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Analysis of Radar Cross Section Assessment Methods And
Analysis of radar cross section assessment methods and parameters affecting it for surface ships Análisis de Métodos de Evaluación de la Sección Transversal de Radar y de los Parámetros que Inciden en Ella para Buques de Superficie Vladimir Díaz Charris 1 José Manuel Gómez Torres 2 Abstract This article presents an analysis of the different modeling methods for predicting the radar cross section of surface ships. In the analysis, we studied the effect of different factors in vessel construction regarding the amount of electromagnetic energy returning to a radar source, such as the handling of shapes, use of different materials, and vessel size. We can see the different evaluation methods of the radar cross section and the software tools available to determine an appropriate methodology for adoption by the Colombian Navy and their subsequent integration with the design process and optimization of warships. Key words: Radar Cross Section, RCS, vessels, RAM, absorbent, prediction, Navy. Resumen En este artículo se presenta un análisis de los diferentes métodos de modelado para la predicción de la sección transversal de radar (RCS) de buques de superficie. Dentro del análisis, se estudia el efecto de los diferentes factores constructivos del buque sobre la cantidad de energía electromagnética que regresa a una fuente de radar, como son el manejo de formas, el uso de diferentes materiales y el tamaño del buque. Se aprecian los diferentes métodos de evaluación de la sección transversal de radar y las herramientas de software disponibles con el fin de determinar una metodología adecuada para su adopción por parte de la Armada de Colombia, y su posterior integración con el proceso de diseño y optimización de buques de guerra. -
The Eighth to First Centuries Bc*
Stanisław Ducin Uniwersytet Marii Curie-Skłodowskiej, Lublin THE DEVELOPMENT OF TYPOLOGY OF WARSHIPS ... IN THE GREEK AND ROMAN WORLD THROUGHOUT THE EIGHTH TO FIRST CENTURIES BC* Despite the dynamic development of navigation and shipbuilding technologies throughout the ancient world, nowhere else did this phenomenon manifest itself as significantly as in the Greek world1. Century after century this area exerted a special influence on the development of Roman maritime arts, not only during the Roman Republic but even as late as the Roman Empire. The other important source of standards for the Romans to follow were the Etruscans, although their role in the work of introducing the descendants of Romulus onto the vast realm of the Mediterranean appears far more difficult to establish. The more so that un- like the Greek world, Etruscan navigation, and especially Etruscan shipbuilding skills and technologies, still remain a little-explored territory in the present day. In the Greek written sources, warships (long and narrow) first appeared as early as in the Homeric poems: the Iliad and the Odyssey, where they were pres- ent in different forms, from smaller ships propelled by twenty men to warships with 50 or even 100 oars2. The conventional and traditional author of the two works, Homer, in his descriptions of the seemingly Achaean warships, obvi- ously presents warships of the far later period than the events depicted, although he fails to mention the type of warship characteristic of the eight century BC: the triacontor, a ship, as the name suggests, with 30 oars, 15 per each side. De- scriptions in Homeric verses correlate surprisingly with the images of Greek warships presented on Greek Geometric pottery dating from the ninth to late * The article has been already published in Ancient shipbuilding, ed. -
2009-INA-Annual-0818-OPT.Pdf
