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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]
When a ship becomes immobilized by ice, the icebreaker has to free it by breaking the ice surrounding the ship and, if necessary, open a safe passage through the ice field. In difficult ice conditions, the icebreaker can also tow the weakest ships. [11] Finnish icebreaker Otso escorting a merchant ship in the Baltic Sea
Because of the limitations of traditional propulsion systems, the double acting ship concept wasn't seriously considered until the development of electric podded propulsion units which combine the advantages of the diesel–electric powertrain, already widely used in icebreakers, with the excellent manoeuvrability of azimuth thrusters. [1]
Glacier was capable of breaking ice up to 20 feet (6.1 m) thick, and of continuous breaking of 4-foot (1.2 m) thick ice at 3 knots (5.6 km/h; 3.5 mph). Named for Glacier Bay , Alaska , USS Glacier was launched on 27 August 1954 at Ingalls Shipbuilding Corp., Pascagoula, Mississippi , sponsored by Mrs. Roscoe F. Good; and commissioned on 27 May ...
The icebreaker will also be fitted with an air bubbling system that provides hull lubrication and reduces ice friction during icebreaking operations. [ 4 ] For maneuvering at ports as well as stationkeeping capability in Sea State 5 and currents of up to 3 knots (5.6 km/h; 3.5 mph) in open water, Arpatuuq will also be fitted with two 1,900 kW ...
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If static force is applied to a sheet of ice it will flex slightly before suffering a catastrophic failure. Since the ice will bend slightly when any capable vehicle travels on ice-covered water, it follows that travelling at some critical speed may impose sufficient flexing of the ice sheet to cause resonance, and this may result in positive feedback effectively amplifying the oscillation ...
Nikki Glaser revealed the jokes she cut from the Golden Globes—including a wild one about Ben Affleck.