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http://www.dailymail.co.uk/sciencete...ank-liner.html
in their book What Really Sank The Titanic, the metal experts contend the vessel’s manufacturer, Harland and Wolff, was under great pressure to secure enough iron to make three million rivets to stitch the ship’s metal plates.
In the rush to beat competition from Cunard, the White Star liner was supplied with a vessel that was made using substandard materials.
McCarty and Foecke tested 48 rivets recovered from the wreck and found they had high levels of slag, a result of smelting that can make the iron brittle. If put under intense pressure, the rivets made from it would have been liable to splinter.
Dr Corfield said: ‘Foecke and McCarty found that the rivets that held the mild-steel plates of the Titanic’s hull together were not of uniform composition or quality and had not been inserted in a uniform fashion.
‘Specifically, Foecke and McCarty found that the rivets at the front and rear fifths of the Titanic were made only of ‘best’ quality iron, not ‘best-best’, and had been inserted by hand.
‘The reason for this was that, at the time of the Titanic’s construction, the hydraulic presses used to insert the rivets used in the middle three fifths of the ship could not be operated where the curvature of the hull was too acute (i.e. at bow and stern).’
Titanic was designed to stay afloat if up to four of its sealed compartments were flooded. But so many of the rivets popped along the starboard side of the ship that a fifth compartment flooded, condemning the vessel to the depths.
The Oxford based aithor said James Cameron, director of the film Titanic, seems clear it was the ‘rivets that were at fault’.
He said: ‘If you look at the relevant section of his film, at about 100 minutes in, you will see the bulkheads being split asunder along the line of rivets, which pop like champagne corks into the interior of the vessel.’ This sequence is ‘spot on in terms of accuracy’.
Dr Corfield says as well as the actual make-up of the ship, the climate thousands of miles away from where the ship actually sunk may have had a hand in events.
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