JUNEAU, Alaska - The Coast Guard Cutter Polar Sea, the world's most powerful non-nuclear icebreaker, maneuvers in Gastineau Channel as the crew prepares mooring lines which will secure the cutter to the South Franklin Pier Wednesday, Nov. 18, 2009. The Polar Sea has made 18 voyages to the Arctic Ocean and the cutter's awards include six Coast Guard Unit Commendations, the Navy Meritorious Unit Commendation, the Navy Arctic Service Medal, the Special Operations Medal and the Canadian Coast Guard Commissioner's Commendation.U.S. Coast Guard photo by Petty Officer 3rd Class Walter Shinn.