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ECOTECHNOLOGY ECONOMY // FUEL-CONSUMPTIONGREEN FEATURES ECO FOOTPRINT // ENERGY EFFICIENT DESIGN INDEXINVENTORY OF HAZARDOUS MATERIALS S E E M P
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ECO FOOTPRINT SAVER Fin
The GreenFleet incorporates the innovative Samsung Vibration and Energy Reduction Fin, which reduces pressure contours and improves streamline while also reducing form drag. In other words, the vessels sail smoother in the water with less resistance, increasing efficiency.
The SAVER Fin increases speed and power performance by up to 5%. In addition, it reduces hull vibration by 30%.
Samsung Asymmetric Rudder Bulb SARB
The SARB, a new concept in rudder design, reduces rudder resistance and duct thrust and increases propeller efficiency. It also reduces kinetic energy loss and, because of Hub vortex reduction, increases propeller efficiency. SARB results in a more uniform propeller slip stream and decreased water speed. Overall results translate into a more efficient vessel. These changes alone provide a power savings of 1.5-2%. The GreenFleet enjoys a savings of between 392-522 kilograms of fuel every day. At the same time, CO2 emissions are also reduced daily by 1220 to 1625 kg.
New technology is rapidly boosting the efficiency and life of lighting systems. The GreenFleet uses advanced fluorescent lighting that converts more electricity to light (400% more). Plus, the light is more evenly distributed and glare is reduced.
Especially important is the reduction in heat generation. The new lighting gives off 2/3 to ¾ less heat, significantly reducing the energy consumption and cost of on board air conditioning—as well as the space needed for air con equipment.
Protected Oil Tanks
The Aegean GreenFleet has all its oil tanks located away from the ships side or bottom shell plating, an added precaution on these vessels. Adding protection to the oil tanks adds protection to the environment.DIST Suitability.
The diesel engines, auxiliary boilers, incinerators, and IG (inert gas) systems of GreenFleet vessels are suitable for operation on distillate fuels. This means that as vessels enter ports, they are able to effortlessly switch to a fuel that suits the local environment.
OLD VESSELS 30-35 TONS PER DAYGREEN FLEET 23.1 TONS PER DAY20 - 30%LESS FUEL OIL
The GreenFleet reduces main engine fuel consumption—a lot. Last generation vessels consume an average of 34.59 tons per day. The next generation Aegean GreenFleet consumes 23-24 tons. More than 10 tons of fuel oil less PER DAY! That’s 30% less fuel oil. In fact, the GreenFleet represents the best consumption on the market today.
Main engine, in combination with a new propeller, achieves economy via optimized managing speed end load of + / - 80%.
Newest electronically controlled main engine with de-ratting set up achieves better results with less fuel.
Saver Fins, on the ship’s hull, reduce pressure contours, improve streamline resulting in reduced form drag.
ECO Hull Lines reduce form drag and vessels sail smoother in the water, with less resistance—and with no reduction of cargo capacity.
New Antifouling utilizes a special and unique polymer to deliver an ultra-smooth surface and self-polishing performance, resulting in lower friction.
Asymmetric Rudder Bulb reduces rudder resistance and duct thrust and increases propeller efficiency. Also reduces kinetic energy loss and increases propeller efficiency.
- 4-6%Newest vessel optimised speed out load of +/- 80% (in combination with more efficient propeller)
- 4-7% Newest model of electronically controlled main engine with de-ratting set up
- 3.5-4% Save fins
- 3.5-5% ECO Hull Lines
- 3-5% Unique Antifouling
- 1.5-2% Asymmentric Rudder Bulb
Aegean’s GreenFleet vessels are built only with the most environmentally friendly materials, ensuring safe and eco-sensitive construction. And for the end of each ship’s service, construction materials are designed to be recycled to the greatest extent possible. What’s more, each vessel carries an Inventory of Hazardous Materials, so that at the time of decommissioning, the end of life ship is fully prepared for the safest and most effective recycling—to be done only at certified recycling facilities.
The EEDI, a design index to control CO2 emissions from ships, is an important new milestone in shipbuilding. The EEDI required minimum emissions for the GreenFleet class is 6.156 grams CO2/tonne—nautical mile. The first vessel of Aegean’s GreenFleet, M/T Green Planet, has achieved 4.347 grams CO2/tonne—nautical mile, 29.38% better than the minimum standard, placing it years ahead of forthcoming regulations. And of course fewer emissions translate into less fuel oil consumption. At almost 30%, that’s considerable.
Aegean’s Ship Energy Efficiency Management Plan (SEEMP) is one of most rigorous in the industry. And with the GreenFleet, it’s about to significantly improve. Energy efficiency is a win-win arrangement. Better energy efficiency means lower costs and higher returns, less negative environmental damage and more positive impact on our marine ecosystem.