Ships (Mighty Machines)[मृत कड़ियाँ], Ian Graham, pp. 22, Black Rabbit Books, 2006, ISBN 978-1-58340-921-3, ... Ships stay away from ice because ice can punch a hole in the hull. Ships can also be surrounded and crushed by ice. Ice breakers get through ice because they have three things that other ships don't have - a very strong hull, extra-powerful engines, and the right shape to break ice ...
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Ships (Mighty Machines)[मृत कड़ियाँ], Ian Graham, pp. 22, Black Rabbit Books, 2006, ISBN 978-1-58340-921-3, ... Ships stay away from ice because ice can punch a hole in the hull. Ships can also be surrounded and crushed by ice. Ice breakers get through ice because they have three things that other ships don't have - a very strong hull, extra-powerful engines, and the right shape to break ice ...
