SRT #24 - 18,000 箱位船即将面世 2010.05.16

2011-05-17 23:11  浏览次数 95

18,000 箱位船即将面世              


Marine Log 月刊 2011.02.11     马士基公司已向韩国大宇造船厂订造1018,000箱位船, 另加  意想20. 每艘造价2亿美元交船期从2013 年开始到2015. 这类新船的到来将会重写世界货箱运输方式和费用. ( 1 to 4).


这类新船名为 3 E , 或叫“Malaccamax” 因它是可以通过马六甲海峽(水深21)最大的船.   

              Economy of scale

              Energy efficiency

              Environmentally improved

新船的dimensions :

              LOA              400.0

              Beam              59.0

              Height             73.0

              Draft               15.5

              Speed             23.0

              D/W         20万吨

              Horsepower    86000

为了减轻船的吃水, 主机将由一部16个汽缸改为2MAN 7个汽缸 with long stroke (1080mm), 螺旋叶直径为4 9.8米直径车叶, 安装于2skeg之上. ( 5 & 6).


这种新主机不但可减少20% 排炭, 并可在 “slow steaming”时减低相当可观之燃料:

         时速 22.5节时可减        20%

                             20.0        37%

                             17.5        50%

Maersk Line has ordered 10 of the record breaking 18,000 TEU container ships from Daewoo Shipbuilding & Marine Engineering Co., Ltd., Korea for delivery 2013 to 2015.There is an option for a further 20 vessels.

Ships of this size, sometimes referred to as “Malaccamax” have been talked about for more than ten years and rumours of the Maersk order have abounded in recent months. Malaccamax refers to the largest ships able to negotiate the Straits of Malacca. Reduced draft was one of several reasons to adopt a twin island design with twin engines powering two smaller diameter propellers rather than one large one (requiring greater depth of water).

This new, giant container vessel class will be known as Triple-E, based on the three main purposes for their creation: Economy of scale, Energy efficiency, Environmentally improved. The new class will have 16 per cent more capacity than Maersk’s present largest Emma Maersk ‘PS Class’ ships. Contributing to the larger container capacity is positioning the engines further aft rather than midships. The dimensions of the new Class’s  LOA 400m,beam 59 m and height 73 m.

The Triple-E will produce 20 percent less CO2 per container moved compared to Emma Maersk and 50 percent less than the industry average on the Asia-Europe trade lane. In addition, it will consume approximately 35 percent less fuel per container than the 13,100 TEU vessels being delivered to other container shipping lines in the next few years, also for Asia-Europe service.

The Triple-E has a twin skeg (two-engine, two propeller) propulsion system. The top speed was capped at 23 knots, two knots lower than “Emma Mærsk”'s top speed. This meant a power requirement of only 65-70 megawatts compared to Emma's 80 megawatts – a 19 percent reduction. A slower max speed also enabled Maersk Line to consider "ultra-long stroke"engines that could operate at slower revolutions, leading in turn to a demand for a larger propeller diameter. However, the size of the propeller is limited by the dimensions of the vessel and the available space beneath the keel. To mitigate these restrictions and achieve the desired efficiency, Maersk Line research determined that a two engine/two propeller "twin skeg" system was superior to the one engine/propeller setup.

The Triple-E's two propellers are 9.8 m in diameter with 4 blades each, compared to Emma's single propeller, which is 9.6 metres in diameter with 6 blades. The combined diameter of the propellers provides greater pushing power in the water and the fewer number of blades creates less resistance. In all, the Triple-E's twin-skeg propulsion system consumes approximately 4 percent less energy than “Emma Mærsk”'s single engine/single propeller propulsion system.

An advanced waste heat recovery system captures and reuses energy from the engines' exhaust gas for extra propulsion with less fuel consumption.

The ship's two MAN Diesel engines will each deliver 43,000 hp and fuel consumption will be 168 grams bunker oil per kilowatt hour produced .

To reduce the environmental impact of the vessels beyond their lifecycle, Maersk Line is setting a new standard for the way vessels are recycled. All the materials used to build the Triple-E class will be documented and mapped in the vessel's '"cradle-to-cradle” passport."This means that when the vessel is retired from service, this document will ensure that all materials can be reused, recycled or disposed of in the safest, most efficient manner.

February 21, 2011

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