Officers/Administration Nautical Archaeology James P. Delgado, Ph.D., President* Program Faculty, Cemal M. Pulak, Ph.D., Vice President Texas A&M University Kevin J. Crisman, Ph.D., Vice President Deborah N. Carlson, Ph.D. — Frederick Hanselmann, Field Archaeologist Dive Safety Officer Assistant Professor, Sara W. Chasity M. Hedlund, Office Manager and George O. Yamini Fellow Tamara Hebert, Lead Office Associate Tuba Ekmekçi, Director, Bodrum Research Center Luis Filipe Vieira de Castro, Ph.D. Özlem Doğan, Finance Manager, Bodrum Research Center Assistant Professor, Frederick R. Mayer Faculty Fellow of Nautical Archaeology Board of Directors & Officers Kevin J. Crisman, Ph.D. † Dr. Oğuz Aydemir • Robert D. Ballard, Ph.D. • Edward O. Boshell, Jr. • John Cassils, M.D. Associate Professor, Nautical Gregory M. Cook • Lucy Darden* • Thomas F. Darden • John De Lapa • Carl Douglas Archaeology Faculty Fellow Claude Duthuit* • Danielle J. Feeney* • Charles P. Garrison, M.D., Chairman* • Donald Geddes III, Past Chairman • James Goold, Secretary & General Counsel* • Dr. Robert Donny L. Hamilton, Ph.D. Hohlfelder, Ph.D. • Charles Johnson, Ph.D. • Gregory M. Kiez • Mustafa Koç • Captain George T. & Gladys H. Abell Chair Alfred Scott McLaren, USN (Ret.) Ph.D. • Alex G. Nason • George E. Robb, Jr. • Andrew in Nautical Archaeology, Yamini Family Chair in Liberal Arts Sansom* • Ayhan Sicimoğlu • Clyde P. Smith, Treasurer* • Jason Sturgis • Peter van Alfen, Ph.D. • Frederick van Doorninck, Jr., Ph.D.* • Robert L. Walker, Ph.D.* • Lew Ward • Peter Cemal Pulak, Ph.D. M. Way * • Robyn Woodward, Ph.D. • Sally M. Yamini Frederick R. Mayer Faculty Professor of Nautical Archaeology Associate Directors Ercan Acikel • Gordon W. -
Trireme Warfare in Herodotus Nicolle E
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Trinity University Trinity University Digital Commons @ Trinity Classical Studies Faculty Research Classical Studies Department 2007 Appendix S: Trireme Warfare in Herodotus Nicolle E. Hirschfeld Trinity University, [email protected] Follow this and additional works at: https://digitalcommons.trinity.edu/class_faculty Part of the Classics Commons Repository Citation Hirschfeld, N. (2007). Appendix S: Trireme warfare in Herodotus. In R. B. Strassler (Ed.), The Landmark Herodotus: The Histories (pp. 824-834). New York, NY: Pantheon Books. This Contribution to Book is brought to you for free and open access by the Classical Studies Department at Digital Commons @ Trinity. It has been accepted for inclusion in Classical Studies Faculty Research by an authorized administrator of Digital Commons @ Trinity. For more information, please contact [email protected]. APPENDIX S Trireme Warfare in Herodotus §1. Herodotus describes a vigorous era in the history of the maritime traffic and warfare in the Mediterranean. Greek• and Phoenician colonies anchored far-flung trading networks north to the Black Sea and west along the Mrican and European coasts to Spain and even beyond the Straits of Gibraltar. b Sea lanes had to be policed, colonies protected, parochial navies developed and increased. Furthermore, naval strength, always a prerogative of coastal and island states, became an important factor in the expanding domains of inland powers such as Sparta' and Persia. The jostling of all these escalating commercial and political interests in the seas of the Mediterranean fostered developments in ship design, construction, and handling. -
The New Answers Book 3
First printing: February 2010 Copyright © 2009 by Answers in Genesis. All rights reserved. No part of this book may be used or reproduced in any manner whatsoever without written permission of the publisher, except in the case of brief quotations in articles and reviews. For information write: Master Books®, P.O. Box 726, Green Forest, AR 72638 ISBN-13: 978-0-89051-579-2 ISBN-10: 0-89051-579-4 Library of Congress Number: 2008903202 Unless otherwise noted, all Scripture is from the New King James Version of the Bible. Printed in the United States of America Please visit our website for other great titles: www.masterbooks.net For information regarding author interviews, please contact the publicity department at (870) 438-5288. ® ACKNOWLEDGMENTS AND SPECIAL THANKS Acknowledgments and special thanks for reviewing or editing chapters: Steve Fazekas (theology, AiG), Frost Smith (biology, editor, AiG), Mike Matthews (editor, AiG), Gary Vaterlaus (science education, editor, AiG), Tim Chaffey (theology, Midwest Apologetics), Dr. John Whitcomb (theology, presi- dent of Whitcomb Ministries), Dr. Larry Vardiman (atmospheric science, chair- man of the department of astro-geophysics at the Institute for Creation Research), Ken Ham (biology, president and CEO of Answers in Genesis), Donna O’Daniel (biology, AiG), Dr. Tim Clarey (geology), Christine Fidler (CEO of Image in the UK), Mark Looy (editor, AiG), Dr. Terry Mortenson (history of geology, AiG), John Upchurch (editor, AiG), Dr. Jason Lisle (astrophysics, AiG), Dr. John Morris (geological engineering, president of the Institute for Creation Research), Dr. Andrew Snelling (geology, director of research at AiG), Dr. David Menton (retired, cell biology, former associate professor of anatomy at Washington Uni- versity School of Medicine, now AiG), Dr. -
