Considering the large vessels have big breadth and deep draft, the depth and the width of ports area are limited.
相对大型船舶船宽大、吃水深的特点，港口内一般水深相对较浅、宽度受限。
The ship that strictly forbids super breadth, extremely high and super draft enters that navigation canal and forbids the sail in night, with the plan navigation safety.
严禁超宽、超高、超吃水的船舶进入该航道，禁止夜航，以策航行安全。
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