In 2016, the decision was made to upgrade the capacity of the ships and make them more efficient at lower speeds. The capacity increase was done by increasing the height of the lashing bridges and adding an extra floor to the accommodation block. This allows the containers to be stacked higher on deck. To help maintain stability, flume tanks were added on the sides of the accommodation block. The work was carried out at Qingdao Beihai Shipbuilding Heavy Industry's shipyard in China.5
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