Archived Content Information Archivée Dans Le
Archived Content Information identified as archived on the Web is for reference, research or record-keeping purposes. It has not been altered or updated after the date of archiving. Web pages that are archived on the Web are not subject to the Government of Canada Web Standards. As per the Communications Policy of the Government of Canada, you can request alternate formats on the "Contact Us" page. Information archivée dans le Web Information archivée dans le Web à des fins de consultation, de recherche ou de tenue de documents. Cette dernière n’a aucunement été modifiée ni mise à jour depuis sa date de mise en archive. Les pages archivées dans le Web ne sont pas assujetties aux normes qui s’appliquent aux sites Web du gouvernement du Canada. Conformément à la Politique de communication du gouvernement du Canada, vous pouvez demander de recevoir cette information dans tout autre format de rechange à la page « Contactez-nous ». CANADIAN FORCES COLLEGE / COLLÈGE DES FORCES CANADIENNES CSC 28 / CCEM 28 MASTER OF DEFENCE STUDIES (MDS) THESIS THE CORVETTE - A SHIP FOR THE 21ST CENTURY CANADIAN NAVY LA CORVETTE - UN NAVIRE POUR LA MARINE CANADIENNE DU 21E SIÈCLE By/par LCdr/capc Pierre Bédard This paper was written by a student attending La présente étude a été rédigée par un stagiaire the Canadian Forces College in fulfilment of one du Collège des Forces canadiennes pour of the requirements of the Course of Studies. satisfaire à l'une des exigences du cours. The paper is a scholastic document, and thus L'étude est un document qui se rapporte au contains facts and opinions, which the author cours et contient donc des faits et des opinions alone considered appropriate and correct for que seul l'auteur considère appropriés et the subject. -
Appendix A. Navy Activity Descriptions
Atlantic Fleet Training and Testing Draft EIS/OEIS June 2017 APPENDIX A Navy Activity Descriptions Appendix A Navy Activity Descriptions Atlantic Fleet Training and Testing Draft EIS/OEIS June 2017 This page intentionally left blank. Appendix A Navy Activity Descriptions Atlantic Fleet Training and Testing Draft EIS/OEIS June 2017 Draft Environmental Impact Statement/Overseas Environmental Impact Statement Atlantic Fleet Training and Testing TABLE OF CONTENTS A. NAVY ACTIVITY DESCRIPTIONS ................................................................................................ A-1 A.1 Description of Sonar, Munitions, Targets, and Other Systems Employed in Atlantic Fleet Training and Testing Events .................................................................. A-1 A.1.1 Sonar Systems and Other Acoustic Sources ......................................................... A-1 A.1.2 Munitions .............................................................................................................. A-7 A.1.3 Targets ................................................................................................................ A-11 A.1.4 Defensive Countermeasures ............................................................................... A-13 A.1.5 Mine Warfare Systems ........................................................................................ A-13 A.1.6 Military Expended Materials ............................................................................... A-16 A.2 Training Activities .................................................................................................. -
SP's Naval Force June-July 2010
