SS City of Cairo sunk by U-boat en route from Bombay to England in 1942 . 17,000ft after the of rupees belonging to the UK Treasury thought to be lost forever . Finally tracked down by British-led team using powerful sonar and robotics . Recovered from a depth of 17,000ft – some 4,500ft deeper than the Titanic .
SS City of Cairo sunk by U-boat en route from Bombay to England in 1942 . 100 tons of rupees belonging to the UK Treasury thought to be lost forever . Finally tracked down by British-led team using powerful sonar and robotics . Recovered from a depth of 17,000ft – some 4,500ft deeper than the Titanic .