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Typically, around 8/9 of the volume of an iceberg is under water, and that portion's shape can be difficult to surmise from looking at what is visible above the surface. This has led to the expression "tip of the iceberg", generally applied to a problem or difficulty, meaning that the problem is only a small manifestation of a larger trouble.

The mass can be very durable and can easily damage sheet metal. As a result of these factors, icebergs are considered extremely dangerous hazards to shipping. The most famous sinking from an iceberg collision was the destruction of the RMS Titanic on April 14, 1912.

The International Ice Patrol monitors the presence of icebergs in the northern Atlantic Ocean and reports their movements for safety purposes.

Iceberg - photomontage of what a whole iceberg might look like - photo

The Antarctic icebergs are monitored by the National Ice Center and are named. The NIC assigns each iceberg larger than 10  miles along at least one axis a name composed of a letter indicating its point of origin and a running number. The letters used are as follows:

• A – longitude 0° to 90° W ( Bellingshausen Sea , Weddell Sea)
• B – longitude 90° W to 180° ( Amundsen Sea, Eastern Ross SeaThe Ross Sea is a deep bay of the Southern Ocean in Antarctica between Victoria Land and Marie Byrd Land. It was discovered by James Ross in 1841. In the west of the Ross Sea is Ross Island with the Mt. Erebus volcano, in the east Roosevelt Island. The so)
• C – longitude 90° E to 180° (Western Ross Sea, Wilkesland )
• D – longitude 0° to 90° E ( Amery Ice Shelf , Eastern Weddell Sea)

1 See also

• IcebreakerMcMurdo Station, February 2002 An icebreaker is a special purpose ship designed to move through ice covered marine environments. These ships break ice by using their momentum and power to push the bow up on the ice. The weight of the ship causes the ice t
• Iceberg lettuceGarden lettuce Scientific classification Kingdom: Plantae Division: Magnoliophyta Class: Magnoliopsida Order: Asterales Family: Asteraceae Genus Lactuca Species sativa Binomial name Lactuca sativa Lettuce Lactuca sativa Asteraceae) is a temperate plant gr
• List of English words of German origin
• Images:

2 External links

• Iceberg gallery

Iceberg is also a fashion label.

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Topics: Iceberg Sea Ice Longitude Icebergs Water Weddell Larger Problem...

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IcebergAn iceberg berg is the German word for mountain is a large piece of ice that has broken off from a glacier or ice shelf and is floating in open water. Typically, around 8/9 of the volume of an iceberg is under water, and that portion's shape can be diffic Iceberg SlimIceberg Slim is the pen name of Robert Beck ( 1918 1992), an African American writer. Born into abject poverty, Beck quickly drifted into criminality, and became a pimp in the brutal Chicago underworld. It was during a 10 month prison sentence in solitary