 Once detached from the glaciers, icebergs are transported southward through the Davis Strait by the Labrador Current.Approximately 40,000 medium to large icebergs annually calve from Greenland glaciers, and depending on wind, and air and water temperature, between 400 and 800 of these go as far south as 48° north latitude (St. John's).Icebergs are most commonly seen in the waters off Newfoundland in the spring and early summer.