斯德哥尔摩号沿着斯匹次卑尔根群岛西侧向北航行，雷达屏幕中心只有一个孤独的三角形，自从熊岛以来我们没有看见任何船只。
A solitary triangle in the centre of an icebound radar screen, the Stockholm advanced north along the west coast of Spitsbergen.
这艘船借助于雷达在浓雾中航行。
ARPA(自动雷达标绘仪)是当今船舶导航避碰主要的辅助设备，如果使用得当，无疑对船舶航行安全将起到积极的作用。
ARPA (Automatic Radar Plotting Aids) is a ship's main assistant equipments for navigation and collision. If it is to be used correctly, no doubt it will make active effect to ship's navigation.
本周前期，美国海军宣布其四艘REMUS 100无人水下航行器执行作业过程中脱离雷达并停止回复指令。
Earlier this week, the US Navy announced that four of their " REMUS 100" unmanned underwater vehicles sailed off-radar and stopped responding to commands.
对交通事故，特别是雷达覆盖区以外的事故，通过对AIS数据和航行轨迹的回放、分析和模拟实验，可以得到有价值的结论；
The valuable conclusion can be achieved by means of analyzing the AIS data, playback the ship trajectory and simulation experiments, especially to the accidents beyond the radar coverage.
雷达，声纳和精确的电脑制图有助于确保游轮在正确的航线上航行。
Radar, sonar, and precise computer-generated graphics help keep the vessel on course. Now the ships are becoming more and more like airplane cockpits.
寻找提高船用雷达目标检测能力的有效方法在减小事故发生几率、提高船舶航行安全方面具有重要的现实意义。
Searching for an effective method to improve the target detection capability has great actual significance in reducing the accident rate and improving the safety of ship navigation.
但是两者单独使用有一定的局限性，为了更好的提高海上航行安全，实现雷达图像与电子海图叠加显示是必要的。
However, both alone has some limitations, in order to enhance the safety of maritime navigation, it is necessary to radar images superimposed display on the electronic navigation chart.
STCW公约明确要求500总吨或以上船舶，负责航行值班的高级船员能使用雷达和自动雷达标绘仪保持安全航行。
STCW definitely order that the officer of watch onboard a ship of more than 500 ton must have the ability to use radar and ARPA to keep the voyage in safe stage.
根据中国船级社颁发的《船载航行数据记录仪检验指南》中有关雷达图像的测试标准，对雷达图像压缩系统进行测试，测试结果表明该系统完全达到了国际标准。
It has been tested according to the test standard of radar images in "voyage data recorder test guide" issued by CCS. The testing results show that the recording card satisfy international standard.
根据中国船级社颁发的《船载航行数据记录仪检验指南》中有关雷达图像的测试标准，对雷达图像压缩系统进行测试，测试结果表明该系统完全达到了国际标准。
It has been tested according to the test standard of radar images in "voyage data recorder test guide" issued by CCS. The testing results show that the recording card satisfy international standard.
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