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Greenhouse exhaust emissions a main concern for ships 

As ships carry passengers and cargo throughout the world, they produce exhaust emissions that have a damaging impact on fragile ecosystems. Finding ways to reduce emissions and make ships greener is an important factor for the future of the marine sector. 

Emission regulations becoming even tougher


The shipping industry is responsible for transporting over 95% of all goods traded around the world today. Many ships, like cruise liners and tugs, travel in environmentally sensitive areas. To do so, their engines need to meet very strict emission regulations. IMO Tier III, Emission Control Area (ECA) and Energy Efficiency Design Index (EEDI) regulations define the limits for all vessels sailing in international waters. The global response to the devastating effects of pollution and global warming on marine ecosystems is to adopt even tougher rules for emissions, as seen at the 2015 Paris Climate Conference (COP21).

Keeping hazardous greenhouse emissions to a minimum is a top priority. At the same time, it is also important to not sacrifice ship engine performance and propulsion efficiency. To ensure the future viability of their fleets, ship owners and operators need to do everything they can to minimize the carbon footprint of their vessels. They need to constantly reduce NOx and SOx emissions to stay ahead of ever stricter legislation as it emerges. This means finding and using alternative fuels while utilizing available technologies to operate the cleanest ships possible.




target global temperature limit increase set in Global Shipping’s Action Plan
in emission reductions possible through energy efficiency, according to the Int. Energy Agency (IEA)
reduction in NOx emissions possible with MAN SCR (Selective Catalytic Reduction)

MAN solutions to reduce emissions at sea

MAN Emission Control technologies reduce a ship's emissions through technologies to improve efficiency and utilize cleaner fuels. In this way, we help ships meet all current and future regulations while ensuring a lower impact on the environment.

We offer our Emission Control technologies as part of MAN ECO CONTROL, a portfolio of technologies that will help optimize ship performance in terms of emissions, economy and operation. Ship operators benefit from smart processes, efficient operation and predictive maintenance services.


Battery-hybrid solutions


MAN Energy Solutions offers marine battery-hybrid systems, which combine combustion engines with additional batteries to capture and store electric power, optimizing engine operation while reducing emissions. We acquired a 40 percent stake in Aspin Kemp & Associates (AKA), a specialist in the integration of electric propulsion and energy storage systems to enhance our expertise and range of products in this field.

We also offer fully customized hybrid propulsion systems in which mechanical and electric engines work together. These are ideal for vessels with flexible operation profiles and running hours with varying power demands. Our versatile MAN HyProp ECO package combines a CP propeller, diesel engine and electric shaft machine to ensure the highest efficiency and lowest emissions in all operating modes – optimized to meet your vessel’s specific needs.

How you benefit:

  • Fewer NOx, SOx and CO2 emissions
  • Zero emissions when just batteries are used (especially at slow speeds)
  • Increased fuel efficiency
  • Quieter operation
  • Batteries reduce transient loads, preventing black smoke during maneuvering
  • Wide range of operation modes
  • Improved performance

Dual Fuel & LNG Gas

Graphic DualFuel LNG Gas Supply

After our 2016 acquisition of Cryo AB, a manufacturer of cryogenic equipment with over 50 years’ experience in cleaner burning Liquefied Natural Gases (LNG), MAN Energy Solutions created the MAN Cryo product brand – the perfect complement to our dual fuel engines. We offer solutions for comprehensive engine and environmentally friendly fuel gas supply systems (FGSS), offshore and onshore bunkering systems, and stationary distribution systems for regasification or fuel filling – all from a single source.

We can tailor our dual fuel propulsion systems to meet every requirement: from LNG technology for dual fuel propulsion to complete LNG handling systems (including carriers, floating storage and regasification units, feeder and bunker vessels).

How you benefit:

  • Clean burning gas, fewer NOx emissions
  • Increased fuel efficiency
  • Lower operating costs
  • Dual fuel system means flexibility and fuel independence
  • One point of contact for all components, training and support

Exhaust Gas After Treatment

We offer proven exhaust gas after treatment systems that meet the International Maritime Organization’s strict regulations for NOx emissions and fuel sulfur content, even in Emission Control Areas (ECA). Selective catalytic reduction (SCR) and exhaust gas recirculation (EGR) are highly effective technologies to minimize harmful NOx emissions.

Our MAN SCR system is an integrated solution available in 14 different sizes for our entire range of four-stroke medium speed engines. It induces chemical reactions in engine exhaust gases to convert harmful substances into environmentally safe ones. We can also customize MAN SCR systems for new buildings and retrofits upon request.

How you benefit:

  • Reduce NOx emissions up to 90%
  • IMO Tier III compliance in ECA
  • Increased fuel efficiency
  • Increased power density
  • One source, one point of contact
  • Minimum costs, maximum flexibility


Service solutions for optimum cost-efficiency 

MAN PrimeServ offers advanced modernization solutions to optimize the reliability, availability, and economic efficiency of existing equipment. Furthermore, MAN’s modernization and retrofit solutions are tailor-made to customers’ specific applications and machinery.

To MAN PrimeServ

MAN PrimeServ
total plant efficiencies for Combined Heat & Power applications
installed capacity since 1985




World’s first container ship converted to dual fuel

Our Emission Control solutions are designed to meet a wide range of customer requirements and applications while improving their overall environmental impact.