June-July l 2010 Volume 5 No 3 rs 100.00 (india-based buyer only) SP’s AN SP GUIDE PUBLICATION www.spsnavalforces.net ROUNDUP 3 PAGe STOP PRESS A Global Concern NAvAL vARIANT OF LCA ROLLS OUT India, in cooperation with its allies and friends The country’s first naval variant of Light Combat Aircraft, the LCA (Navy) Trainer around the world, will have to work to ensure Naval Project (NP)–1 was rolled out by the Defence Minister A.K. Antony from HAL that lawful private and public activities in the Aircraft Research and Design Centre at a glittering function in Bengaluru on July 6, maritime domain are protected against attack 2010. The Chief of Naval Staff Admiral Nirmal Verma, Secretary Defence Production by hostile exploitations R.K. Singh, Scientific Adviser to the Defence Minister, Dr. V.K. Saraswat, HAL Chair - man Ashok Nayak, Director Aeronautical Development Agency P.S. Subramanyam Cdr Sandeep Dewan were present on the occasion. The Defence Minister described the development as a ‘defining and memorable event’ for the nation. PAGe 4 Around the Sea A report on Commander Dilip Donde’s TeTe-e-TeTe successful completion of the first solo circumnavigation by an Indian Rear Admiral (Retd) Sushil Ramsay ‘Cooperation and interaction in the PAGe 6 Stealthy Ships maritime domain will continue to be an important aspect of IN’s vision’ PhotograPh: abhishek / sP guide Pubns Chief of Naval Staff Admi - ral Nirmal Verma , in an interaction with SP’s Naval The scope of accessing technologies from Forces , throws light on the the western world, so far denied to India, is security measures to deal witnessing an upward swing with the growing incidents Rear Admiral (Retd) Sushil Ramsay of piracy. -
The Future of Sea Mines in the Indo-Pacific
Issue 18, 2020 BREACHING THE SURFACE: THE FUTURE OF SEA MINES IN THE INDO-PACIFIC Alia Huberman, The Australian National Internships Program Issue 18, 2020 EXECUTIVE SUMMARY This report argues that several dynamics of the coming few decades in the Indo-Pacific will see naval mines used once again in the region. It suggests they will form the basis of anti-access strategies for some Indo-Pacific states in a way that will be deeply transformative for the region’s strategic balance and for which Australia is thoroughly unprepared. It seeks to draw attention to the often- underappreciated nature of sea mines as a uniquely powerful strategic tool, offering the user an unparalleled asymmetric ability to engage high-value enemy targets while posing a minimal-risk, low- expense, and continuous threat. In the increasingly contested strategic environment of the contemporary Indo-Pacific - a region in which the threats to free navigation and the maritime economy are existential ones - there is considerable appetite for anti-access and sea denial weapons as defensive, offensive, and coercive tools. Naval strategists must,, prepare for the resurgence of mine warfare in the Indo-Pacific, and for the grand-scale and rapid timeline in which it can transform an operational environment. This report first seeks to collate and outline those characteristics of sea mines and of their interaction with an operational environment that make them attractive for use. It then discusses the states most likely to employ mine warfare and the different scenarios in which they might do so, presenting five individual contingencies: China, Taiwan, North Korea, non-state actors, and Southeast Asian states. -
US Navy Mine Warfare Champion
Naval War College Review Volume 68 Article 8 Number 2 Spring 2015 Wanted: U.S. Navy Mine Warfare Champion Scott .C Truver Follow this and additional works at: https://digital-commons.usnwc.edu/nwc-review Recommended Citation Truver, Scott .C (2015) "Wanted: U.S. Navy Mine Warfare Champion," Naval War College Review: Vol. 68 : No. 2 , Article 8. Available at: https://digital-commons.usnwc.edu/nwc-review/vol68/iss2/8 This Additional Writing is brought to you for free and open access by the Journals at U.S. Naval War College Digital Commons. It has been accepted for inclusion in Naval War College Review by an authorized editor of U.S. Naval War College Digital Commons. For more information, please contact [email protected]. Truver: Wanted: U.S. Navy Mine Warfare Champion COMMENTARY WANTED U.S. NAVY MINE WARFARE CHAMPION Scott C. Truver Successfully implementing innovation within a bureaucracy ultimately requires a champion to navigate the inherently political processes of securing sponsorship and resourcing. This is just as important to the very small as to the very large programs, particularly during periods of fiscal austerity. “It’s fragmented,” com- mented retired rear admiral Paul Ryan, former commander of the U.S. Navy’s Mine Warfare Command, in April 2014. “There is no single champion for mine warfare.”1 This lack of support presents challenges for the U.S. Navy and the nation, as the service struggles to articulate, and to muster the necessary backing for, mine warfare (MIW) strategies, programs, capabilities, and capacities. The task of confronting these challenges is complicated by the fact that MIW comprises not only mine-countermeasures (MCM—that is, minesweeping and mine hunt- ing) systems and platforms but also mines that can be employed to defeat our adversaries’ naval strategies and forces. -
