Emma Maersk / Container vessel specifications


Emma Maersk is a container ship of the A.P. Moller-Maersk Group. When she was launched, Emma Maersk became the largest container ship ever built, and as of 2007 the longest ship in use. The largest ship ever built was the supertanker Knock Nevis, but now she serves as a floating storage and offloading unit (FSO). Emma Maersk is able to carry around 11,000 TEU in the calculation of the Maersk company which is about 1,400 more containers than any other ship is capable of carrying.

Length overall (LOA)   1302' 6" (397 m)
Beam   183' 8" (56 m)
Gross   170,974 bt
Cargo capacity   15,000 TEU (1 TEU = 20 ft container)
Net   55,396 nt
Deadweight (DWT)   156,907 DWT
Power   80,080 kW (109,000 hp) Engine: Wartsila 14RT-Flex96c plus 40,000 hp from five Caterpillar 8M32
Speed   more than 25.5 knots, Cruise Speed - 31 mi/h
Crew   The ship has accommodation for 30 people, though the normal crew is only 13.
First Trip   Sept. 08, 2006
Construction cost   US $145,000,000+
Country of origin   Denmark


In common calculation, her cargo capacity is much bigger - between 13,500 and 14,500 TEU. The difference between the official and estimated number results from the fact that Maersk calculates the cargo capacity of a container ship by using the number of containers with a weight of 14 tons that can be carried on a vessel. For the Emma Maersk, this is 11,000 containers. Other companies calculate the cargo capacity of a ship according to the maximum number of containers that can be put on the ship, independent of the weight of the containers. This number is always greater than the number calculated by the Maersk company.

    Teu Capacity Scheme

Engine and environment

The Emma Maersk is powered by a Wartsila 14RT-Flex96c engine, currently the world's largest single diesel unit, weighing 2,300 tons and capable of 110,000 horsepower (82 MW). The ship has several features to protect the environment. This includes recycling the exhaust, mixed with fresh air, back into the engine for reuse. This not only increases efficiency by as much as 12% but also reduces engine emissions. Instead of biocides, used by much of the industry to keep barnacles off of the hull, a special silicone-based paint is used. This increases the ship's efficiency by reducing drag while also protecting the ocean from biocides that may leak. The silicone paint covering the part of the hull below the waterline is credited for lowering the water drag enough to economize 1200 tonnes of fuel per year.


Still, most of the megaships are built with a streamlined keel that allows them to reach nearly 30 miles an hour (compared with 40 mph for an aircraft carrier) and cross the Pacific Ocean in 12 days.

Ports are scrambling to handle the gargantuan ships. SSA Terminals, which loads and unloads ships in Long Beach, has used as many as six or seven cranes -- double the normal number -- on the megaships.

But there is so much cargo that crane operators can work at one hatch for an entire eight-hour shift, says John DiBernardo, an SSA vice president. To keep up with the growing ships, Long Beach Container Terminal has welded steel beams into the legs of its cranes to increase their height.

Maersk Line is one of the leading liner shipping companies in the world, serving customers all over the globe.

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