The Wärtsilä 46F is a four-stroke medium-speed engine series. These engines are ideal for many ship types because they offer the widest fuel flexibility in their power range, which is between 7.5 MW and 20 MW at 600 rpm. The engines are available in 6L to 16V-cylinder configurations. Choose Wärtsilä 46F when you want efficient and reliable performance for a demanding marine application.
The Wärtsilä 46F engines are available in these fuel versions:
All versions are suitable for both constant-speed diesel-electric operation and direct drive main engine propulsion.
The Wärtsilä 46F is your best choice when you are looking for the fastest possible uptake of alternative fuels as soon as this becomes viable for you. More than 18 years of operational history and 7,200,000 running hours are proof of its reliability and maximum uptime. Because the Wärtsilä 46F is flexible and cost-effective in operation, it works brilliantly for applications with high power needs. Such applications include the following, for example:
Will adapt to alternative fuels
The Wärtsilä 46F engine series is flexible and can run on many types of fuel, from heavy fuel oil (HFO) to more sustainable alternatives such as bio-LNG and methanol. Because it is flexible, it can adapt to changing regulatory requirements without significant modifications. It is operationally viable for the long term with lower cost of conversion.
Reliable with maximal uptime
The following figures prove that Wärtsilä 46F is rock-solid reliable:
The engines have extended overhaul intervals, which means better greater availability - and money saved. The modular design with fewer components cuts inventory costs, maintenance, and crew training time.
Cuts emissions and complies with regulations
The engines are designed to meet stringent environmental regulations. IMO Tier III compliance is ensured with a selective catalytic reduction (SCR) system in diesel and methanol modes whereas the dual-fuel engine in gas mode is readily IMO Tier III compliant. Because the engines’ thermal efficiency ensures complete combustion which minimises exhaust gas emissions. Their noise levels are reduced. Methanol certifications speed up the adoption of green fuels, which further improves regulatory compliance.
Efficient, with high power density
The series delivers exceptional fuel economy with best-in-class power-to-weight and power-to-space ratios.
Delivers high performance consistently
Delivers 100% of the engine's load – also in methanol mode, providing 1250 kW per cylinder. Achieves high-power output without compromising efficiency or reliability.
The Wärtsilä 46F engine series are based on a common platform. This allows ship owners and operators to decide their own pace of decarbonisation. The platform design leverages our extensive experience with the original Wärtsilä 46F engine since 2007 and with methanol as marine fuel since 2015. There are four engine versions for tailored pathways to a low-carbon future.
Get technical data and system proposals for designing Wärtsilä 46F and Wärtsilä 46DF marine engine installations.
If you are considering a switch to low-carbon fuel, methanol is an attractive option. Green methanol has the potential to be carbon free, and it meets current and future emissions targets in terms of NOx, SOx and particulates.
Discover the benefits others have already gained from Wärtsilä 46F engines.
The technology group Wärtsilä will supply the engines and fuel gas supply systems for two new Ro-Pax ferries. The vessels are being built at the Rauma Marine Constructions (RMC) yard in Finland for TT-Line Company Pty Ltd, a renowned Australian ferry fleet owner and operator. The order with Wärtsilä was placed in June 2021.
TT-Line currently operates two ferries, Spirit of Tasmania I and Spirit of Tasmania II, both of which operate with Wärtsilä engines, on the route between Melbourne, Victoria and Devonport, Tasmania. This fleet is now being renewed by the building of two new 212 metre long vessels, which will adopt the latest technology and be powered with LNG fuel to lessen the environmental impact.
“Since 2002 when the current vessels were inducted into our fleet, the Wärtsilä engines have delivered both performance and reliability backed by strong service and technical support. Keeping in mind the IMO’s stringent emission targets for the future, TT Line has opted for LNG fuelled ferries. Wärtsilä’s depth of experience and broad portfolio of LNG-fuel solutions for marine applications were prime considerations for us,” says Bernard Dwyer, Chief Executive Officer of TT-Line.
