航标是航道的基础助航设施，直接影响船舶的航行安全。
AtoN is the basic establishment of the sea-route for assisting navigation straightly effecting on the safety of shipping.
它不仅能够封冻港口、堵塞航道、中断交通运输，而且还能破坏港工设施，撞毁海上过往船只及海上结构物。
Not only can it freeze the port, block the sea channel, break off the transportation, it also can destroy the port installations and crash out ships.
内河航运基础设施中针对港口和航道的建设与维护的相关计划、行动纲要等政策进行介绍。
In the inland shipping infrastructure part, relevant plans, policies and the action platforms for port and waterway construction and maintenance were introduced.
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