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This is a list of icebreakers and other special icebreaking vessels (except cargo ships and tankers) capable of operating independently in ice-covered waters. Ships known to be in service are presented in bold .
An icebreaker is a brief facilitation exercise intended to help members of a group begin the process of working together or forming a team.They are commonly presented as games to "warm up" a group by helping members get to know each other and often focus on sharing personal information such as names or hobbies.
Prior to ocean-going ships, ice breaking technology was developed on inland canals and rivers using laborers with axes and hooks. The first recorded primitive icebreaker ship was a barge used by the Belgian town of Bruges in 1383 to help clear the town moat.
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Polar-class icebreakers USCGC Polar Star (WAGB-10), USCGC Polar Sea (WAGB-11) are heavy icebreakers operated by the United States Coast Guard (USCG). These cutters, specifically designed for icebreaking, have reinforced hulls, special icebreaking bows, and a system that allows rapid shifting of ballast to increase the effectiveness of their icebreaking.
USCGC Healy (WAGB-20) is the United States' largest and most technologically advanced icebreaker as well as the US Coast Guard's largest vessel. [1] She is classified as a medium icebreaker by the Coast Guard. [1]
The Ice Breaker Tournament (also called the Ice Breaker Invitational or the Ice Breaker Cup) is a college Division I men's ice hockey tournament played annually at the start of each season. [ 1 ] The tournament began play in 1997 as an exhibition [ 2 ] and was created as an early-season showcase for top-ranked teams from four separate conferences.
Friction between the ship and the ice is reduced by a polymer-paint coating at the level of the ice skirt. An air bubbling system helps ice breaking. Air can be forced under pressure from 2 metres (6 ft 7 in) above the keel from the bow to halfway down the ship.