索马里还有着非洲大陆最长的海岸线，临近通讯海底主电缆。
Somalia also has the longest coastline on mainland Africa, close to major sea lines of communication.
因此，大多数海底运载工具，特别是无人深水潜艇，要在很长的电缆终端进行通讯。
Thus, most undersea vehicles — particularly ROVs — operate at the end of long ropes.
1866年的今天，跨大西洋海底电缆成功完工，从此令跨大西洋间的电报通讯首次成为可能。
1866 - the Atlantic Cable is successfully completed, allowing transatlantic telegraph communication for the first time.
1866年的今天，跨大西洋海底电缆成功完工，从此令跨大西洋间的电报通讯首次成为可能。
1866 - the Atlantic Cable is successfully completed, allowing transatlantic telegraph communication for the first time.
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