Propulsion Energy Efficiency campaign

Propulsion Energy Efficiency

Improve your vessel performance

Propulsion Energy Efficiency

In the fiercely competitive world of shipping, every drop of fuel matters. Wärtsilä continuously develops energy efficiency solutions that help you improve your vessel performance, achieve significant fuel savings and reduce environmental impact, not to forget getting a quick return on your investment.

Over the years, and due to continuous improvement efforts, propeller efficiency has reached its physical limits considering the applicable design constraints. To further optimise the overall propulsive efficiency of ships, the industry has moved towards the development of energy-saving devices. These are devices that can be mounted onto or close to the propeller that help reduce the magnitude of axial, frictional, and rotational loss factors.

Recently such energy efficiency solutions were installed on six Delphis vessels, helping them improve energy efficiency on each ship with a minimum of 4 % saving 458 tonnes of fuel per year. 

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In modern ships, only 25 to 35 percent of the energy contained in the fuel is effectively used to propel the ship. The challenge is to reduce the loss factors involved in converting the main engine’s output into propeller thrust and thereby increase overall propulsion efficiency. An investment in reliable, modern propulsion technology has a short payback time and increases the fleet’s competitiveness.

Wärtsilä’s energy efficiency solutions provide significant savings for Delphis

Delphis’s ice-classed container ships were fitted with Wärtsilä propellers and propeller caps, improving energy efficiency by 4%.

Delphis, a division of CMB Group, specialises in mid-size container ships focused on regional trade. They approached Wärtsilä with the goal of improving the fuel efficiency of part of their fleet.

“The main goal we had was to increase the energy efficiency of the vessels considering their operating profile,” says Bart Rombouts, Technical Director of CMB. “We wanted a new propeller system to increase energy efficiency.”

Shipowners and operators are demanding increasing efficiency both for environmental and economic reasons. New ships are ultra-efficient compared to their predecessors, but it is also possible to remarkably improve efficiency on older vessels with the right upgrades. Delphis wanted to enhance fuel efficiency for six of their ships which had been chartered by one of Europe’s biggest container ship and supply vessel operators.

Wartsila Energy Efficiency
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Download BWP Wartsila EnergoFlow

Wärtsilä EnergoFlow - Robust and reliable

Wärtsilä’s energy efficiency solution, EnergoFlow is a path-breaking solution enabling the maritime sector’s transition towards efficient low-carbon shipping. It’s been tried and tested, and the results validate it as a smart choice for future-proof shipping.
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Fuel efficiency with
Wärtsilä EnergoFlow

In today’s increasingly competitive shipping environment, you need solutions that not only increase your efficiency, but that are also reliable and have a short payback period. 
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Energy savings with
Wärtsilä EnergoProFin

The Wärtsilä EnergoProFin is an energy saving propeller cap with fins that rotate together with the propeller. This solution provides average fuel savings of 2%, with a payback time of less than one year.
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Efficiency with new
propeller design

Improving fuel efficiency  is considered to be the most effective way to reduce a vessel’s operating costs.
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Propulsion efficiency
upgrade with a nozzle

Propulsion efficiency is one of the most effective ways of reducing operating costs. The Wärtsilä High Performance (HP) Nozzle improves propulsion efficiency resulting in increased thrust and fuel savings.
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Wärtsilä EnergoPac

EnergoPac can effectively reduce the operational costs for any vessel with a considerable share of free sailing time in its operational profile. It works very well for propellers with a relatively large propeller hub.
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Wärtsilä EcoControl

The Wärtsilä EcoControl’s active combinator uses a smart control system that seeks and combines the optimal propeller pitch with the optimal engine loading. In this way, fuel consumption is reduced to its most efficient level during transit sailing modes.
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Improved energy efficiency - Wärtsilä propulsion solutions

In today's increasingly competitive shipping environment, you need solutions that not only increase the ship's efficiency but are also reliable and have a shorter payback period.  Check the video which gives an introduction to our propulsion efficiency solutions.


Propelling into better prospects

Research and development in propeller design is an ongoing process. And rightly so, Wärtsilä’s propeller...
6 June 2018
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Bytes and bronze: how digital propellers...

More powerful digital simulation is allowing Wärtsilä’s designers to fine-tune propeller shapes down...
31 May 2018
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Wärtsilä EnergoFlow boosts propulsion...

Wärtsilä has launched its latest energy-saving device for ship engines, a next-generation pre-swirl stator...
8 November 2017
  • In Detail article

Press releases

Wärtsilä signs agreement for deployment of innovative gate rudder technology

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Leanships project with
Wärtsilä & partners achieves 3.5% fuel savings for ships with CPPs

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Wärtsilä introduces an
innovative pre-swirl stator to improve fuel efficiency

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