At 11.40pm on Sunday 14 April, travelling at over 20 knots (about 23 miles per hour), Titanic struck an iceberg. 

In less than 10 seconds her hull was ripped opened below the waterline for a length of 300 feet (91 metres). The tragedy was not so much that she sank but that there were not enough lifeboats to save all on board.  

Indeed, many passengers were reluctant to leave the ‘unsinkable’ Titanic, thinking that it was safer to stay on the ship, rather than risk going on the lifeboats.