Friday Find: The Hydrographer's bell

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It’s 1931 and you are a U.S. Coast and Geodetic Survey Corps officer on the USC&GSS Hydrographer. A bell clangs urgently, waking you from sleep. What could it mean?

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Friday Find: The Hydrographer's bell

1004) - Navy lists > Quarterly > 1915 > July - British Military

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Friday Find: The Hydrographer's bell