Revitalizing Mine Countermeasure: Lessons from the Royal Navy In
NAVAL MINE WARFARE ESSAY CONTEST—1ST PRIZE Sponsored by The Mine Warfare Association BY LIEUTENANT JOHN MILLER, REVITALIZE MINE U.S. NAVY COUNTERMEASURES The Royal Navy’s experience responding to mines in World War II offers lessons for today. RAYTHEON 48 PROCEEDINGS | AUGUST 2019 he U.S. Navy knows that its current adversaries pose a substantial offensive mining threat. Russia, China, and Iran each possess—and too often export—an advanced, ro- bust, and mature offensive mine capability. The U.S. Navy must consider if it has the T speed and resources with which to respond to restore freedom of maneuver in the event of sustained mining. The pre–World War II U.S. Navy had neither built a minesweeper nor swept a mine in its his- tory. It had zero minesweepers on the register of active ships in September 1939.1 In compar- ison, the Royal Navy had 76 fleet minesweepers.2 By the end of the war, more than 1,000 U.S. and Allied vessels had served as minesweepers, combating offensive mine operations from the Atlantic and the Mediterranean to the Far East. While some were purpose-built, many were commercial vessels, such as trawlers and drifters, pressed into service by the Royal Navy to support mine countermeasure (MCM), antisubmarine warfare (ASW), escort, and patrol mis- sions. Though lightly armed, these vessels played a vital role in combating and defeating ad- versaries across multiple warfare domains. By filling a critical capability gap, these ships and boats enabled the Royal Navy to effectively stretch its finite naval forces across the globe. -
ASME National Historical Mechanical Engineering Landmark Program 1975
Form No. 10-300 (Rev. 10-74) UNITED STATES DEPARTMENT OF THE INTERIOR NATIONAL PARK SERVICE NATIONAL REGISTER OF HISTORIC PLACES INVENTORY -- NOMINATION FORM SEE INSTRUCTIONS IN HOW TO COMPLETE NATIONAL REGISTER FORMS TYPE ALL ENTRIES -- COMPLETE APPLICABLE SECTIONS NAME HISTORIC U.S.S. Texas AND/OR COMM Battleship Texas LOCATION -T& NUMBER San Jacinto Battleground State Park STREETea. &NUr "2? mi. east of Houston on Tex. 13* _NOTFORPUBL1CAT10N CITY, TOWN CONGRESSIONAL DISTRICT VICINITY OF Houston STATE CODE COUNTY CODE Texas Harris 201 CLASSIFICATION CATEGORY OWNERSHIP STATUS PRESENT USE _DISTRICT —XPUBLIC .XOCCUPIED _AGRICULTURE X_MUSEUM _BUILDING(S) —PRIVATE —UNOCCUPIED —COMMERCIAL _ PARK' —STRUCTURE . —BOTH —WORK IN PROGRESS .XEDUCATIONAL —PRIVATE RESIDENCE —SITE PUBLIC ACQUISITION ACCESSIBLE —ENTERTAINMENT —RELIGIOUS ^•.OBJECT _IN PROCESS .XYES: RESTRICTED —GOVERNMENT -^SCIENTIFIC —BEING CONSIDERED — YES: UNRESTRICTED —INDUSTRIAL —TRANSPORTATION —NO —MILITARY —OTHER: OWNER OF PROPERTY Contact: C.H. Taylor, Chairman NAME State of Texas, The Battleship Texas Commission STREET & NUMBER EXXON Building; Suite 2695 CITY, TOWN STATE Houston VICINITY OF Texas LOCATION OF LEGAL DESCRIPTION COURTHOUSE, REGISTRY OF DEEDS,ETC. The Battleship Texas Commission STREET & NUMBER EXXON Building. Suite 26QR CITY, TOWN STATE Houston Texas REPRESENTATION IN EXISTING SURVEYS TITLE ASME National Historical Mechanical Engineering Landmark Program DATE 1975 —FEDERAL —STATE —COUNTY —LOCAL DEPOSITORY FOR SURVEY RECORDS ASME United Engineering Center CITY. TOWN New York DESCRIPTION CONDITION CHECK ONE CHECK ONE —EXCELLENT —DETERIORATED —UNALTERED —ORIGINAL SITE X_GOOD —RUINS X_ALTERED X_MOVED DATE 1948 —FAIR — UNEXPOSED DESCRIBE THE PRESENT AND ORIGINAL (IF KNOWN) PHYSICAL APPEARANCE Newport News Shipbuilding and Dry Dock Company built Texas (BB35) in 1911-14. Upon her completion she measured 573 feet long, was 94 3/4 feet wide at the beam, had a normal displacement of 27,000 tons and a mean draft of 28 1/2 feet, and boasted a top speed of 21 knots.