本仪器为航海人员之测量绘制海图时辅助工具。

This equipment is used as an auxiliary tool for drawing chart for the seaman.

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需要由有献身精神的军官组成精英团队。于是赫德逐渐组织起一群有科学精神、作风严谨的军官来担起英国的海图绘制大业。

An elite corps of dedicated officers was needed, and Hurd slowly put together a group of scientific and mathematical officers to carry out Britain's chart making endeavors.

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二次考察的任务是继续南美的海图绘制工作。以及记录环球里程时刻数据链。

The orders for the next survey were to continue the charting work in South America, as well as run a chain of chronometric readings around the globe.

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