The Hydrographic Office carries out hydrographic surveys and produces bilingual nautical charts.

海 道测量和制作兼备中、英文的海图。

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With the establishment of the Hydrographic Office the British Navy had its own map department, engravers, and printing facilities.

随着水道测绘局的成立，英国海军有了自己的地图绘制部门、雕版工、印刷设备。

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With the establishment of the Hydrographic Office the British Navy had its own map department, engravers, and printing facilities.

随着水道测绘局的成立，英国海军有了自己的地图绘制部门、雕版工、印刷设备。

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