改变航道、航槽；划定、改动或撤销禁航区、抛泥区、水产养殖区、测速区、水上娱乐区；

Changing the sea route or trough; Demarcating, changing, or canceling a restricted navigation area, mud casting area, aquatics breeding area, speed testing area, or water entertainment area;

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本实用新型是一种海、河港口用水上助航活节式灯桩。

The utility model relates to a free-floating light beacon of navigational aid on water in the sea, a river, or a harbor.

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