Climate change and air quality
World Innovation: CMA CGM first shipping company to choose liquefied natural gas for its biggest shipsNovember 7, 2017
Firmly committed to the protection of the environment, CMA CGM becomes the first shipping company in the world to equip its future giant containerships with engines using liquefied natural gas (LNG), a technological innovation for a drastic reduction of pollutant emissions.
Objective achieved: CMA CGM halved its carbon emissions per shipped container per km on its owned fleet.
As part of its environment policy, CMA CGM has committed to reduce its emissions (CO2, Sox…) in order to limit the impact of its activity on climate change.
“Within only 10 years, CMA CGM divided its CO2 emissions by two per shipped container per km on its owned fleet. ”
In 2005, a container equated to 116g of CO2 emitted per km, but thanks to various measures and technical innovations deployed by CMA CGM, these emission levels are now 60g of CO2 per km on owned vessels.
As for the most efficient ships, such as the CMA CGM BOUGAINVILLE, they show a performance of less than 35g of CO2 performance per km.
Following a 50% improvement in CO2 emission performance per container transported per kilometerbetween 2005 and 2015, CMA CGM set a new ambitious goal of -30% of CO2 per container transported by 2025. The Group has already reduced its CO2 emissions per container transported by 4% in 2016.
Technical innovations and measures to reduce carbon footprint
1. Eco-containers ; 2. Limited air polluants (NOX;SOX) ; 3. 24/7 Fleet Navigation Center (Routing and weather optimization ; Slow steaming) ; 4. Cargo hold bilge water holding tank ; 5. Optimized bulbous bow ; 6. Multichamber waste compactors, no incinerator, no waste at sea ; 7. Fast Oil Recovery System ; 8. Ultra low sulfur compliance ; 9. Optimized hull lines double hull protection ; 10. Tin-free antifouling coating ; 11. Grey waters tank ; 12. Electronically controlled engine, autotuning engine, self-adjusted engine ; 13. Additional bilge water tank ; 14. Water ballast treatment system chemical free ; 15. Air sealed stern tube ; 16. 0ptimized propellers ; 17. Twisted leading edge rudder with bulb ; 18. Alternative maritime power / shore power connection ;
In order to reach this 50% CO2 reduction objective, CMA CGM is relying on a modern fleet of giant container ships equipped with efficient technologies as well as experts constantly working on operational excellence, coming up with solutions such as the CMA CGM Fleet Navigation & Support Center or vessel’s speed reduction.
Vessel structure optimization
New bulbous bows improve hydrodynamics
The bulbous bow, located at the front of the vessel, plays an important role in the hull’s hydrodynamics as they strongly reduce the ship’s resistance to waves.
The shape of a bulbous bow is determined by the vessel speed. Today, with the usage of slow steaming, CMA CGM operates its ships at 16-18 knots and has bulbous bows whose shapes match these speeds. New vessels are conceived with that in mind while others are retrofitted to improve their hydrodynamics.
Benefits in terms of energy consumption are substantial (5-10% depending on the vessel). Consequently, CO2 emissions are reduced in similar proportions.
Just like bulbous bows, propellers’ efficiency depends on the vessel speed. Consequently, they are optimized by increasing their diameter, by removing a blade, etc.
A twisted leading edge rudder with bulb
A twisted leading edge rudder improves the hydrodynamics of the vessel (optimization of the water flow), and significantly reduces energy expenditures as well as CO2 emissions.
Using large-capacity vessels
By operating giant container ships such as the CMA CGM BOUGAINVILLE, CMA CGM is reducing its impact on climate change through economies of scale.
Using innovative technologies
Engines using liquefied natural gas (LNG)
As of November 7th, 2017, CMA CGM announced that it would equip its future larger vessels with engines using liquefied natural gas (LNG): a real technological breakthrough for the preservation of the environment. Indeed, LNG allows, compared to current ships using heavy fuel oil:
• up to 25% less CO2
• 99% less sulphur emissions
• 99% less particulate matters
• 85% less nitrogen oxides emissions
Moreover, the Energy Efficiency Design Index (EEDI), which measures a ship’s environmental footprint, indicates that the environmental footprint of vessels using LNG engines is improved by 20% compared to ships only propelled by fuel oil.
Electronic injection engine and exhaust by-pass system
This latest generation of engines considerably reduces consumption of fuel (-3% on average) and for oil (-25%).
The vessel’s design has been specifically adapted for slow-steaming by fitting the main engine with an exhaust by-pass system to improve energy efficiency at low loads, and thereby reducing fuel consumption by around 1.5% at slow speeds.
Cold-ironing, to suppress air emissions in ports
Cold-Ironing or AMP (Alternative Maritime power) is a system allowing vessels to connect to shore electrical power when docking.
The objective is to suppress harmful emissions produced by the ship’s diesel engines. Instead of using the ship’s electrical power supply, a ground source is used to power onboard equipment (lights, reefers, etc.)
Routes and speed optimized by the Fleet Navigation and Support Center
This center helps with the shipping route optimization, advising the right navigation speed, and thus helps reduces CMA CGM vessels’ energy consumption. This navigation center also ensures safety for the crew and the merchandise, which makes it a valuable asset for both the Group and its customers.