One thing I don't understand about Titanic?

While it was April, the North Atlantic is always a cold ocean; and the area where Titanic was is right where the Labrador Current sweeps down from Greenland and Labrador.....and April, when it has gotten a little warmer in the Arctic and icebergs have fallen off Greenland and been picked up by the Labrador Current, is the height of iceberg season. So an iceberg in the shipping lanes in April was a common occurrence; remember there was pack ice all over the area, which was why Californian was stopped for the night.......