why arctic ocean is a grave to many ships
Arctic Ocean Icebergs occasionally break away from northern Ellesmere Island, and icebergs are formed from glaciers in western Greenland and extreme northeastern Canada. These icebergs pose a hazard to ships, of which the Titanic is one of the most famous. Permafrost is found on most islands. The ocean is virtually icelocked from October to June, and the superstructure of ships are subject to icing from October to May.[11] Before the advent of modern icebreakers, ships sailing the Arctic Ocean risked being trapped or crushed by sea ice (although the Baychimo drifted through the Arctic Ocean untended for decades despite these hazards).