第十四篇

Passage 14

For navigation，radar is of incredible value. It provides the navigator with his position，his distance from ships or obstructions nearby and other accurate information top revent collision and ensure the safety of the ship. Radar can display all objects within its working range clearly，either in clear weather or in thick fog. In addition，if the radar information is correctly interpreted，the navigator can easily work out the speed and direction of an approaching object and take proper measures to keep his ship from any danger.

Shore-based radar also plays an important role in shipping. If ship's radar is in trouble，the radar observer at the stations will use VHF radio to alert them to other traffic in the vicinity as well as to advise their position. Up to now，many radar surveillance systems have been installed in most large seaports. They are intended to smooth and control the flow of traffic to and from the harbor.

导航中，雷达是难以置信的价值。它提供了航海者与他的位置，他从附近的船舶或其他障碍物的距离，和其他准确的信息以防止碰撞，来确保船舶的安全。雷达可以清楚显示其工作范围内的所有对象，无论是在晴朗的天气或大雾。此外，如果雷达信息正确的诠释，航海者可以很容易地制定出一个接近物体的速度和方向，采取适当措施，以防止船的任何危险。

岸上的雷达也在航运中扮演重要的角色。如果船的雷达出现故障时，雷达观测站将利用甚高频电台，提醒他们在附近其他交通以及告知他们的位置。截至目前，许多雷达监测系统已安装在大多数大型港口。他们的目的是平稳和控制交通流，从海港。