“We have worked closely with TT-Line for a number of years and are pleased and proud to continue this long-standing relationship via this latest newbuild project. We shall extend our best technical and operational support to TT-Lines’ new ferries. Wärtsilä has played a major role in enabling LNG to become a viable and increasingly popular marine fuel, and its adoption by global operators continues to grow. This order is a clear reflection of that trend,” says Mikko Mannerkorpi, General Manager, Sales, Wärtsilä Marine Power.
“Our goal is to be a pioneer in environmentally sustainable technology in shipbuilding, and we want to provide vessels to our customers accordingly. The LNG-powered engines play an important part in building two new eco-efficient and future-proof vessels for TT-Line,” says Jyrki Heinimaa, President & CEO of Rauma Marine Constructions.
The scope of supply includes, for each ship, four Wärtsilä 46DF dual-fuel main engines, three Wärtsilä 20DF dual-fuel auxiliary engines, and two Wärtsilä LNGPac fuel storage, supply, and control systems. The engines are future-proofed to operate on alternative green fuels as and when the availability evolves.
The new ferries will have a capacity of 1800 passengers and approximately 2500 lane metres on two freight decks. The first vessel is scheduled for delivery by the end of 2023, with the second one due a year later.
Media contact for more information on this release:
Ms Marit Holmlund-Sund
General Manager, Marketing Communications
Wärtsilä Marine Power
Mobile +358 (0)40 538 3519
marit.holmlund-sund@wartsila.com
Image caption:
The new TT-Line ferries will be powered by Wärtsilä engines fuelled by LNG. Wärtsilä will also supply its LNGPac fuel storage, supply and control system. Designed by Rauma Marine Constructions Oy. © Rauma Marine Constructions Oy.
All Wärtsilä releases are available at https://www.wartsila.com/media/news-releases and at http://news.cision.com/wartsila-corporation where also the images can be downloaded.
Wärtsilä Marine Power in brief
Wärtsilä Marine Power leads the industry in its journey towards a decarbonised and sustainable future. Our portfolio of engines, propulsion systems, hybrid technology, and integrated powertrain systems deliver the reliability, safety, and environmental performance that Wärtsilä’s Smart Marine vision encompasses. We offer our customers performance-based agreements, lifecycle solutions, and an unrivalled global network of maritime expertise.
www.wartsila.com/marine
Wärtsilä in brief:
Wärtsilä is a global leader in smart technologies and complete lifecycle solutions for the marine and energy markets. By emphasising sustainable innovation, total efficiency and data analytics, Wärtsilä maximises the environmental and economic performance of the vessels and power plants of its customers. In 2020, Wärtsilä's net sales totalled EUR 4.6 billion with approximately 18,000 employees. The company has operations in over 200 locations in more than 70 countries around the world. Wärtsilä is listed on Nasdaq Helsinki.
www.wartsila.com
Rauma Marine Constructions in brief:
Rauma Marine Constructions (RMC) is one of the leading shipbuilding companies in Europe. RMC was formed in the summer of 2014 in Rauma and is wholly Finnish-owned. RMC specialises in building and servicing multipurpose icebreakers, car and passenger ferries and naval vessels. More information is available at www.rmcfinland.fi
TT-Line in brief:
TT-Line operates Spirit of Tasmania - one of Australia’s most iconic travel experiences, and a vital connection between mainland Australia and the island state of Tasmania. Twin ships, Spirit of Tasmania I and Spirit of Tasmania II, operate overnight sailings across Bass Strait between Melbourne, Victoria and Devonport, Tasmania. Transporting more than 450,000 passengers annually, Spirit of Tasmania is widely recognised for its contribution to the Australian tourism industry and for fostering Australia’s economic development through the provision of a world-class passenger and freight service. Since its inception, Spirit of Tasmania has continued to grow steadily through its commitment to safety, reliability and in delivering unparalleled level of customer service.
www.spiritoftasmania.com.au
