Supporting the French green shipping revolution

By Sarah Zitouni, Lean Marine Sweden AB

In a world where ecological concerns run high, every industry is under pressure to reduce their environmental impact. The international shipping industry is no exception.

During the 45th G7 summit held in Biarritz, France in August, the nation’s president Emmanuel Macron declared his intention to place the country at the forefront of a green shipping revolution by slashing the greenhouse gas emissions of the French owned fleet. His favoured silver bullet for achieving this mission? Slow steaming: the practice of operating cargo ships at significantly less than their maximum speed.

President Macron’s exact words to the gathered group of world leaders were, “We will engage with shipping companies to reduce the speed of merchant ships. It is one of the most effective ways to reduce greenhouse gas emissions globally, and this measure would be a real change.”

As a French national working for a Swedish company offering a technology that can make ship operations greener by automatically optimizing engine propulsion efficiency, I heard the call of the “start-up nation President” loud and clear.

At Lean Marine our mission statement, “Make it Green: Pragmatic, ecologically minded solutions”, is very much aligned with President Macron’s mission. Our technology FuelOpt™ is an advanced control system that uses powerful algorithms to process data collected from sensors on board and, in real-time, directly optimize every aspect of the propulsion line. This enables officers on the bridge as well as the captain, to minimize fuel consumption of a vessel at a given power or speed via a user-friendly panel on the bridge.

FuelOpt™ is the tool needed for slow steaming as it ensures that this new target speed will actually be maintained without large variation, similar to the cruise control function on a car. For vessels with Controllable Pitch Propeller, FuelOpt™ capabilities to optimize the complete propulsion line corrects for the known adverse effect that slow steaming has on this propulsion when propellers are pitched at low values.

Furthermore, the performance of a vessel can be monitored through Lean Marine’s Fleet Analytics™ software system. This allows onshore personnel to gain insight into the current health of a vessel, empowering them to take complimentary actions for improving the vessel condition, which in turn allows FuelOpt™ to achieve yet more reductions in fuel consumption. These combined efforts trigger a virtuous circle of continuous improvement of vessel performance as well as reductions in GHG emissions. FuelOpt™ has no hidden costs: ‘lean’ is the key word here. The solution can be placed on any existing vessel during operation without requiring a costly docking of the ship. The potential fuel savings at stake range between 3-10%, depending on the type of propulsion and the degree of optimization the vessel is already under.

FuelOpt™ is the perfect technology to support the realisation of President Macron’s mission of a greening the French shipping fleet. It perfectly combines with other fuel saving measures such as slow steaming or wind-assisted propulsion technologies installations, since it acts as an integrator, making sure the engine speed is always adjusted as per needs.

Of course, Macron’s strategy is one that very much suits the French containership fleet, the slowing down from the higher speeds typically adopted by containerships converts into great fuel savings and GHG emission reductions. As such, CMA CGM has been trusted by Mr Macron to head a new

green shipping lobby group. The carrier has shown enthusiasm for the concept of slow steaming with the design for two new vessels it has on order pointing to a preference for slow steaming.

FuelOpt™ is already installed on 130 vessels and with appreciated interest from big shipping players including CMA-CGM, Lean Marine aims to support the French ship owners achieve their targets to become the greenest fleet in Europe.

Eliminating Energy Waste Through Ship Propulsion Automation

By Anders Bergh, Lean Marine Sweden AB

Most vessels voyaging the world’s oceans at this moment in time are wasting energy, no matter how sophisticated the machinery on board, and inadequacies in the overall management of vessel speed and fuel consumption are to blame.

Think of a cyclist competing in a race in the Alps; rarely would you see these athletes trying to maintain the same speed both uphill and downhill. If they did, they would quickly run out of energy climbing the mountain and that strategy would be illogical. However, this strategy is often adopted as the norm for ship operation.

Usually, a vessel is given a speed or RPM order which it maintains throughout any changing conditions along its route, with the result being varying power and wasted energy. Of course, unlike the cyclist competing in the Alps race, a commercial vessel is rarely engaged in a competitive race to the finish. Instead, a vessel is usually working towards achieving a specified estimated time of arrival.

To achieve optimal fuel consumption, keeping a real time eye on the vessel’s output power and adjusting propulsive parameters according to the vessel’s specific best practice of operation is required throughout a voyage.

To achieve optimal fuel consumption, keeping a real time eye on the vessel’s output power and adjusting propulsive parameters according to the vessel’s specific best practice of operation is required throughout a voyage.

