据统计船舶碰撞事故中50%以上是在雾航情况下发生的，因此，如何提高雾航安全是航海界普遍关心的问题。
According to statistics, 50 % of all collision accidents are taken place in fog. Therefore, how to improve the navigation safety in fog has attracted the common concerning of navigation circle.
据统计船舶碰撞事故中50%以上是在雾航情况下发生的，因此，如何提高雾航安全是航海界普遍关心的问题。
According to statistics, 50 % of all collision accidents are taken place in fog. Therefore, how to improve the navigation safety in fog has attracted the common concerning of navigation circle.
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