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This isn't new information, my granddad told me this years ago. Basically the rivets were substandard as the ship was "unsinkable" so they didn't think they had to bother. That was also why they didn't have enough lifeboats for all the passengers.
 
That was also why they didn't have enough lifeboats for all the passengers.

Actually they had more lifeboat spaces than was required.

Britannica Online said:
The Titanic had only 1,178 lifeboat spaces for the 2,224 persons aboard, and many of the lifeboats were lowered into the water only partly filled with passengers, thus leaving many people stranded on the sinking ship. As a result, about 1,500 people died. (Although the facilities proved to be inadequate, the Titanic had actually exceeded the lifeboat requirements of the British Board of Trade's regulations, which had been formulated for much smaller ships.)

http://www.britannica.com/eb/article-9072642/Titanic
 
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