Includes bibliographical references and index.

Coast Guard polar icebreaker modernization : background issues and options for Congress / Ronald O'Rourke -- U.S. House of Representatives, Committee on Transportation and Infrastructure, Washington, DC--July 15, 2008 / Subcommittee on Coast Guard and Maritime Transportation -- Statement of the Honorable James L. Oberstar, Subcommittee on the Coast Guard and Maritime Transportation hearing on "Coast Guard icebreaking," July 16, 2008 -- Testimony of Dr. Arden L. Bement, Jr., director, National Science Foundation, before the House Committee on Transportation and Infrastructure, Subcommittee on Coast Guard and Maritime Transportation, July 16, 2008 -- Dept. of Homeland Security, U.S. Coast Guard, statement of Admiral Thad W. Allen, commandment on Coast Guard icebreaking, before the Subcommittee on Coast Guard and Maritime Transportation, Committee on Transportation and Infrastructure, U.S. House of Representatives, July 16, 2008 -- Testimony of Mead Treadwell, chair, U.S. Arctic Research Commission, before the Subcommittee on Coast Guard and Maritime Transportation--July 16, 2008.