article_snippet.sent: In November 1942,  the unguarded SS City of Cairo was sunk by a German U-boat while carrying 296 civilians and cargo that included 100 tons of silver.
article_snippet.sent: the unguarded SS City of Cairo Cairo was bringing silver rupees from India to England as part of the war effort.
article_snippet.sent: A sub found the unguarded SS City of Cairo Cairo split into two parts, buried by silt.
article_snippet.sent: The BBC reported the unguarded SS City of Cairo Cairo salvage operation was completed in September 2013, but the British government made Deep Ocean Search keep Deep Ocean Search secret until this week.