Despite more than 500 books on the subject, plus a billion dollar-grossing James Cameron film, the public preoccupation with the "unsinkable" ocean liner that did, in fact, sink in the North Atlantic on her maiden voyage in 1912 shows no signs of abating. Two-part British documentary "Titanic in Colour" aims to explore maritime's greatest mystery. In color.

Here's how to watch "Titanic in Colour" online, from anywhere with a VPN – and potentially for free. There is some sleight of hand at work here with a lot of the interior footage being from the Titanic's sister ship, the Olympic, but still enough top drawer TV documentary-making to make the whole package worth watching. There are plenty of gems: for example, did you know that the White Star Line spent two hours talking about the type of carpets to have onboard and just 15 minutes on the lifeboats? The real worth of "Titanic in Colour", however, lies in the attempts to place the doomed vessel within its fascinating socio-economic and political context, as Britain passed from the Victorian to the Edwardian age just before World War One.

There are also echoes of Irish independence surrounding the Belfast-built craft and concerns of growing anti-imperial sentiment. The Titanic was always more than just an ocean-going liner and perhaps that is why she will never be forgotten. Here's where to watch "Titanic in Colour" online and from wherever you are.

Watch "Titanic in Colour" free online in the U.K. Viewers in the U.

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