Customer:Wessels Reederei GmbH & Co. KG

Retrofit container ship to dual fuel (LNG)

Location: Germany
Completion:August 2017
Commercial Operation:07 / 2015
MAN’s Work Scope:

MAN multi-fuel, four-stroke MAN 51/60DF engine, supplied all conversion components

Watch video on YouTube

Forward-looking Emission Control solutions ensure the viability and profitability of the marine industry

  • Reduced emissions for an improved greenhouse footprint, meeting all regulations
  • Technologies to use alternative and cleaner burning fuels (LNG)
  • Increase fuel efficiency for reduced costs
  • Improved engine performance and flexibility
Contact us


Related news

Tuesday, January 26, 2021

ME-GI to Power Ultra-Large Hapag-Lloyd Containerships

Six individual, dual-fuel main-engines bound for series of vessels

MAN Energy Solutions has won an order for 6 × MAN B&W 11G95ME-GI Mk10.5 main engines in connection with the building of 6 × ultra-large, 23,500+-teu container vessels for Hapag-Lloyd, one of the world’s leading liner-shipping companies.

The engines will be built in Korea and will offer the option of operating on LNG or conventional fuel, meeting Tier III emission standards through SCR (Selective Catalytic Reduction). The first engine delivery is scheduled for May 2022. Korean shipyard, Daewoo Shipbuilding & Marine Engineering, will build the vessels with delivery expected from April through December 2023.

In the company’s own press release, Rolf Habben Jansen, CEO of Hapag-Lloyd said: “With the investment in six ultra large container vessels we will not only be able to reduce slot costs and improve our competitiveness on the Europe – Far East trade, but also take a significant step forward in modernizing our fleet. Additionally we will further reduce our environmental impact.”

The newbuildings will be deployed on the Europe – Far East routes as part of THE Alliance and will significantly increase Hapag-Lloyd´s competitiveness in this trade. The engines will operate on LNG, but have sufficient tank capacity to operate alternatively on conventional fuel.

Bjarne Foldager, Senior Vice President and Head of Two-Stroke Business at MAN Energy Solutions, said: “These newbuildings will be fitted with mature ME-GI technology that continues to accumulate references across multiple segments. The engines’ fuel-efficiency and negligible methane-slip tie in perfectly with Hapag-Lloyd’s strategy of sustainability. As we move towards a zero-carbon future, the ME-GI showcases our dual-fuel engine portfolio that is future-proofed to handle whatever alternative fuels come to prominence in the decades ahead.”

The new business follows a series of recent ME-GI sales with 5 × 6G70ME-GI Mk 10.5 dual-fuel engines ordered in October 2020 for 5 × Newcastlemax bulkcarriers for EPS, the Singapore-based shipping company. The previous month, Guangzhou Shipyard International Co., Ltd. (GSI) ordered 2 × 6G60ME-GI Mk 10.5 dual-fuel engines for 2 × LR2 tankers for Hafnia, one of the world’s leading, oil-product tanker owners and operators.

MAN Energy Solutions states that its low-speed, dual-fuel references now exceed 360 units, with the ME-GI recording over 1.5 million operating hours on LNG alone.

The ME-GI engine – the new industrial standard

MAN Energy Solutions successful ME-GI (-Gas Injection) engine has set a new industrial standard for two-stroke propulsion engines aboard – among others –  container vessels, bulk carriers, tankers, LNG carriers and car carriers. The ME-GI engine provides ship-owners and operators with a peerless solution within environmentally friendly and high-efficiency, two-stroke technology, without the greenhouse emissions such as methane slip that are characteristic of competing engines.

With the ME-GI engine, two-stroke development has taken a step further by combining the unique properties of multi-fuel combustion and the well-known reliability of MAN Energy Solutions ME-engine. The Diesel principle not only provides the ME-GI engine with high operational stability and efficiency, but also ensures 100% stable and reliable operation during load changes on gas with just normal additions of pilot-oil amounts. Furthermore, the ME-GI operational principles features a seamless change-over between gas operation and diesel operation  The ME-GI engine is the most environmentally friendly, technology available within the two-stroke engine segment.

MAN Energy Solutions has also developed an ME-LGI (-Liquid Gas Injection) dual-fuel engine that expands the company’s dual-fuel portfolio, enabling the use of more sustainable fuels such as methanol and liquefied petroleum gas (LPG).

The Maritime Energy Transition

MAN Energy Solutions believes that it is time for what it terms a ‘Maritime Energy Transition’ to find clean, decarbonised solutions for seaborne trade and transportation. Essentially, it is the company’s call to action to reduce emissions and establish natural gases as the fuels of choice in global shipping. It strongly promotes a global ‘turn to gas’, driven by the IMO, and a common approach by the shipping industry and politics to invest in infrastructure development and retrofits.

About Hapag-Lloyd

With a fleet of 234 modern container ships and a total transport capacity of 1.7 million TEU, Hapag-Lloyd is one of the world’s leading liner shipping companies. The company has around 13,200 employees and 388 offices in 129 countries. Hapag-Lloyd has a container capacity of approximately 2.7 million TEU – including one of the largest and most modern fleets of reefer containers. A total of 121 liner services worldwide ensure fast and reliable connections between more than 600 ports on all the continents. Hapag-Lloyd is one of the leading operators in the Transatlantic, Middle East, Latin America and Intra-America trades.



  • PM_MAN_ES_Hapag-Lloyd_ME-GI_GER
    PDF, 211 KB English
  • PR_MAN_ES_Hapag-Lloyd_ME-GI_ENG
    PDF, 211 KB English


Nils Søholt

Trade Press Marine

Group Communications & MarktingMAN Energy SolutionsTeglholmsgade 412450 Copenhagen SVDenmark

t +45 33 85 26 69

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