N.G. - Drain the Oceans Series 1 Ultimate Battleships (2018) [Documentaries]

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N.G. - Drain the Oceans Series 1 Ultimate Battleships (2018)

N.G. - Drain the Oceans Series 1 Ultimate Battleships (2018)

Drain The Oceans Series 1 Ultimate Battleships

The hidden secrets of WWI's powerful weapons are revealed by draining the North Sea.

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Hi-Def, Technology, Maritime, Military, WWI, National Geography, 2018, July 2018, Documentaries