Written by the International Ice Patrol.

Icebergs, bergy bits or growlers. Whatever you call them, these massive chunks of ice – some the size of a small country – all pose a threat for ships transiting the North Atlantic. But thanks to the U.S. Coast Guard’s International Ice Patrol and their partners, mariners will have the information they need to stay safe, and out of harm’s way.

A Coast Guard airplane flies over an iceberg during a reconnaissance flight. (U.S. Coast Guard photo)

The U.S. Coast Guard’s International Ice Patrol took over the ice-reporting responsibility from the Canadian Ice Service on Wednesday, officially marking the start of the 2012 ice season. The Ice Patrol is now responsible for issuing daily iceberg analysis products, which provides key safety information for mariners transiting in Atlantic waters.

Prior to 2011, the Canadian Ice Service published a daily iceberg analysis for Canadian coastal waters and the International Ice Patrol published a seasonal daily iceberg warning when icebergs threatened transatlantic shipping lanes. Last year, the services combined efforts to produce one daily iceberg analysis to be issued by Ice Patrol during their traditional season – February through July – and to be issued by the Canadian Ice Service for the remainder of the year.

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