| 摘要 |
A hopper barge comprising a hopper having at least one center keelson box and at least one bottom discharge opening closable by at least one swivelling hopper door, as well as a control mechanism for swivelling the hopper door, wherein the control mechanism can also impose a translatory movement on the hopper door between a lower end position and a higher position, in which the hopper door is at least substantially positioned within the center keelson box.
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