Safety navigation should be borne in mind.
时刻牢记安全航行第一。
Ocean current exerts a great influence on ship navigation and sailing safety.
海流对船舶导航、航行安全影响较大。
They learn about everything from aircraft design and navigation to radio communications and safety.
他们学习飞机设计，导航，无线电通信及安全。
Maritime Navigation Aid System is the important part of Maritime Traffic Safety Guarantee System.
海上航标系统是海上交通安全保障体系的重要组成部分。
Maritime Navigation Aid System is an important part of Maritime Traffic Safety Guarantee System.
海上航标系统是海上交通安全保障体系的重要组成部分。
Maritime Navigation Aid System is an important part of Maritime Traffic Safety Guarantee System.
海上航标系统是海上交通安全保障体系的重要组成部分。
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