The operation of a vessel equipped with a controllable pitch propeller can present much wasted energy. These vessels typically run on afixed propeller RPM and let the angle (pitch) of the propeller blades dictate the propulsive power, or in a combinator mode with static setting of different pitch and RPM. As most vessels rarely need their full engine power, and operate in varying load and weather conditions, they consistently operate with lower pitch which has been shown to be a large source of hydrodynamic energy waste. Therefore, there is a lot of potential to save fuel by letting the two parameters, pitch and RPM, be separately controlled while aiming to produce the most amount of propeller thrust for the least required amount of power. Operating in this way is also likely to improve the specific fuel consumption of the vessel’s main engine.

But how can vessel operators stop wasting energy? Addressing these sources of energy wastage is not a trivial problem to solve. However, it would require someone (or something) to keep constant track of the running parameters to ensure they get the requested result. But this is harder than it sounds, particularly when considering the man hours required to achieve this. In simple terms, doing the monitoring, constant tweaking and adjusting manually is an arduous task. What vessel operators need is for this manual task of monitoring, tweaking and optimizing propulsive power to be automated.

The development of hardware to automate the real time monitoring and control of propulsion parameters was a challenge adopted by a group of Swedish innovators with extensive experience in shipbuilding, naval architecture, propulsion and marine control system technology.

The result of research and proprietary work conducted by the group was a technology called ‘FuelOpt’, which was launched onto the market in 2012 by Gothenburg-based company Lean Marine.

Lean Marine’s FuelOpt technology is a unique control system that is installed as an addition to the existing traditional systems on-board. The technology optimizes a vessel’s performance in real time. Whenever the vessel is in transit (and using most of its power for propulsion) FuelOpt will step in and take away costly variations in speed and power due to human operational factors and optimize propulsion parameters such as pitch and RPM for maximum efficiency. The technology can be installed into any vessel during operation in just a few days and no time off-hire is required.

“FuelOpt offers owners the ability to have the cruise control system found in their cars, installed onboard their vessels.” says Lean Marine’s managing director Nicklas Karlsson. “Think of it as a very sophisticated cruise control for your vessel,” he adds. 

In addition to offering sophisticated ship cruise control functionality, in the case of a controllable pitch vessel, FuelOpt also acts as a dynamic tuning system for propulsion machinery, all the time making sure it is tuned for the least possible fuel consumption. This is powerful hardware that delivers automated fuel savings.

Lean Marine’s unique product portfolio is actually based on two separate technologies. In addition to the FuelOpt technology, the company offers a data analysis tool called Fleet Analytics which allows for both verification of fuel use reduction results achieved by FuelOpt and to increase the ship owner’s knowledge of their vessel operations. Fleet Analytics incorporates a large amount of sensor data from the vessel to give user a powerful overview of the vessels situation and performance via a clear web-based interface. The system can also greatly reduce the workload for on-board personnel through offering powerful reporting functions.   

“With access to all these data sources on the vessel we’re also helping the crew create very quick and powerful reports for many different purposes. Internal voyage reports and the EU mandated MRV report being two examples,” says Karlsson.

While Lean Marine may have been flying under the radar since their incorporation some six years ago, uptake of their technology has been rapid. Since 2012, Lean Marine has installed FuelOpt on nearly 100 vessels, with the milestone 100th installation due to take place during 2018.

The success to-date, Karlsson says, is due to the technology’s ability to deliver direct and tangible results of fuel saving. Not only has the company welcomed new orders of their technology, returning customers demanding fleet-wide installations have been received with increasing frequency.

Bergen-based chemical tanker owner/operators Rederiet Stenersen, have reaped fuel saving success from the FuelOpt system which was installed on across their entire fleet comprising tankers already efficient by design.

John Stenersen, director of Rederi Stenersen says: “Simply, we’ve seen that the Fuel Optimization system has delivered the fuel savings promised. In addition to the automated fuel saving, we can now also follow up on our vessels using Lean Marine’s powerful Fleet Analytics tool.”

Stenersen has 15 vessels running with FuelOpt and Fleet Analytics. As the fuel optimization system is used all of the time during vessel transit, FuelOpt now has clocked up almost 4,000 days in operation across the Stenersen fleet. With a previously estimated saving potential of up to 2 tons per 24 hours, LeanMarine has, to date, helped Stenersen save in excess of 8,000 tons of fuel.

The Stenersen vessel Stenheim at berth in Vestmannaeyjar, Iceland

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