40,000 - the approximate number of icebergs born each year along the coast of Greenland.
1 - 4% - the proportion of those icebergs that survive to reach shipping waters. They initially float north along Greenland's west coast before beginning their southward journey past the coastlines of Baffin Island, Labrador and Newfoundland, before passing through the gulf stream into the Atlantic past. Most do not make it this far, either getting caught en route or finally melting in the warm waters of the gulf stream.
300 - the approximate number of icebergs reaching the shipping lanes of the North Atlantic in April 1912, the largest number for around 50 years. The appearance of icebergs this far south can be highly erratic; for example in 2006 the International Ice Patrol (the monitoring team set up after the Titanic disaster) recorded no icebergs crossing south of latitude 48°N; in 2007 they recorded 324.
"We do not care anything for the heaviest storms in these big ships. It is fog that we fear. The big icebergs that drift into warmer water melt much more rapidly under water than on the surface, and sometimes a sharp, low reef extending two or three hundred feet beneath the sea is formed. If a vessel should run on one of these reefs half her bottom might be torn away." Captain Edward John Smith, Commander of Titanic.
10,000 years - the approximate age of the snow, in years, that made up the glacier that produced the Titanic iceberg.
2 years - the approximate time that the Titanic iceberg will have taken since its creation to reach the point of collision.
8 miles - the approximate distance the iceberg would have been traveling per day.
100 feet - the estimated height of the iceberg above water, as recounted by Titanic survivors.
1/10th - the amount of an iceberg's total mass that is typically visible above water.
30 seconds - the amount of time from the first sighting of the iceberg to the impact. See more on the timeline.
"Icebergs loomed up and fell astern and we never slackened. It was an anxious time with the Titanic's fateful experience very close in our minds. There were 700 souls on Carpathia and those lives as well as the survivors of the Titanic herself depended on the sudden turn of the wheel." Captain Arthur H Rostron, Commander of the Carpathia.
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