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In July 1940, as war raged in Europe, a British naval vessel docked quietly in Halifax harbour.
The cargo was labelled as fish but was, in fact, gold and securities.
The ship was HMS Emerald, and it carried the first in a series of shipments transporting Britain's wealth to safety in Canada.
It was part of Operation Fish, a secret mission that would see Halifax play a key role in ensuring Britain's success in the Second World War.
By then, the Atlantic Ocean had already become a graveyard for hundreds o
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