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Author:
Publisher:
ISBN:
Category : Cables, Submarine
Languages : en
Pages : 456
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Book Description
This handbook deals with the protection of that portion of an ocean cable system which passes through the nearshore zone. This zone is defined as an indefinite area that extends seaward from the shoreline to well beyond the breaker zone. For the purpose of this work, the outer limit of this zone has been established as the distance from shore at which the water depth is great enough that the hydrodynamic effects of storm waves no longer represent a potential danger to the bottom-resting cable. Although this gives a rationale for establishing the nearshore zone, the extent of this region depends on specific site conditions. It could extend offshore to a water depth of at least 100 feet or as much as 600 feet (Valent and Brackett, 1976). The information presented in this handbook is directed primarily toward future cable installations; however, many of the protection systems and most of the design theory can easily be adapted for use in repair of existing installations.
Author:
Publisher:
ISBN:
Category : Cables, Submarine
Languages : en
Pages : 456
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Book Description
This handbook deals with the protection of that portion of an ocean cable system which passes through the nearshore zone. This zone is defined as an indefinite area that extends seaward from the shoreline to well beyond the breaker zone. For the purpose of this work, the outer limit of this zone has been established as the distance from shore at which the water depth is great enough that the hydrodynamic effects of storm waves no longer represent a potential danger to the bottom-resting cable. Although this gives a rationale for establishing the nearshore zone, the extent of this region depends on specific site conditions. It could extend offshore to a water depth of at least 100 feet or as much as 600 feet (Valent and Brackett, 1976). The information presented in this handbook is directed primarily toward future cable installations; however, many of the protection systems and most of the design theory can easily be adapted for use in repair of existing installations.
Author: L. Carter
Publisher: UNEP/Earthprint
ISBN: 9780956338723
Category : Political Science
Languages : en
Pages : 68
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Book Description
There are many things and services in our everyday life that we take for granted, and telecommunications is one of them. We surf the internet, send emails to friends and colleagues abroad, talk to family members in foreign countries over the phone, book airline seats and make banking transactions without actually realizing and appreciating the sophisticated technology that enables us to do so. This report covers the history and nature of cables, their special status in international law, their interaction with the environment and other ocean users and, finally, the challenges of the future. It is an evidence-based synopsis that aims to improve the quality and availability of information to enhance understanding and cooperation between all stakeholders. UNEP-WCMC in collaboration with the International Cable Protection Committee and UNEP has prepared this new report to provide an objective, factual description of the sub-marine cable industry and the interaction of submarine telecommunications (which route 95% of all international communications traffic) with the marine environment. This important report seeks to focus and guide deliberations and decision making on the wise conservation and protection of the oceans in concert with their sustainable management and use.
Author:
Publisher:
ISBN:
Category : Marine resources
Languages : en
Pages : 834
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Book Description
Author: J. M. Dummer
Publisher:
ISBN:
Category : Hydrodynamics..
Languages : en
Pages : 144
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Book Description
This technology development plan reviews the role of the Naval Facilities Engineering Command (NAVFAC) in developing technology for the design of ocean structures subject to wave-induced hydrodynamic loading. Navy design requirements for ocean facilities and the technological deficiencies requiring further development to make these designs both reliable and economical are discussed. Specifically, the topic of wave force prediction technology is reviewed, and a summary of previous and current NAVFAC and Naval Civil Engineering Laboratory wave forces research is provided. A plan is outlined describing the development process necessary to achieve a comprehensive set of design guidelines for both rigid and compliant structures. Major subjects identified for inclusion in the proposed design guidelines include Morison equation force coefficient selection, Morison equation deterministic static analysis, Morison equation random dynamic analysis, diffraction theory analysis, combined large and small body loading anlaysis for Navy ocean structures. A discussion of each of the topics pertinent to these major items is provided.
Author:
Publisher:
ISBN:
Category : Deep diving
Languages : en
Pages : 532
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Book Description
Author:
Publisher: DIANE Publishing
ISBN: 0788182609
Category :
Languages : en
Pages : 530
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Book Description
Presents comprehensive information on air diving operations. It contains data and information from all groups within the Navy diving community, and reflects state-of-the-art diving capabilities of the U.S. Navy. New equipments appearing for the first time include the Underwater Breathing Apparatus (UBA) MK 20 MOD 0, UBA MK 21 MOD 1, the Light Weight Diving System (LWDS) MK 3 MOD 0, and the Transportable Recompression Chamber System (TRCS). Appendices: changes in the deployment of standby divers in ships husbandry diving, changes in treatment tables and new correction factors and guidance relating to the use of pneumofathometers.
Author:
Publisher:
ISBN:
Category : Coastal engineering
Languages : en
Pages : 468
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Book Description
Author: R. D. Rail
Publisher:
ISBN:
Category : Precast concrete construction
Languages : en
Pages : 100
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Book Description
Author: Thomas Worzyk
Publisher: Springer Science & Business Media
ISBN: 3642012701
Category : Technology & Engineering
Languages : en
Pages : 306
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Book Description
The demand for high-performance submarine power cables is increasing as more and more offshore wind parks are installed, and the national electric grids are interconnected. Submarine power cables are installed for the highest voltages and power to transport electric energy under the sea between islands, countries and even continents. The installation and operation of submarine power cables is much different from land cables. Still, in most textbooks on electrical power systems, information on submarine cables is scarce. This book is closing the gap. Different species of submarine power cables and their application are explained. Students and electric engineers learn on the electric and mechanic properties of submarine cables. Project developers and utility managers will gain useful information on the necessary marine activities such as pre-laying survey, cable lay vessels, guard boats etc., for the submarine cable installation and repair. Investors and decision makers will find an overview on environmental aspects of submarine power cables. A comprehensive reference list is given for those who want further reading.
Author:
Publisher:
ISBN:
Category : Civil engineering
Languages : en
Pages : 200
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Book Description
