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1 Introduction
Pages 13-18

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From page 13...
... The United States has the Ross Ice Shelf to McMurdo Station (sometimes as long a stated national interest in shaping international policy re- as 80 miles, Box 1.1) ; they groom the channel to keep it garding the Antarctic continent and its surrounding waters.
From page 14...
... Due to the aging core systems, a regular and fully funded repair and maintenance schedule would keep the Polar class ships mission capable for only several more years, although this may provide a bridge to a long-term solution. The decrease in summer Arctic sea-ice extent implies the Department of Defense, and scientific research.
From page 15...
... Coast Guard to NSF, which was in- sions. Although the HEALY was sent to McMurdo Sound in tended to offset all direct costs associated with the polar early 2003 to assist the POLAR SEA with break-in operaicebreaking program, including personnel, training, opera- tions, HEALY's lower maximum power and lack of maneution, and maintenance.
From page 16...
... presence in polar regions. The cluding national defense, homeland security, support of eco- United States has important foreign policy as well as research nomic activity, law enforcement, search and rescue, envi- interests in both polar regions and that asserting those inter
From page 17...
... polar icebreakers in supporting U.S. strategic missions the three icebreaking ships, the two most capable of which and interests in the polar regions.


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