2 - the number of engines used to power the ship, the largest ever built at 4 decks high.
The Construction of the White Star Dock Southampton
A century of baptisms and Sunday socials laid down strong community roots.
The ship was equipped with her own waterworks, capable of heating and pumping water to all parts of the vessel via a complex network of pipes and valves. The main water supply was taken aboard while Titanic was in port, but in an emergency the ship could also distil fresh water from seawater, though this was not a straightforward process as the distillation plant quickly became clogged by salt deposits. A network of insulated ducts conveyed warm air, driven by electric fans, around the ship, and First Class cabins were fitted with additional electric heaters. 
In 1898 (14 years prior to the Titanic tragedy), Morgan Robertson wrote a novel called Futility. This fictitious novel was about the largest ship ...
Douglas Main loves the weird and wonderful world of science, digging into amazing Planet Earth discoveries and wacky animal findings (from marsupials mating themselves to death to zombie worms to tear-drinking butterflies) for Live Science. Follow Doug on Google+ .