船舶普遍使用的压载水，是现代远洋船舶航海安全和高效营运的保证。
Ballast water can insure the ocean liners voyage safety and high transport efficiency.
卫星导航技术及其它高新科技被广泛应用，使得人们顾虑的航海安全问题得以全面的保障。
The application of the Global Navigation Satellite System and other advanced technologies has relieved the concerns with the maritime security.
或许最有趣的频率这里是518 千赫， 被使用为海安全和航海信息传输通过FSK 。
Perhaps the most interesting frequency here is 518 kHz, used for transmission of maritime safety and navigation information via FSK.
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