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A new Antarctic research vessel to be chartered by the National Science Foundation was designed and is under construction by North American Shipbuilding, Inc., Larose, Louisiana. A full model test program was required by NSF to verify that the proposed, design would meet the vessel operational requirements. In particular, the ship is to break 3 ft (0.9 m) of ice at 3 kn (1.5 m/s) continuously and break through pressure ridges with a 6-ft (1.8-m) sail and a 20-ft (6. 1 -m) keel. Ice model tests were made in CRREL's ice towing tank. The test program included resistance and propulsion tests in level ice, tests in ridges and ramming tests in ice floes of up to 6 ft (1.83 m) in thickness. The test results described in the report indicate that the proposed ship design with 8.8 MW of power available at the propeller would meet or exceed all operational requirements in ice: the power needed to operate continuously in 3-ft first year level ice at 3 kn was estimated at 6.5 MW: the vessel was found to be able to ram through a 38-ft (11 -m) keel ridge; finally, when rammina in 6-ft thick level ice at an impact speed of 6 kn (3.1 m/s) at full power, the vessel was predicted to penetrate by about one-third of a ship length into the ice. Antarctica, Ice ridge, Model tests, Icebreaker, Level ice, Ships.
Consists largely of abstracts of articles and papers of interest to shipbuilders, ship owners and marine engineers.
This one-stop reference is a perfect resource for anyone interested in the North and South Poles, whether their interest relates to history, wildlife, or the geography of these regions in the news today. Global warming, a hot topic among scholars of geography and science, has led to increased interest in studying the earth's polar ice caps, which seem to be melting at an alarming rate. This accessible, two-volume encyclopedia lays a foundation for understanding global warming and other issues related to the North and South Poles. Approximately 350 alphabetically arranged, user-friendly entries treat key terms and topics, important expeditions, major figures, territorial disputes, and much more. Readers will find information on the explorations of Cook, Scott, Amundsen, and Peary; articles on humpback whales, penguins, and polar bears; and explanations of natural phenomena like the Aurora Australis and the polar night. Expedition tourism is covered, as is climate change. Ideal for high school and undergraduate students studying geography, social studies, history, and earth science, the encyclopedia will provide a better understanding of these remote and unfamiliar lands and their place in today's world.
Trends in the Analysis and Design of Marine Structures is a collection of the papers presented at MARSTRUCT 2019, the 7th International Conference on Marine Structures held in Dubrovnik, Croatia, 6-8 May 2019. The MARSTRUCT series of Conferences started in Glasgow, UK in 2007, the second event of the series having taken place in Lisbon, Portugal in March 2009, the third in Hamburg, Germany in March 2011, the fourth in Espoo, Finland in March 2013, the fifth in Southampton, UK in March 2015, and the sixth in Lisbon, Portugal in May 2017. This Conference series specialises in dealing with Ships and Offshore Structures, addressing topics in the fields of: - Methods and Tools for Loads and Load Effects - Methods and Tools for Strength Assessment - Experimental Analysis of Structures - Materials and Fabrication of Structures - Methods and Tools for Structural Design and Optimisation - Structural Reliability, Safety and Environmental Protection. Trends in the Analysis and Design of Marine Structures is an essential document for academics, engineers and all professionals involved in the area of analysis and design of Ships and Offshore Structures. About the series: The ‘Proceedings in Marine Technology and Ocean Engineering’ series is devoted to the publication of proceedings of peer-reviewed international conferences dealing with various aspects of ‘Marine Technology and Ocean Engineering’. The Series includes the proceedings of the following conferences: the International Maritime Association of the Mediterranean (IMAM) conferences, the Marine Structures (MARSTRUCT) conferences, the Renewable Energies Offshore (RENEW) conferences and the Maritime Technology (MARTECH) conferences. The ‘Marine Technology and Ocean Engineering’ series is also open to new conferences that cover topics on the sustainable exploration and exploitation of marine resources in various fields, such as maritime transport and ports, usage of the ocean including coastal areas, nautical activities, the exploration and exploitation of mineral resources, the protection of the marine environment and its resources, and risk analysis, safety and reliability. The aim of the series is to stimulate advanced education and training through the wide dissemination of the results of scientific research.