Set of keys from the Titanic
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Buying Titanic memorabilia 'is not weird'

11 April 2012 Last updated at 06:49 BST

The cruise ship retracing the route of the ill-fated liner Titanic is continuing its journey to the site where the ship sank.

On board, passengers are lining up to buy plenty of collectors' items.

One auctionee argued that the impulse to buy Titanic memorabilia was "far from weird".

The BBC's John Kay reports.