systems.

NYK Line, in partnership with Ocean Yield AS, has signed multiple long-term charter contracts for new liquefied natural gas (LNG) carriers with Cheniere Marketing International LLP, a wholly owned subsidiary of Cheniere Energy, Inc., a US LNG producer.The vessels will be built at HD Hyundai Heavy Industries Co. Ltd. in South Korea and will be delivered from 2028.The vessels will be equipped with a next-generation X-DF2.1 iCER*, VCR system**, dual-fuel, low-speed diesel engine that uses fuel oil and boil-off gas (LNG vaporized in the cargo tanks during navigation) for the main engine…

Technology group Wärtsilä will supply its Wärtsilä 25 ammonia solution to power a new cargo vessel for Norway-based Skarv Shipping Solutions, marking the first newbuild to use the company’s four-stroke ammonia engine technology.The vessel will be constructed at Huanghai shipyard in China and is intended to support Skarv Shipping Solutions’ strategy to deliver sustainable short-sea shipping services in Northern Europe.Wärtsilä will provide the Wärtsilä 25 Ammonia engine together with the complete fuel gas supply system and exhaust after-treatment…

As global demand for data storage and processing accelerates — driven by cloud computing, streaming media, and the explosive growth of artificial intelligence — the physical footprint of data centers has become a growing challenge. Land-based facilities face mounting constraints: limited space, water scarcity, grid congestion, long permitting timelines and rising community opposition. Against that backdrop, a once-niche concept is moving rapidly into the mainstream conversation: floating data centers.For maritime designers…

Cuts in sulfur emissions from oceangoing vessels have been tied to a reduction in lightning stroke density along heavily trafficked shipping routes in the Bay of Bengal and the South China Sea, according to new research from the University of Kansas (KU).Previous studies had found frequent lightning along shipping routes over the Bay of Bengal before a 2020 IMO rule capped sulfur in fuel used by oceangoing ships, leading to a roughly 70% drop in sulfate emissions in the Bay of Bengal.“I think there are two reasons for this…

Technology group Wärtsilä will supply the engine and propulsion equipment for a new 3,800-deadweight-tonne heavy lift vessel being built for Netherlands-based operator Hartman Seatrade.The vessel will be powered by a Wärtsilä 31 engine, selected to minimize fuel consumption and exhaust emissions. The engine’s modular design is intended to reduce maintenance requirements and costs, while allowing operational flexibility for both slow and fast steaming.The ship will be constructed at Rock Shipbuilding, a newly established shipyard set up by the owner.

HD Hyundai Heavy Industries, Engine & Machinery (HHI-EMD) has successfully verified that its HiMSEN engine can operate stably on ethanol fuel.The company conducted the tests on its 4-stroke methanol dual-fuel engine platform (H32DF-LM) and confirmed that stable operation at all load points is possible. The test focused on verifying startability, combustion stability, power output stability, and exhaust gas characteristics under fuel property differences, while maintaining the existing methanol engine hardware as much as possible.Ethanol…

The FPSO P-78 can produce up to 180,000 barrels per day and will increase the gas supply.Petrobras began oil production from the P-78 floating production, storage and offloading (FPSO) vessel in the Búzios field, in the pre-salt layer of the Santos Basin, this Wednesday, December 31, 2025. Búzios 6 (P-78) has the capacity to produce 180,000 barrels of oil and 7.2 million m³ of gas per day. The FPSO will increase the field's installed production capacity to approximately 1.15 million barrels of oil per day.

Boston Harbor's MV Outward Bound has returned to Gladding-Hearn Shipbuilding, Duclos Corporation for a mid-life refit. Redelivery is planned for spring 2026. Purpose-designed by JW Gilbert Associates and built by the Somerset, Mass., shipyard in 1995, the 64-foot, 140-passenger steel vessel carries visitors and supplies seasonally to Cathleen Stone Island Outward Bound, which offers experiential outdoor programs for youth and adults on the island in Boston Harbor.Along with installing a new shaft and propeller…

Safety management system procedures were not effectively implemented when the Spirit of Tasmania I’s second engineer was seriously injured in a fall during engine maintenance earlier this year, the final report from an Australian Transport Safety Bureau (ATSB) investigation confirmed.The accident occurred during a routine oil change on one of the ship’s main engine turbochargers, while it was berthed in Geelong, Victoria, on March 6.Problems encountered during the work led to the decision to replace the turbocharger’s bearing housing cover plate.

Mavrik Marine, Inc. was selected to build high-speed passenger ferries for the Golden Gate Bridge Highway & Transportation District. Mavrik will construct catamaran passenger ferries as part of the District’s eight vessel Lima Class Ferry Replacement Program to provide transportation services in San Francisco Bay.The 50-m aluminum ferries specifications and systems were developed by Aurora Marine Design in San Diego with structural design from One2Three Naval Architects in Australia. Construction will begin immediately at Mavrik’s facility in La Conner, WA.

Is LNG to ammonia a viable pathway for helping shipowners get to net zero?From an engine point of view there is a pathway, but there are two points to consider, says Lars Tingbjerg Danielsen, Two-Stroke Promotion Manager – Newbuildings at Everllence. First, the case where an engine is capable of burning both methane and ammonia; second the case where an engine starts its service burning methane and then later switches to burning ammonia.“If we look at the idea of an engine capable of burning both methane and ammonia, it is our belief that this is not a request from the market.

Breaux’s Bay Craft delivered its latest aluminum pilot vessel for the Houston Pilots. The first of two, M/V San Jacinto, is the newest addition to the fleet of high-performance pilot boats,designed for  precision, built for strength, and finished with a striking red, white, and blue color scheme that reflects the Gulf Coast heritage of the Houston Pilots.Measuring 80 x 21 feet wide, the San Jacinto is built with a new-generation inverted deep-V bottom hull, exceeds the rigorous operational demands of one of the busiest pilotage services in the U.S.

Fuel-agnostic and suitable for newbuilds and retrofit, Organic Rankine Cycle waste heat recovery systems are making headway as an energy-efficiency measure.Market prospects are looking so good for waste heat recovery systems that Orcan Energy recently expanded its industry relationships by partnering with Goltens on installations.Andreas Sichert, CEO of Orcan Energy, said: “Waste heat recovery is one of the most powerful and underutilized tools for improving energy efficiency.