90% of an iceberg is underwater. Ships or any other type of boats sailing in very cold regions have the possibility of misjudging the size of an iceberg and hitting them. The ship can crash into an iceberg that creates a hole in the ship and floods everyone on the ship. Example: Titanic
It is beause they can sink ships.
1000
icebergs and reefs
they are detected by other ships, and then a message is passed onto other ships so the ships know to look out for iceburgs
It is beause they can sink ships.
3
Ships stay away from the bottom of Niagara Falls.
They learned that even "unsinkable" ships are not impervious to icebergs.
Quite a few but most notably the Titanic.
You may be thinking of icebergs.
icebergs
Ships were small.The raging seas. Winds and icebergs. Inidans that were sometimes violent