Download or read book Polar Icebreakers in a Changing World written by National Research Council and published by National Academies Press. This book was released on 2007-03-14 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: The United States has enduring national and strategic interests in the polar regions, including citizens living above the Arctic circle and three year-round scientific stations in the Antarctic. Polar icebreaking ships are needed to access both regions. Over the past several decades, the U.S. government has supported a fleet of four icebreakersâ€"three multi-mission U.S. Coast Guard ships (the POLAR SEA, POLAR STAR, and HEALY) and the National Science Foundation's PALMER, which is dedicated solely to scientific research. Today, the POLAR STAR and the POLAR SEA are at the end of their service lives, and a lack of funds and no plans for an extension of the program has put U.S. icebreaking capability at risk. This report concludes that the United States should continue to support its interests in the Arctic and Antarctic for multiple missions, including maintaining leadership in polar science. The report recommends that the United States immediately program, budget, design, and construct two new polar icebreakers to be operated by the U.S. Coast Guard. The POLAR SEA should remain mission capable and the POLAR STAR should remain available for reactivation until the new polar icebreakers enter service. The U.S. Coast Guard should be provided sufficient operations and maintenance budget to support an increased, regular, and influential presence in the Arctic, with support from other agencies. The report also calls for a Presidential Decision Directive to clearly align agency responsibilities and budgetary authorities.

Download or read book MARAD written by United States. Maritime Administration and published by . This book was released on 1984 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Coast Guard Miscellaneous Domestic and Polar ice breaking operations written by United States. Congress. House. Committee on Merchant Marine and Fisheries. Subcommittee on Coast Guard and Navigation and published by . This book was released on 1983 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Model Tests in Ice on Canadian Coast Guard R Class Ice Breaker written by Kjell Herfjord and published by . This book was released on 1982 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes towing tests in ice with the Canadian Coast R-Class Icebreaker. The results indicate that the flexural strength of ice has very little influence on the ice resistance of this particular icebreaker.

Download or read book Propulsion Tests in Level Ice on a Model of a 140 ft WTGB Icebreaker written by Jean-Claude Tatinclaux and published by . This book was released on 1985 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results of propulsion tests in level ice on a model of the WTGB 140-ft. Great Lakes icebreaker are presented and compared to available full-scale data. In spite of the difficulties in exactly modeling full-scale conditions, the predictions based on the model test results of the ship performance compared reasonably well to those measured during full-scale trials. Several possible sources of errors are identified. In particular, duplication at the model scale of the ship hull's ice friction coefficient is considered to be critical in determining the ice resistance and the corresponding propulsion characteristics, namely propeller speed, thrust and torque. Keywords: Coast Guard ships; Ship models; Icebreakers; and Model tests.

Download or read book Monthly Catalogue United States Public Documents written by and published by . This book was released on 1984 with total page 1252 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1982 with total page 1060 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Coast Guard Engineer s Digest written by and published by . This book was released on 1948 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the Metallurgical Society of the Canadian Institute of Mining and Metallurgy written by G. E. Ruddle and published by Elsevier. This book was released on 2016-09-20 with total page 405 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains 27 papers covering the advances being made in the field of accelerated cooling technology for hot-rolled steel products. Main topics covered include accelerated cooling applications to plate, strip, bars and shapes; system design; process modelling and effects on transformation; microstucture and mechanical properties, providing international steel industry R & D personnel and metallurgical research groups with a state-of-the-art update of this rapidly developing technology.

Download or read book Selection and Use of Wear Tests for Coatings written by Raymond George Bayer and published by ASTM International. This book was released on 1982 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt: The selection and use of wear tests for coatings are discussed. Coated materials are vastly different and more complicated than uncoated or monolithic materials. It is therefore necessary to characterize the coating and the coating/substrate interface in terms of physicochemical and mechanical properties. Wear is a multi-faceted phenomena. Various tests used to study the wear properties of coatings are described. They include tests for adhesive wear, abrasive wear, impact erosion wear, and fatigue wear.

Download or read book Information on the Coast Guard s Polar class Icebreaker Ship Construction Program and Operational Testing written by United States. General Accounting Office and published by . This book was released on 1976 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Marine Rudders and Control Surfaces written by Anthony F. Molland and published by Elsevier. This book was released on 2011-02-24 with total page 451 pages. Available in PDF, EPUB and Kindle. Book excerpt: Marine Rudders and Control Surfaces guides naval architects from the first principles of the physics of control surface operation, to the use of experimental and empirical data and applied computational fluid dynamic modelling of rudders and control surfaces.The empirical and theoretical methods applied to control surface design are described in depth and their use explained through application to particular cases. The design procedures are complemented with a number of worked practical examples of rudder and control surface design.• The only text dedicated to marine control surface design• Provides experimental, theoretical and applied design information valuable for practising engineers, designers and students• Accompanied by an online extensive experimental database together with software for theoreticalpredictions and design development

Download or read book Coast Guard Bulletin written by and published by . This book was released on 1942 with total page 1012 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Great Lakes St Lawrence Seaway Navigation Season Extension Program FY1979 written by and published by . This book was released on 1978 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hearings written by United States. Congress. House and published by . This book was released on 1948 with total page 2220 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Annual Report of the Federal Maritime Commission written by United States. Federal Maritime Commission and published by . This book was released on 1982 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book MARAD the Annual Report of the Maritime Administration written by United States. Maritime Administration and published by . This book was released on 1981 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt: