How much does it cost to insure against tragedy in the skies?

Discovered in the wreck of a British ship off the coast of Holland in 1859, Lloyd’s of London’s Lutine Bell was traditionally rung once for good news and twice for bad – when an insured vessel failed to turn up at its port of call. The idea was that underwriters would eventually find out whether the ship had arrived, or not, at the same time, preventing unscrupulous characters from passing on the risk to unknowing rivals.